Re: Strange status of EtherChannel!

From memory when i was trying to sort it out it wasn't that (suspended) nor
was it error-disabled (D)

On Tue, Sep 1, 2009 at 4:34 PM, William McCall <william.mccall_at_gmail.com>wrote:

> Just a crappy scenario that might do it... if the port wasn't configured to
> trunk and the other ports were, might it cause this scenario?
>
> Too lazy to lab it up myself and see the results.
>
>
> On Tue, Sep 1, 2009 at 12:42 AM, Joe Astorino <jastorino_at_ipexpert.com>wrote:
>
>> Just FYI guys I did lab this up and it has nothing to do with the other
>> side
>> not being configured. I was able to configure Cat1 with "channel-group 12
>> mode on" on the two interfaces connecting to Cat2. On Cat2 I only put the
>> channel-group command on one interface...interestingly enough, on Cat1 it
>> still shows both interfaces in the port channel, the port channel up, and
>> both with a status of "P." I actually would have expected that the 2nd
>> link
>> would have not showed a "P" on Cat1. On Cat2, it just showed 1 link in
>> the
>> bundle.
>>
>> Just FYI Cat1 here is a 3550 and Cat2 is a 3560.
>>
>> Cat1#sh run | beg 0/23
>> interface FastEthernet0/23
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> channel-group 12 mode on
>> !
>> interface FastEthernet0/24
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> channel-group 12 mode on
>>
>> interface Port-channel12
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> end
>>
>>
>>
>> Cat2(config-if)#do sh run | beg 0/23
>> interface FastEthernet0/23
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> channel-group 12 mode on
>> !
>> interface FastEthernet0/24
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> !
>> interface Port-channel12
>> switchport trunk encapsulation dot1q
>> switchport mode trunk
>> end
>>
>> Cat1#sh etherchan sum
>> Flags: D - down P - in port-channel
>> I - stand-alone s - suspended
>> H - Hot-standby (LACP only)
>> R - Layer3 S - Layer2
>> U - in use f - failed to allocate aggregator
>> u - unsuitable for bundling
>> w - waiting to be aggregated
>> d - default port
>>
>>
>> Number of channel-groups in use: 1
>> Number of aggregators: 1
>>
>> Group Port-channel Protocol Ports
>>
>> ------+-------------+-----------+-----------------------------------------------
>> 12 Po12(SU) - Fa0/23(P) Fa0/24(P)
>>
>>
>>
>> Cat2(config-if)#do sh etherchan sum
>> Flags: D - down P - in port-channel
>> I - stand-alone s - suspended
>> H - Hot-standby (LACP only)
>> R - Layer3 S - Layer2
>> U - in use f - failed to allocate aggregator
>> u - unsuitable for bundling
>> w - waiting to be aggregated
>> d - default port
>>
>>
>> Number of channel-groups in use: 1
>> Number of aggregators: 1
>>
>> Group Port-channel Protocol Ports
>>
>> ------+-------------+-----------+-----------------------------------------------
>> 12 Po12(SU) - Fa0/23(P)
>>
>>
>>
>>
>>
>>
>>
>> On Tue, Sep 1, 2009 at 12:09 AM, Martin Hogan
>> <martin.john.hogan_at_gmail.com>wrote:
>>
>> > Hi,
>> >
>> > I've had this happen to me whilst labbing - it was during a broadcast
>> > storm.
>> > I couldn't replicate it nor work out what had happened though.
>> >
>> > Martin
>> >
>> >
>> >
>> >
>> > On Thu, Aug 27, 2009 at 11:28 PM, But Nicky <lyredhair_at_gmail.com>
>> wrote:
>> >
>> > > Dear all,
>> > >
>> > > SW2(config)#do sh eth summ
>> > > Flags: D - down P - in port-channel
>> > > I - stand-alone s - suspended
>> > > H - Hot-standby (LACP only)
>> > > R - Layer3 S - Layer2
>> > > U - in use f - failed to allocate aggregato
>> > > U - unsuitable for bundling
>> > > W - waiting to be aggregated
>> > > D - default port
>> > > Number of channel-groups in use: 1
>> > > Number of aggregators: 1
>> > > Group Port-channel Protocol Ports
>> > >
>> > >
>> >
>> ------+-------------+-----------+-----------------------------------------------
>> > >
>> > > 12 Po12(SU) - Fa0/19(P) Fa0/20(P) Fa0/21(P)
>> > Fa0/22(P)
>> > > Fa0/23() Fa0/24(P) Fa0/25P)
>> > > Fa0/26(P)
>> > >
>> > >
>> > > Each interface are shown as (P), except F0/23 (),What is the status of
>> > > F0/23? I have not saw it before, please help.
>> > >
>> > > Many thanks,
>> > > But Nguyen.
>> > >
>> > > P/S: This is question for OEQ, which I collected from internet, do not
>> > > require posting the configuration.
>> > >
>> > >
>> > > Blogs and organic groups at http://www.ccie.net
>> > >
>> > >
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>> >
>>
>>
>> --
>> Regards,
>>
>> Joe Astorino - CCIE #24347 R&S
>> Technical Instructor - IPexpert, Inc.
>> Cell: +1.586.212.6107
>> Fax: +1.810.454.0130
>> Mailto: jastorino_at_ipexpert.com
>>
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>
>
> --
> William McCall, CCIE #25044

Blogs and organic groups at http://www.ccie.net
Received on Tue Sep 01 2009 - 16:54:07 ART