VSS PFC3C etherchannel hash result

[nick.davey]

Hi,

I am trying to determine the egress interface using the hash-result command as follows:

show etherchannel load-balance hash-result interface po 2 switch 1 mixed 10.64.2.2 200 122 10.64.2.1 200

I have noticed in that command that there is a "ignr-dst-vlan" option on the command that is marked as PFC3C only, for example:

show etherchannel load-balance hash-result interface po 2 switch 1 mixed 10.64.2.2 200 122 10.64.2.1 200 ?

  ignr-dst-vlan  Ignore destination VLAN (PFC3C only)

My load-balance algorithm is "src-dst-mixed-ip-port vlan included" - does this mean in a PFC3C system the destination vlan is ignored when computing the hash and in a PFC3X system it is used?

I cant find any documentation on destination vlan for etherchannels.

Regards,

Nicky Davey.

[Reza Sharifi]

Hi Nick,

It appear to be so, as I also tried this command on a Sup-2T with PFC4 and it shows the same thing.

ignr-dst-vlan  Ignore destination VLAN (PFC3C only)

HTH

[nick.davey]

Hi Reza,

So you have come to the same conclusion as me, that the PFC3C does not include the destination vlan in the load-balancing algorithm.

Is there anyone from cisco that could confirm this as I dont want to make an assumption?

Regards,

Nicky Davey.

[Arumugam Muthaiah · Accepted solution]

Hi Nicky,

I verified on lab, which has VS-S720-10G with PFC3CXL and i can see the same behavior,

VSS#show etherchannel load-balance hash-result interface port-channel 105 switch 1 mixed 10.10.10.20 200 1 10.10.10.1 200 ?

  ignr-dst-vlan  Ignore destination VLAN (PFC3C only)

Regards,

Aru