plugging FET 4 out of 8, N5K-N2K, What's happen?

[n.poongsawad]

Hi,

In case there is light load on a single N2K.

I suppose NOT to fully plug all FET of 2232PP (upto 8 FET 10G) into N5K.

Q

1. Would they work/fwd correctly?

2. Will those show some ERROR or WARNING on configuring?

3. How do they work, Hashing like PortChannel?

Thanks in advance,

Nipat.p

[Steve Fuller · Accepted solution]

Hi,

What you are proposing is a perfectly valid configuration and you will receive no error messages if you do this.

In terms of the load-balancing, the FEX links on the Nexus 5K are configured as a port-channel and as such the hashing algorithm configured will be used to determine the load balancing.

The following is an example configuration of only two links used to two Nexus 2232 where I do exactly what you're proposing:

ocs5548-1# sh run fex

!Command: show running-config fex

!Time: Fri Apr 12 10:39:05 2013

version 5.1(3)N2(1)

feature fex

fex 101

  pinning max-links 1

  description "FEX0101"

fex 102

  pinning max-links 1

  description "FEX0102"

interface port-channel101

  fex associate 101

interface port-channel102

  fex associate 102

interface Ethernet1/1

  fex associate 101

interface Ethernet1/2

  fex associate 101

interface Ethernet1/3

  fex associate 102

interface Ethernet1/4

  fex associate 102

Regards