Re: Etherchannel issue...

While the other side is down, your output in another post didn't show
admin down, so they aren't shut.

Post the "show run int (intf)" from each side here.

Are you sure these interfaces are physically connected to one another?
Default the interfaces and do "show cdp nei" to verify basic
functionality before adding channel group.

Scott

Jitendra Anbu wrote:
> Hi Gurus,
>
> Can someone help me to understand the problem bellow;
>
> I created an EC between 3550 & 3750 (ports 23-24. Both pots were shut before
> configuring). The 3550 was created as mode: desirable and the 3750 as mode:
> ON. (I am hoping this is ok - so far)
>
> On the 3750 I see the following error.
>
> SW2(config-if-range)#do sh int gi1/0/23
> GigabitEthernet1/0/23 is down, line protocol is down (err-disabled)
>
> Whats causing this err-disable state?
>
> The log looks like this
>
> *Mar 1 08:12:37.200: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Gi1/0/23, putting Gi1/0/23 in err-disable state
> *Mar 1 08:12:37.200: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Gi1/0/24, putting Gi1/0/24 in err-disable state.
>
> The 3550 say both ports are down.
>
> Whats the way around this? I tried a few things.... Change both ends to mode:
> ON but same issue. Shut  no shut same issues. Can anyone help?
>
> Thanking you all in advance.
>
> Jit
>
>
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Received on Tue May 12 2009 - 10:32:07 ART