Cisco Nexus 9508 Switch 40G QSFP+ Cabling Solutions

Posted on by FS.COM

As a family member of Cisco Nexus 9500 Series, Cisco Nexus 9508 is a modular switch that delivers industry-leading high-performance and high-density 40G and future 100G Ethernet. In addition, Cisco Nexus 9508 switch is also one of the first members of the Cisco Nexus 9000 Series platform. It is designed for a broad range of environments including physical and virtual computing, Big Data application and high-performance computing. This post will give a detailed introduction on Cisco Nexus 9508 switch and its 40G QSFP+ cabling solutions.

About Cisco Nexus 9508 Switch

Being a 13RU switch, the Cisco Nexus 9508 can offer up to 8 line cards slots with a comprehensive selection of modular line cards. In fact, it has three line card options (as shown in the following figure) as an initial offering, which are 36 port QSFP+ 40Gbps line card, 48 ports of 10GBase-T & 4 ports of QSFP+ 40Gbps line card, and 48 ports of SFP+ 10Gbps & 4 ports QSFP+ 40Gbps line card. Thus, the Cisco Nexus 9508 switch can be configurable with up to 1152 10 Gigabit Ethernet or 288 40 Gigabit Ethernet ports, providing sufficient capacity for both access and aggregation layer deployments.

line cards

Cisco Nexus 9508 Switch 40G QSFP+ Cabling Solutions

Since 40G is the hotpot in data center, this part will focus on the 40G QSFP+ cabling solutions for Cisco Nexus 9508 switch.

40G QSFP+ Cabling Solutions

QSFP+ to QSFP+ Direct connection

As we all know, direct attach cables (DACs) are often used to connect two or more switches which are in the same rack or in the adjacent rack. This is done to reduce the cabling cost for the reason that DACs are much cheaper than transceivers and fiber patch cords. The following diagram takes Cisco Nexus 93128 and Cisco Nexus 9396 as examples to introduce the 40G QSFP+ to 40G QSFP+ DAC cabling of Cisco Nexus 9508 switch:

qsfp+ to qsfp+ dac

FS.COM 40G QSFP+ DAC Cabling Products for Cisco Nexus 9508 Switch
ID# Product Description
30884 1m Cisco QSFP-H40G-CU1M Compatible 40G QSFP+ Passive Direct Attach Copper Cable
30897 3m Cisco QSFP-H40G-CU3M Compatible 40G QSFP+ Passive Direct Attach Copper Cable
30898 5m Cisco QSFP-H40G-CU5M Compatible 40G QSFP+ Passive Direct Attach Copper Cable
48951 1m Cisco QSFP-H40G-ACU1M Compatible 40G QSFP+ Active Direct Attach Copper Cable
48956 6m Cisco QSFP-H40G-ACU6M Compatible 40G QSFP+ Active Direct Attach Copper Cable
30899 7m Cisco QSFP-H40G-ACU7M Compatible 40G QSFP+ Active Direct Attach Copper Cable

Note:Except for 40G QSFP+ DACs, FS.COM also provides various 40G QSFP+ transceivers and fiber patch cables for the 40G QSFP+ direct connection of Cisco Nexus 9508 switch.

QSFP+ to QSFP+ Interconnection

Multimode fiber cabling is generally preferred when the distance between Cisco Nexus 9508 switch and other switches is less than 400 meters. In this circumstance, 40G QSFP+ SR4/CSR4 transceivers and MPO interconnect cable assemblies are often used. The following scenario shows how the Cisco Nexus 9508 switch is connected to Cisco Nexus 9396 and 93128 switches with 40G QSFP+ SR4/CSR4 optics and MPO cable assemblies:

qsfp+ to qsfp+

FS.COM 40G QSFP+ Optics and Cabling Products for Cisco Nexus 9508 Switch
ID# Product Description
36157 Cisco QSFP-40G-SR4 Compatible 40GBASE-SR4 QSFP+ 850nm 150m MTP/MPO DOM Transceiver
36165 Cisco QSFP-40G-CSR4 Compatible 40GBASE-CSR4 QSFP+ 850nm 400m MTP/MPO DOM Transceiver
52024 Fiber Adapter Panel with 12 MTP(12/24F) Key-up/Key-up Adapters (Charcoal Gray), Horizontal
34684 1RU Rack Mount Fiber Enclosure unloaded, holds up to 4 FAPs Fiber Adapter Panels

10G to 40G Migration Solutions

10G SFP+ to 40G QSFP+ Direct Connection

Sometimes, Cisco Nexus 9508 switch also needs to be connected to a 10G switch for 10G→40G migration. And QSFP+ to 4×SFP+ DAC is often used at this time. Here is a scenario showing a wiring option for connecting Cisco Nexus 9508 switch to Cisco Nexus 2232 switch:

qsfp+ to sfp+ dac

FS.COM QSFP+ to SFP+ DAC Cabling Products for Cisco Nexus 9508 Switch
ID# Product Description
30894 1m Cisco QSFP-4SFP10G-CU1M Compatible 40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable
30903 3m Cisco QSFP-4SFP10G-CU3M Compatible 40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable
30904 5m Cisco QSFP-4SFP10G-CU5M Compatible 40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable

Note:Except for QSFP+ to SFP+ DACs, FS.COM also provides various 40G QSFP+ transceivers, 10G SFP+ transceivers and MPO/MTP-LC harness fiber patch cables for the 10G SFP+ to 40G QSFP+ direct connection of Cisco Nexus 9508 switch.

10G SFP+ to 40G QSFP+ Interconnection

Except for 40 Gbps, the 40G port of Cisco Nexus 9508 switch can also be logically configured as 4×10 Gigabit Ethernet interfaces. And the use of breakout cables allows the 40G port to connect to SFP+ ports. In fact, with the use of a MPO to LC breakout cable, the Cisco Nexus 9508 switch can be connected to 10G switch platforms such as Nexus 5596 switch (as shown in the follow figure).

qsfp+ to sfp+

FS.COM QSFP+ to SFP+ Optics and Cabling Products for Cisco Nexus 9508 Switch
ID# Product Description
11552 Cisco SFP-10G-SR Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver
36157 Cisco QSFP-40G-SR4 Compatible 40GBASE-SR4 QSFP+ 850nm 150m MTP/MPO DOM Transceiver
36165 Cisco QSFP-40G-CSR4 Compatible 40GBASE-CSR4 QSFP+ 850nm 400m MTP/MPO DOM Transceiver
42332 1M MTP-6LC Duplex 10G OM3 50/125 Multimode Fiber Optic Harness Fan-out/Breakout Cable, 12 Fiber, Female, LSZH-Aqua, Bunch, 40GBASE-SR4 Interconnect Solution
52024 Fiber Adapter Panel with 12 MTP(12/24F) Key-up/Key-up Adapters (Charcoal Gray), Horizontal
34684 1RU Rack Mount Fiber Enclosure unloaded, holds up to 4 FAPs Fiber Adapter Panels
Conclusion

The Cisco Nexus 9508 switch is designed to optimize network performance to allow virtualized environments to function without the restrictions that traditional network architecture imposes. To make sure the Cisco Nexus 9508 switch to work at its highest level, it requires a physical infrastructure to help ensure superior performance. FS.COM solutions can give Cisco Nexus 9508 switch the performance, flexibility, and reliability needed to operate without constraints. Kindly contact us over sales@fs.com for more information.

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