Nexus 3K C31108TC-V vs 31108TCV-32T

[aok]

Hello

We're looking at the Nexus 31108s and wondered if there are any differences between the C31108TC-V and the 31108TCV-32T models apart from the number of RJ45 ports (48 vs 32)?

Also, are the 10G copper ports capable of 1G or are they 10G only?

Thanks

AK

[Reza Sharifi]

Hi,

All the copper ports are 1/10. See below and also the link:

Get high performance, advanced programmability, and wire-rate Layer 2 and 3 switching based on the Cisco NX-OS operating system. The 31108TC-V is a 48-port, 1/10-Gbps switch with 40/100-Gbps uplinks. Ideal for building cost-effective, power-efficient data centers, this compact switch supports DevOps toolsets. It offers flexibility, mobility, and scale for cloud and service providers.

link:

https://www.cisco.com/c/en/us/products/switches/nexus-31108tc-v-switch/index.html

HTH

[luis_cordova]

 @aok ,

Check the datasheet explication:

-  The Cisco Nexus 31108TC-V (Figure 3) is a 10GBASE-T switch with 48 10GBASE-T ports and 6 QSFP28 ports. This switch is well suited for customers who want to reuse existing copper cabling while migrating from 1-Gbps to 10-Gbps servers. QSFP28 port can operate in native 100-Gbps or 40-Gbps mode or 4 x 10-Gbps mode. The 48 ports support 100MBASE, 1GBASE, and 10GBASE-T, and the 6 QSFP ports support 10, 40, and 100 Gbps.

-  The Cisco Nexus 31108TCV-32T (Figure 3) is the Cisco Nexus 31108TC-V with 32 10GBASE-T ports and 6 QSFP+ ports enabled. The ports are enabled through software licensing. This switch provides a cost-effective solution for customers who require up to 32 10GBASE-T ports per rack. This switch comes with a 32-10GBASE-T port license preinstalled. To enable the remaining 16 10GBASE-T ports, the customer installs the 16-port upgrade license.

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-3000-series-switches/datasheet-c78-736608.html

Regards

Remember to mark the correct answers as solved, since that helps other users with similar doubts

[aok]

Thanks for the info, we'll likely go with the 32Ts. We currently have two stacked switches in each rack and would like to keep redundancy with the 32Ts, what are our options for that?

[Reza Sharifi]

In the Nexus world, the closest to stacking is vPC.  So, you can connect 2 switches together with vPC to build redundancy. Unlike stacking, with vPC, you still have 2 devices and you manage both devices with 2 different IPs vs 1. You also need to run VRRP or HSRP for end device redundancy vs with stacking there is no need for either one of these protocols. 

Here are a couple of documents to look at. One of them is referencing the 7k series but that is fine because the concept is the same regardless of the model. 

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-5000-series-switches/design_guide_c07-625857.pdf

https://www.cisco.com/c/dam/en/us/td/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdf

HTH