6500 series port-channel id limit

Unanswered Question
Apr 12th, 2010

SWLAB100(config)#int port-channel ?

  <1-256>  Port-channel interface number

On my nexus i am configuring vpc using portchanel 2000.

On the 6509 I can only go to a max of 256. Is there any new version of IOS that supports up to 4096 channel ids. I know Nexus does.

The portchannel on the nexxus and the 6509 should match.

Thanks

I have this problem too.
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Jon Marshall Mon, 04/12/2010 - 13:03

r.shummoogum wrote:

SWLAB100(config)#int port-channel ?

  <1-256>  Port-channel interface number

On my nexus i am configuring vpc using portchanel 2000.

On the 6509 I can only go to a max of 256. Is there any new version of IOS that supports up to 4096 channel ids. I know Nexus does.

The portchannel on the nexxus and the 6509 should match.

Thanks

Port-channel ids are local to the switch so it doesn't matter whether the nexus and the 6500 agree on the port-channel id. Admit it would be nice if you could get them to match but it's not necessary.

Jon

Giuseppe Larosa Mon, 04/12/2010 - 13:05

Hello R.shummoogum,

>> The portchannel on the nexxus and the 6509 should match.

why?

see below

11     Po11(SU)        LACP      Te6/2(P)       Te6/6(P)       Te6/10(P)     
                                 Te6/14(P)    

sh cdp n te6/2
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
                  D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
xxxx  (TBM13446687)
                 Ten 6/2           151            R S I C N7K-C7010 Eth 1/1

Hope to help

Giuseppe

r.shummoogum Mon, 04/12/2010 - 13:49

I have done some reading and I think Jon is right. For better managability, we can match them.

 

 

 

To simplify the configuration, you can assign the vPC ID number to every port channel to be the same as the port channel itself (that is, vPC ID 10 for port channel 10).

 

 

 

However,

The vPC number that you assign to the port channel connecting to the downstream device from the vPC peer device must be identical on both vPC peer devices

Thanks

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