{"id":19675,"date":"2026-06-26T06:47:42","date_gmt":"2026-06-26T06:47:42","guid":{"rendered":"https:\/\/www.fibermall.com\/blog\/?p=19675"},"modified":"2026-08-17T09:21:43","modified_gmt":"2026-08-17T09:21:43","slug":"800g-ndr-infiniband-deployment-guide-quantum-2-connectx-7","status":"publish","type":"post","link":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm","title":{"rendered":"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#What_Is_800G_NDR_InfiniBand\" >What Is 800G NDR InfiniBand?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Hardware_Requirements_for_NDR_Deployment\" >Hardware Requirements for NDR Deployment<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Quantum-2_Switches\" >Quantum-2 Switches<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#ConnectX-7_and_BlueField-3\" >ConnectX-7 and BlueField-3<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Understanding_Twin-Port_OSFP_and_Heatsink_Types\" >Understanding Twin-Port OSFP and Heatsink Types<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#IHS_vs_RHS\" >IHS vs RHS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Cabling_and_Structured_Fiber_Requirements\" >Cabling and Structured Fiber Requirements<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#DAC_AOC_and_Optical_Breakdown\" >DAC, AOC, and Optical Breakdown<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#APC_vs_UPC_The_Silent_Killer\" >APC vs UPC: The Silent Killer<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Topology_and_Connection_Scenarios\" >Topology and Connection Scenarios<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Common_Connection_Scenarios\" >Common Connection Scenarios<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Deployment_Workflow\" >Deployment Workflow<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Subnet_Manager_Setup_for_NDR\" >Subnet Manager Setup for NDR<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Verification_and_Burn-In_Protocol\" >Verification and Burn-In Protocol<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Key_Verification_Steps\" >Key Verification Steps<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#HDR-to-NDR_Migration_Strategies\" >HDR-to-NDR Migration Strategies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Cost_and_Procurement_Considerations\" >Cost and Procurement Considerations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#FAQ\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#What_is_the_difference_between_NDR_and_XDR\" >What is the difference between NDR and XDR?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#How_many_ports_does_Quantum-2_have\" >How many ports does Quantum-2 have?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Can_I_use_QSFP112_cables_with_Quantum-2\" >Can I use QSFP112 cables with Quantum-2?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#What_fiber_do_I_need_for_NDR_400G\" >What fiber do I need for NDR 400G?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#How_much_power_does_a_Quantum-2_switch_draw\" >How much power does a Quantum-2 switch draw?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Can_I_mix_ConnectX-7_and_ConnectX-8_in_one_fabric\" >Can I mix ConnectX-7 and ConnectX-8 in one fabric?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Do_I_need_a_Subnet_Manager_for_every_switch\" >Do I need a Subnet Manager for every switch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Can_I_use_third-party_optics_in_Quantum-2\" >Can I use third-party optics in Quantum-2?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span><strong>Introduction<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Marcus&#8217;s team unboxed their first Quantum-2 switches on a Monday morning, confident the hard part was over. GPUs were racked, NICs installed, and the fiber crew was scheduled. By Tuesday afternoon, every cage on the switch was empty.<\/p>\n\n\n\n<p>The OSFP modules they had ordered were the wrong heatsink type. Flat-top modules can&#8217;t seat properly in finned-top cages, and no amount of force fixes that. A $30,000 cluster sat idle for four days while replacement optics raced through customs.<\/p>\n\n\n\n<p>That single procurement detail is why this guide exists. Deploying 800G NDR InfiniBand isn&#8217;t just about speed. It&#8217;s about matching form factors, polarity, power budgets, and firmware versions that all have to align before the first MPI job runs. Cabling alone can reach 15-25% of total cluster cost. Lead times of 4-12 weeks for optics mean a mistake won&#8217;t get fixed by next-day air.<\/p>\n\n\n\n<p>This article walks through the complete 800G NDR InfiniBand deployment workflow: hardware selection, twin-port OSFP nuances, structured fiber requirements, topology choices, Subnet Manager setup, verification, burn-in, and migration from HDR. If you&#8217;re new to InfiniBand, our<a href=\"https:\/\/www.fibermall.com\/blog\/what-is-infiniband-ai-networking.htm\" target=\"_blank\"><u>&nbsp;<\/u><u>complete InfiniBand guide<\/u><\/a>&nbsp;covers the architecture and generations first.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"446\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Introduction.png\" alt=\"Introduction\" class=\"wp-image-19676\" style=\"width:800px\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Introduction.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Introduction-300x167.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Introduction-768x428.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_800G_NDR_InfiniBand\"><\/span><strong>What Is 800G NDR InfiniBand?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NDR stands for Next Data Rate, the InfiniBand generation that delivers 400 Gbps per port. The term &#8220;800G NDR InfiniBand&#8221; describes a twin-port OSFP module carrying two independent 400G NDR links in a single transceiver. It isn&#8217;t a new InfiniBand generation. It&#8217;s two NDR ports packaged together.<\/p>\n\n\n\n<p>This distinction matters because search results and procurement sheets often blur the line. NDR = 400G per port. XDR, the next generation, is 800G per port and arrives with ConnectX-8. A ConnectX-7 NIC supports NDR 400G, not 800G XDR.<\/p>\n\n\n\n<p>NVIDIA&#8217;s Quantum-2 switch illustrates this clearly. It has 32 OSFP cages on the front panel, but each cage hosts two NDR 400G ports. That gives the switch 64 NDR 400G ports and 51.2 Tb\/s of aggregate switching capacity. When you insert a twin-port 800G NDR OSFP module, it consumes one cage and presents two 400G links. Understanding that relationship prevents the most common ordering error we see in 800G NDR InfiniBand deployments.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hardware_Requirements_for_NDR_Deployment\"><\/span><strong>Hardware Requirements for NDR Deployment<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A working NDR fabric needs three components to agree on speed, form factor, and airflow: the switch, the NIC, and the server it lives in. Getting any one of these wrong turns an <a href=\"https:\/\/www.fibermall.com\/store-21994-800g-ndr-infiniband.htm\" target=\"_blank\" rel=\"noreferrer noopener\">800G NDR InfiniBand<\/a> deployment into an expensive troubleshooting exercise.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quantum-2_Switches\"><\/span><strong>Quantum-2 Switches<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>NVIDIA ships two main Quantum-2 variants:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Model<\/strong><\/td><td><strong>Management<\/strong><\/td><td><strong>Airflow<\/strong><\/td><td><strong>Use Case<\/strong><\/td><\/tr><tr><td>QM9700<\/td><td>Non-managed<\/td><td>P2C or C2P<\/td><td>Spine\/leaf where external management is preferred<\/td><\/tr><tr><td>QM9790<\/td><td>Managed<\/td><td>P2C or C2P<\/td><td>Edge deployments needing on-switch management<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Airflow direction isn&#8217;t optional. P2C (port-to-cooler) pulls air in through the front panel and exhausts at the rear. C2P reverses that. Mixing directions in the same rack creates hot spots that can trigger thermal throttling.<\/p>\n\n\n\n<p>A fully populated Quantum-2 switch draws 1,300-1,550W, so rack power planning starts at 50+ kW for dense leaf deployments.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"800\" height=\"446\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Quantum-2-Switches.png\" alt=\"Quantum-2 Switches\" class=\"wp-image-19677\" style=\"width:800px\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Quantum-2-Switches.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Quantum-2-Switches-300x167.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Quantum-2-Switches-768x428.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ConnectX-7_and_BlueField-3\"><\/span><strong>ConnectX-7 and BlueField-3<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>ConnectX-7 NICs support NDR 400G in OSFP or QSFP112 form factors. The OSFP version uses a riding heat sink (RHS, flat-top) and is designed for servers. QSFP112 variants exist for environments where backward compatibility matters, but they still deliver NDR signaling, not a slower generation. BlueField-3 DPUs add compute offload and can run NDR links, though most AI clusters still connect hosts through ConnectX-7.<\/p>\n\n\n\n<p>Server PCIe slot bandwidth is another common bottleneck. NDR 400G needs PCIe Gen5 x16 to reach full throughput. Dropping to Gen4 x16 cuts usable bandwidth roughly in half. That defeats the purpose of the fabric upgrade.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe title=\"NVIDIA Quantum-2 Infiniband Switch Explained: 64\u00d7400G NDR Ports from 32 OSFP Cages | FiberMall\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/s3VjRW_yYJE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Understanding_Twin-Port_OSFP_and_Heatsink_Types\"><\/span><strong>Understanding Twin-Port OSFP and Heatsink Types<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Twin-port OSFP modules are the physical heart of 800G NDR connectivity. They contain two independent 400G engines, each with its own transmitter and receiver lanes, sharing a common electrical interface and housing. One module plugs into one cage on a Quantum-2 switch. Two NDR ports come alive.<\/p>\n\n\n\n<p>The heatsink type determines whether that module will even fit. Pick wrong, and your 800G NDR InfiniBand rollout stops at the loading dock.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"IHS_vs_RHS\"><\/span><strong>IHS vs RHS<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>IHS (Integrated Heat Sink)<\/strong>: Finned-top, taller heatsink. Required for Quantum-2 switches because the cage provides the mating surface and airflow path.<\/p>\n\n\n\n<p><strong>RHS (Riding Heat Sink)<\/strong>: Flat-top, lower profile. Required for ConnectX-7 NICs and BlueField-3 DPUs where server spacing is tight.<\/p>\n\n\n\n<p>These are physically incompatible. A flat-top module won&#8217;t seat correctly in a finned-top cage, and forcing it risks damaging the connector. Marcus&#8217;s team learned this the hard way.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Platform<\/strong><\/td><td><strong>Heatsink Type<\/strong><\/td><td><strong>Visual Cue<\/strong><\/td><\/tr><tr><td>Quantum-2 switch<\/td><td>IHS<\/td><td>Finned-top, taller<\/td><\/tr><tr><td>ConnectX-7 NIC<\/td><td>RHS<\/td><td>Flat-top, lower<\/td><\/tr><tr><td>BlueField-3 DPU<\/td><td>RHS<\/td><td>Flat-top, lower<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>When ordering, confirm the part number suffix and request a physical sample if the supplier is new. For switch-side optics, FiberMall&#8217;s 800G NDR InfiniBand modules&nbsp;ship with the correct IHS profile for Quantum-2 cages.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/IHS-vs-RHS.png\" alt=\"IHS vs RHS\" class=\"wp-image-19678\" style=\"width:800px\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/IHS-vs-RHS.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/IHS-vs-RHS-300x169.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/IHS-vs-RHS-768x432.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cabling_and_Structured_Fiber_Requirements\"><\/span><strong>Cabling and Structured Fiber Requirements<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NDR links have three cable options: direct attach copper (DAC\/ACC), active optical cable (AOC), and optical transceivers plus structured fiber. The right choice depends on reach, bend radius, and whether the cable needs to move. Most 800G NDR InfiniBand deployments use a mix of all three.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DAC_AOC_and_Optical_Breakdown\"><\/span><strong>DAC, AOC, and Optical Breakdown<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Cable Type<\/strong><\/td><td><strong>Typical Reach<\/strong><\/td><td><strong>Best For<\/strong><\/td><\/tr><tr><td>DAC\/ACC<\/td><td>Up to 3m<\/td><td>Top-of-rack, fixed connections<\/td><\/tr><tr><td>AOC<\/td><td>3-30m<\/td><td>Inter-rack within the same row<\/td><\/tr><tr><td>Optical + fiber<\/td><td>50m MMF \/ 500m SMF<\/td><td>Structured cabling, long spans<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>AOC is popular in AI clusters because it&#8217;s lighter and more flexible than DAC at 400G. But structured fiber becomes necessary once runs exceed about 30 meters or cross rows. NVIDIA&#8217;s structured cabling requirements specify MPO-12 APC connectors, Method B polarity, and single-mode fiber for spans beyond 100 meters.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"APC_vs_UPC_The_Silent_Killer\"><\/span><strong>APC vs UPC: The Silent Killer<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>APC (Angled Physical Contact) polish is mandatory for NDR optical links. The 8-degree angle reduces back-reflection, which becomes critical at PAM4 signaling rates. UPC (Ultra Physical Contact) connectors, common in older HDR and Ethernet deployments, cause high back-reflection that degrades signal integrity.<\/p>\n\n\n\n<p>One deployment team reused legacy UPC fiber from their HDR cluster. Links came up, then flapped under load, then failed during All-Reduce operations. A fiber scope revealed the polish mismatch. Swapping to APC restored stability.<\/p>\n\n\n\n<p>The lesson: don&#8217;t trust color-coded sleeves alone. Verify polish, polarity, and gender before racking.<\/p>\n\n\n\n<p>For a deeper dive, see our InfiniBand cables guide.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"446\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Cabling-and-Structured-Fiber-Requirements.png\" alt=\"Cabling and Structured Fiber Requirements\" class=\"wp-image-19679\" style=\"width:800px\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Cabling-and-Structured-Fiber-Requirements.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Cabling-and-Structured-Fiber-Requirements-300x167.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Cabling-and-Structured-Fiber-Requirements-768x428.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Topology_and_Connection_Scenarios\"><\/span><strong>Topology and Connection Scenarios<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>NDR fabrics usually follow one of three patterns: fat-tree spine-leaf, Dragonfly+ for very large systems, or a DGX SuperPOD reference architecture for NVIDIA-aligned AI clusters.<\/p>\n\n\n\n<p>Fat-tree remains the default for most 800G NDR InfiniBand fabrics. Leaf switches sit at the top of each rack and uplink to spine switches in a non-blocking or lightly oversubscribed pattern. A common 2:1 oversubscription ratio balances cost against performance for training workloads.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Connection_Scenarios\"><\/span><strong>Common Connection Scenarios<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Scenario<\/strong><\/td><td><strong>Module\/Cable<\/strong><\/td><td><strong>Notes<\/strong><\/td><\/tr><tr><td>Switch-to-switch<\/td><td>Twin-port 800G OSFP<\/td><td>One cage, two 400G links between spines and leaves<\/td><\/tr><tr><td>Switch-to-2-NICs<\/td><td>Twin-port 800G OSFP to 2\u00d7 single-port 400G<\/td><td>Common rack-facing downlink<\/td><\/tr><tr><td>800G to 4\u00d7200G<\/td><td>Breakout AOC or optical<\/td><td>Connects NDR spine to HDR leaf during migration<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Connection scenarios are often scattered across vendor PDFs. The key is to map every port to a physical lane count. A twin-port 800G module does not magically create four 200G links. Breakout requires the correct cable and matching port configuration on both ends.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"446\" src=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Topology-and-Connection-Scenarios.png\" alt=\"Topology and Connection Scenarios\" class=\"wp-image-19680\" style=\"width:800px\" srcset=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Topology-and-Connection-Scenarios.png 800w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Topology-and-Connection-Scenarios-300x167.png 300w, https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/Topology-and-Connection-Scenarios-768x428.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Deployment_Workflow\"><\/span><strong>Deployment Workflow<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A complete 800G NDR InfiniBand deployment follows eight stages. Skip any of them and you increase the chance of a silent failure later.<\/p>\n\n\n\n<p>1. <strong>Pre-deployment assessment.<\/strong>&nbsp;Document server PCIe topologies, NIC part numbers, switch airflow directions, and fiber inventory. Run nvidia-smi topo -m&nbsp;to confirm GPU-NIC affinity.<\/p>\n\n\n\n<p>2. <strong>Rack power and thermal validation.<\/strong>&nbsp;Confirm 50+ kW per rack capacity, cold-aisle temperatures, and that switch airflow matches cabinet design. Thermal throttling looks like a software problem but starts in the rack.<\/p>\n\n\n\n<p>3. <strong>Hardware installation.<\/strong>&nbsp;Rack switches, install NICs, leave optics out until fiber is clean and verified. Follow NVIDIA&#8217;s QM9700\/QM9790 quick install guide&nbsp;for rail kit and grounding details.<\/p>\n\n\n\n<p>4. <strong>Subnet Manager deployment.<\/strong>&nbsp;Choose integrated SM on Quantum-2 for fabrics up to 2,000 nodes, or external OpenSM\/UFM for larger deployments. Configure redundancy before any host joins.<\/p>\n\n\n\n<p>5. <strong>Cable installation and inspection.<\/strong>&nbsp;Clean every MPO endface, verify Method B polarity, confirm APC polish, and test insertion loss before plugging into cages.<\/p>\n\n\n\n<p>6. <strong>Link verification.<\/strong>&nbsp;Bring up links one row at a time. Check ibstat&nbsp;and ibstatus&nbsp;for physical state, then validate BER against thresholds.<\/p>\n\n\n\n<p>7. <strong>Fabric burn-in.<\/strong>&nbsp;Run ib_write_bw, ibdiagnet, and an MPI or NCCL benchmark for 24-72 hours. Monitor DOM readings and watch for link flaps.<\/p>\n\n\n\n<p>8. <strong>Production cutover.<\/strong>&nbsp;Migrate workloads only after burn-in passes and a rollback plan exists.<\/p>\n\n\n\n<p>Firmware compatibility is the detail most teams miss. BIOS, NIC firmware, OFED driver, and SM version must be validated together. A mismatch between any two can cause ports to negotiate at HDR instead of NDR, or fail to bring up RDMA queue pairs.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container \" style=\"height: 100%;\"><iframe title=\"800G OSFP DR8 InfiniBand Transceiver: Features &amp; Installation Guide | FiberMall\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/p5mCQLPUE8g?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Subnet_Manager_Setup_for_NDR\"><\/span><strong>Subnet Manager Setup for NDR<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The Subnet Manager (SM) is the control plane of an InfiniBand fabric. It discovers devices, assigns Local Identifiers (LIDs), computes routes, and manages virtual lanes for QoS. Without it, ports physically light but no traffic flows.<\/p>\n\n\n\n<p>Quantum-2 switches include an integrated SM capable of handling fabrics up to approximately 2,000 nodes. For smaller 800G NDR InfiniBand clusters, this removes the need for a separate management server. Larger fabrics need external SM software such as OpenSM or NVIDIA UFM, often deployed in a redundant pair.<\/p>\n\n\n\n<p>Best practices for SM setup:<\/p>\n\n\n\n<p>Run at least two SMs with priority levels so failover is automatic.<\/p>\n\n\n\n<p>Pin SM processes to dedicated cores or management servers to avoid CPU contention.<\/p>\n\n\n\n<p>Configure partition keys (PKeys) to isolate storage, compute, and management traffic.<\/p>\n\n\n\n<p>Enable adaptive routing and congestion control for AI workloads with many-to-one traffic patterns.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Verification_and_Burn-In_Protocol\"><\/span><strong>Verification and Burn-In Protocol<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Verification separates a working fabric from one that merely looks working. Networking failures in HPC environments rarely announce themselves with a clean outage. They show up as tail latency, gradient synchronization stalls, or MPI hangs that only appear under load. In an 800G NDR InfiniBand environment, these symptoms are expensive to debug.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Verification_Steps\"><\/span><strong>Key Verification Steps<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Check<\/strong><\/td><td><strong>Command\/Tool<\/strong><\/td><td><strong>Threshold<\/strong><\/td><\/tr><tr><td>Physical state<\/td><td>ibstat, ibstatus<\/td><td>LinkUp, NDR 400G<\/td><\/tr><tr><td>Pre-FEC BER<\/td><td>ibdiagnet<\/td><td>&lt;1\u00d710\u207b\u2076 acceptable, &gt;1\u00d710\u207b\u2075 unacceptable<\/td><\/tr><tr><td>Bandwidth<\/td><td>ib_write_bw<\/td><td>Within 5% of theoretical 400 Gbps<\/td><\/tr><tr><td>DOM readings<\/td><td>Switch\/NIC CLI<\/td><td>TX\/RX power and temperature within vendor range<\/td><\/tr><tr><td>Application benchmark<\/td><td>NCCL\/MPI test<\/td><td>No hangs, expected scaling efficiency<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Burn-in should last 24-72 hours before production cutover. During that window, monitor for link flaps, temperature spikes, and CRC errors. DOM (Digital Optical Monitoring) readings that drift outside vendor ranges are early warnings of dirty connectors, polarity errors, or marginal transceivers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HDR-to-NDR_Migration_Strategies\"><\/span><strong>HDR-to-NDR Migration Strategies<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Most organizations don&#8217;t build NDR fabrics from scratch. They migrate from HDR 200G or EDR 100G. Three strategies cover most situations.<\/p>\n\n\n\n<p><strong>Breakout approach<\/strong>: Keep legacy leaf switches and connect them to NDR spines using 800G to 4\u00d7200G breakout cables. This preserves existing server connectivity while upgrading core bandwidth. It&#8217;s the lowest-risk path and works well during budget-phased upgrades to 800G NDR InfiniBand.<\/p>\n\n\n\n<p><strong>End-to-end upgrade<\/strong>: Replace leaves, spines, NICs, and cabling in one window. This delivers full NDR performance immediately but requires more capital and a longer maintenance window.<\/p>\n\n\n\n<p><strong>Spine-first migration<\/strong>: Upgrade spine switches to NDR while leaves remain HDR. Servers stay untouched, and the core gains capacity. This is the strategy one research cluster used to spread costs across two fiscal years without re-architecting their topology.<\/p>\n\n\n\n<p>Speed downgrade modes let NDR ports negotiate at HDR or EDR when the far end requires it. That flexibility helps during mixed-generation cutovers. For HDR hardware details, our QSFP56 transceiver guide&nbsp;covers the 200G generation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost_and_Procurement_Considerations\"><\/span><strong>Cost and Procurement Considerations<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>InfiniBand networking carries a cost surprise for teams focused on GPU procurement. Cabling, transceivers, and related hardware can reach 15-25% of total cluster cost. A single Quantum-2 switch lists in the tens of thousands of dollars, and optics multiply quickly when every server needs redundant NIC connections.<\/p>\n\n\n\n<p>Lead times add pressure. During peak AI build-outs, InfiniBand optics and cables can slip to 4-12 weeks. Ordering optics for an 800G NDR InfiniBand rollout without confirming heatsink type, reach, and polarity extends those delays further.<\/p>\n\n\n\n<p>Third-party MSA-compatible modules reduce cost without sacrificing compatibility when sourced from a qualified supplier. The key is testing: verify part numbers, firmware versions, and physical fit before bulk ordering. FiberMall supplies 400G NDR InfiniBand transceivers&nbsp;and twin-port 800G modules tested for NVIDIA\/Mellanox environments, with factory-direct pricing and faster availability than many OEM channels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQ\"><\/span><strong>FAQ<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_NDR_and_XDR\"><\/span><strong>What is the difference between NDR and XDR?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>NDR is 400 Gbps per port. XDR is 800 Gbps per port, supported by ConnectX-8 and Quantum-X800 switches.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_many_ports_does_Quantum-2_have\"><\/span><strong>How many ports does Quantum-2 have?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Quantum-2 has 32 OSFP cages, which equals 64 NDR 400G ports when using twin-port modules.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_use_QSFP112_cables_with_Quantum-2\"><\/span><strong>Can I use QSFP112 cables with Quantum-2?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Quantum-2 uses OSFP cages. QSFP112 modules do not physically fit. Use OSFP modules or adapter cables specifically rated for OSFP-to-QSFP112 NDR connections.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_fiber_do_I_need_for_NDR_400G\"><\/span><strong>What fiber do I need for NDR 400G?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Use MPO-12 APC connectors with Method B polarity. For structured cabling, follow NVIDIA&#8217;s structured cabling requirements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_much_power_does_a_Quantum-2_switch_draw\"><\/span><strong>How much power does a Quantum-2 switch draw?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A fully populated Quantum-2 switch draws 1,300-1,550W depending on module count and airflow configuration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_mix_ConnectX-7_and_ConnectX-8_in_one_fabric\"><\/span><strong>Can I mix ConnectX-7 and ConnectX-8 in one fabric?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Yes at the InfiniBand protocol level, but they operate at different maximum speeds. Match port configurations and firmware compatibility matrices.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_I_need_a_Subnet_Manager_for_every_switch\"><\/span><strong>Do I need a Subnet Manager for every switch?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>No. One SM manages the entire subnet. Quantum-2 includes an integrated SM for up to 2,000 nodes; larger fabrics use external SM or UFM.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_I_use_third-party_optics_in_Quantum-2\"><\/span><strong>Can I use third-party optics in Quantum-2?<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Yes, if they are MSA-compatible and qualified for the target environment. Verify heatsink type, firmware compatibility, and BER performance before bulk deployment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><strong>Conclusion<\/strong><strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Deploying 800G NDR InfiniBand is a chain of small decisions, and the weakest link determines when the cluster actually runs. The right OSFP heatsink, the correct APC polish, validated firmware, and a thorough burn-in aren&#8217;t optional details. They&#8217;re what separate a cluster that trains models from one that spends a week debugging link flaps.<\/p>\n\n\n\n<p>If you&#8217;re planning an 800G NDR InfiniBand deployment, start with a hardware compatibility matrix and a cable qualification lab before the first switch ships. When you&#8217;re ready to source optics, explore FiberMall&#8217;s 800G NDR InfiniBand modules&nbsp;and InfiniBand cables. Our engineering team can help you match heatsink types, reach, and polarity to your Quantum-2 and ConnectX-7 rollout. Request a quote today and avoid the wrong-heatsink week.<\/p>\n\n\n\n<p><\/p>\n<style>\r\n\r\n        .lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }\r\n        .lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(100% - 20px);\r\n        }\r\n        .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n            \r\n            list-style: decimal;\r\n        }\r\n        .lwrp .lwrp-list-item img{\r\n            max-width: 100%;\r\n            height: auto;\r\n        }\r\n        .lwrp .lwrp-list-item.lwrp-empty-list-item{\r\n            background: initial !important;\r\n        }\r\n        .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n        .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n            \r\n                \r\n        }\r\n        @media screen and (max-width: 480px) {\r\n            .lwrp.link-whisper-related-posts{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-title{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-description{\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-multi-container{\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-multi-container ul.lwrp-list{\r\n                margin-top: 0px;\r\n                margin-bottom: 0px;\r\n                padding-top: 0px;\r\n                padding-bottom: 0px;\r\n            }\r\n            .lwrp .lwrp-list-double,\r\n            .lwrp .lwrp-list-triple{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-row-container{\r\n                justify-content: initial;\r\n                flex-direction: column;\r\n            }\r\n            .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n                width: 100%;\r\n            }\r\n            .lwrp .lwrp-list-item:not(.lwrp-no-posts-message-item){\r\n                \r\n                \r\n            }\r\n            .lwrp .lwrp-list-item .lwrp-list-link .lwrp-list-link-title-text,\r\n            .lwrp .lwrp-list-item .lwrp-list-no-posts-message{\r\n                \r\n                    \r\n            }\r\n        }<\/style>\r\n<div id=\"link-whisper-related-posts-widget\" class=\"link-whisper-related-posts lwrp\">\r\n            <h3 class=\"lwrp-title\">Related Posts<\/h3>    \r\n        <div class=\"lwrp-list-container\">\r\n                                            <ul class=\"lwrp-list lwrp-list-single\">\r\n                    <li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/infiniband-rdma-explained.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">InfiniBand RDMA Explained: How GPU Clusters Communicate at Microsecond Scale<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/infiniband-cables-guide.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">InfiniBand Cables: DAC vs AOC &amp; Connector Guide (2026)<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/nvidia-infiniband-switches.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">NVIDIA InfiniBand Switches: Quantum-2, Quantum-X800, and 2026 Roadmap<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/connectx-7-vs-connectx-8.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">ConnectX-7 vs ConnectX-8: Which NVIDIA SuperNIC Fits Your AI Cluster?<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/infiniband-price-guide-2026.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">InfiniBand Price Guide 2026: Switches, HCAs, Cables &amp; TCO<\/span><\/a><\/li><li class=\"lwrp-list-item\"><a href=\"https:\/\/www.fibermall.com\/blog\/infiniband-troubleshooting-guide.htm\" class=\"lwrp-list-link\"><span class=\"lwrp-list-link-title-text\">InfiniBand Troubleshooting: A Step-by-Step Guide for 2026<\/span><\/a><\/li>                <\/ul>\r\n                        <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction Marcus&#8217;s team unboxed their first Quantum-2 switches on a Monday morning, confident the hard part was over. GPUs were racked, NICs installed, and the fiber crew was scheduled. By Tuesday afternoon, every cage on the switch was empty. The OSFP modules they had ordered were the wrong heatsink type. Flat-top modules can&#8217;t seat properly [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":19681,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_wpscppro_dont_share_socialmedia":false,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"default","_twitter_share_type":"default","_linkedin_share_type":"default","_pinterest_share_type":"default","_linkedin_share_type_page":"default","_instagram_share_type":"default","_medium_share_type":"default","_threads_share_type":"default","_google_business_share_type":"default","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[2,29],"tags":[],"class_list":["post-19675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-networking"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.13 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7<\/title>\n<meta name=\"description\" content=\"Learn how to deploy 800G NDR InfiniBand with Quantum-2 switches and ConnectX-7 NICs. Covers OSFP, cabling, SM setup, verification, and migration.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7\" \/>\n<meta property=\"og:description\" content=\"Introduction Marcus&#039;s team unboxed their first Quantum-2 switches on a Monday morning, confident the hard part was over. GPUs were racked, NICs installed,\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\" \/>\n<meta property=\"og:site_name\" content=\"fibermall.com\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-26T06:47:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-17T09:21:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mia\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\"},\"author\":{\"name\":\"Mia\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/56a37c7b0e1e8c61823cd6ef48e8dce3\"},\"headline\":\"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7\",\"datePublished\":\"2026-06-26T06:47:42+00:00\",\"dateModified\":\"2026-08-17T09:21:43+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\"},\"wordCount\":2417,\"publisher\":{\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg\",\"articleSection\":[\"Blog\",\"Networking\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\",\"url\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\",\"name\":\"800G NDR InfiniBand Deployment Guide: Quantum-2 & ConnectX-7\",\"isPartOf\":{\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg\",\"datePublished\":\"2026-06-26T06:47:42+00:00\",\"dateModified\":\"2026-08-17T09:21:43+00:00\",\"description\":\"Learn how to deploy 800G NDR InfiniBand with Quantum-2 switches and ConnectX-7 NICs. Covers OSFP, cabling, SM setup, verification, and migration.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage\",\"url\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg\",\"contentUrl\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg\",\"width\":900,\"height\":600,\"caption\":\"800g ndr infiniband\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.fibermall.com\/blog.htm\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#website\",\"url\":\"https:\/\/www.fibermall.com\/blog.htm\/\",\"name\":\"fibermall.com\",\"description\":\"Optical Communication Expert\",\"publisher\":{\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.fibermall.com\/blog.htm\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#organization\",\"name\":\"fibermall.com\",\"url\":\"https:\/\/www.fibermall.com\/blog.htm\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Fiber-Mall-Logo.jpg\",\"contentUrl\":\"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Fiber-Mall-Logo.jpg\",\"width\":200,\"height\":67,\"caption\":\"fibermall.com\"},\"image\":{\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/56a37c7b0e1e8c61823cd6ef48e8dce3\",\"name\":\"Mia\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/2e83831e57346d5d451c45e43aa96d14fc758d8f72f7304810e123b36585382b?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/2e83831e57346d5d451c45e43aa96d14fc758d8f72f7304810e123b36585382b?s=96&d=mm&r=g\",\"caption\":\"Mia\"},\"description\":\"Optical Transmission Consultant\",\"sameAs\":[\"https:\/\/www.fibermall.com\/\"],\"url\":\"https:\/\/www.fibermall.com\/blog.htm?author=4\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"800G NDR InfiniBand Deployment Guide: Quantum-2 & ConnectX-7","description":"Learn how to deploy 800G NDR InfiniBand with Quantum-2 switches and ConnectX-7 NICs. Covers OSFP, cabling, SM setup, verification, and migration.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm","og_locale":"en_US","og_type":"article","og_title":"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7","og_description":"Introduction Marcus's team unboxed their first Quantum-2 switches on a Monday morning, confident the hard part was over. GPUs were racked, NICs installed,","og_url":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm","og_site_name":"fibermall.com","article_published_time":"2026-06-26T06:47:42+00:00","article_modified_time":"2026-08-17T09:21:43+00:00","og_image":[{"width":900,"height":600,"url":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg","type":"image\/jpeg"}],"author":"Mia","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Mia","Est. reading time":"12 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#article","isPartOf":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm"},"author":{"name":"Mia","@id":"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/56a37c7b0e1e8c61823cd6ef48e8dce3"},"headline":"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7","datePublished":"2026-06-26T06:47:42+00:00","dateModified":"2026-08-17T09:21:43+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm"},"wordCount":2417,"publisher":{"@id":"https:\/\/www.fibermall.com\/blog.htm\/#organization"},"image":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage"},"thumbnailUrl":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg","articleSection":["Blog","Networking"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm","url":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm","name":"800G NDR InfiniBand Deployment Guide: Quantum-2 & ConnectX-7","isPartOf":{"@id":"https:\/\/www.fibermall.com\/blog.htm\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage"},"image":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage"},"thumbnailUrl":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg","datePublished":"2026-06-26T06:47:42+00:00","dateModified":"2026-08-17T09:21:43+00:00","description":"Learn how to deploy 800G NDR InfiniBand with Quantum-2 switches and ConnectX-7 NICs. Covers OSFP, cabling, SM setup, verification, and migration.","breadcrumb":{"@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#primaryimage","url":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg","contentUrl":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2026\/06\/800g-ndr-infiniband.jpg","width":900,"height":600,"caption":"800g ndr infiniband"},{"@type":"BreadcrumbList","@id":"https:\/\/www.fibermall.com\/blog\/800g-ndr-infiniband-deployment-guide.htm#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fibermall.com\/blog.htm"},{"@type":"ListItem","position":2,"name":"800G NDR InfiniBand Deployment Guide: Quantum-2 &amp; ConnectX-7"}]},{"@type":"WebSite","@id":"https:\/\/www.fibermall.com\/blog.htm\/#website","url":"https:\/\/www.fibermall.com\/blog.htm\/","name":"fibermall.com","description":"Optical Communication Expert","publisher":{"@id":"https:\/\/www.fibermall.com\/blog.htm\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fibermall.com\/blog.htm\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fibermall.com\/blog.htm\/#organization","name":"fibermall.com","url":"https:\/\/www.fibermall.com\/blog.htm\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/logo\/image\/","url":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Fiber-Mall-Logo.jpg","contentUrl":"https:\/\/www.fibermall.com\/blog\/wp-content\/uploads\/2024\/12\/cropped-Fiber-Mall-Logo.jpg","width":200,"height":67,"caption":"fibermall.com"},"image":{"@id":"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/56a37c7b0e1e8c61823cd6ef48e8dce3","name":"Mia","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fibermall.com\/blog.htm\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/2e83831e57346d5d451c45e43aa96d14fc758d8f72f7304810e123b36585382b?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/2e83831e57346d5d451c45e43aa96d14fc758d8f72f7304810e123b36585382b?s=96&d=mm&r=g","caption":"Mia"},"description":"Optical Transmission Consultant","sameAs":["https:\/\/www.fibermall.com\/"],"url":"https:\/\/www.fibermall.com\/blog.htm?author=4"}]}},"_links":{"self":[{"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/posts\/19675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19675"}],"version-history":[{"count":3,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/posts\/19675\/revisions"}],"predecessor-version":[{"id":20079,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/posts\/19675\/revisions\/20079"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=\/wp\/v2\/media\/19681"}],"wp:attachment":[{"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fibermall.com\/blog.htm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}