EtherChannel Question

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May 28th, 2010
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I have not seen this before and was wondering what it means. When I run the command


show etherchannel 52 sum


I see a Po52 and a Po52B


What does the B means?


This is happening on another one as well except it says A and not B


6509-VSS#show etherchannel 52 sum
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      N - not in use, no aggregation
        f - failed to allocate aggregator

        M - not in use, no aggregation due to minimum links not met
        m - not in use, port not aggregated due to minimum links not met
        u - unsuitable for bundling
        d - default port

        w - waiting to be aggregated
Number of channel-groups in use: 80
Number of aggregators:           83

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
52     Po52(SU)        LACP      Gi2/2/30(P)   
52     Po52B(SU)       LACP      Gi1/2/40(P)  

Last applied Hash Distribution Algorithm: Fixed





Mike

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tj.mitchell Fri, 05/28/2010 - 10:04
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In the output of the show etherchannel summary command, the following conventions apply:

In the column that displays the protocol that is used for the channel, if the channel mode is ON, a hyphen (-) is displayed.

For LACP, multiple aggregators are supported. For example, if two different bundles are created, Po1 indicates the primary aggregator, and Po1A and Po1B indicates the secondary aggregators.


http://www.cisco.com/en/US/partner/docs/ios/interface/command/reference/ir_s3.html#wp1019580 -- and scroll down just a little bit...



Thanks,

TJM

burleyman Fri, 05/28/2010 - 10:32
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Thanks....but for some reason I cannot get to that document....what is the name of the doc I can search on it.



Mike

tj.mitchell Fri, 05/28/2010 - 10:36
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The name is:

Cisco IOS Interface and Hardware Component Command Reference


See if you can find it under that, for me it's under partner docs.


Thanks,

TJM

burleyman Fri, 05/28/2010 - 10:36
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Never mind I just changed   partner    to   customer



Mike

burleyman Fri, 05/28/2010 - 10:47
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That helped alot thanks....


Now another question.....how can I not have them have multiple aggregators? I have the same exact setup on another server and I do not have multiple aggregators. What could cause multiple aggregators .




ike

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