Re: STP question// LACP

Thanks Steve,

For troubleshooting purposes, i want to enable it only on the
suspended port. Is it possible to enable it on only a single port-channel
member or is it mandatory to enable on the entire port-channel members? We
cant bounce the link as it is production.

Ramesh
________________________________
 From: Steve Di Bias <sdibias_at_gmail.com>
To:
marc abel <marcabel_at_gmail.com>
Cc: ramesh Kumar
<rameshkumar123321_at_yahoo.com>; Cisco certification <ccielab_at_groupstudy.com>
Sent: Tuesday, February 5, 2013 8:53 AM
Subject: Re: STP question// LACP
Configure it on all of the physical interfaces and not on the port-channel
itself.

Int range x/x
udld port <aggressive>

Just make sure you do this on
both sides and you can view with 'show udld
neighbors'

HTH

On Monday,
February 4, 2013, marc abel wrote:

> Have you bounced all ends of all the
links or is this a production link?
> On Feb 4, 2013 9:11 PM, "ramesh Kumar"
<rameshkumar123321_at_yahoo.com<javascript:_e({}, 'cvml',
'rameshkumar123321_at_yahoo.com');>>
> wrote:
>
>> Hi Steve,
>>
>> The configs
are identical both sides.
>>
>> I am suspecting
>> unidirectional link issue.
when i do show lacp counters port-channel <ID>
>> it
>> shows LACP PDU being
sent but not received at both ends
>> I am planning to
>> enable UDLD and see.
But I am wondering can we enable UDLD on a single
>> port-channel member or it
has be enabled on the entire port-channel
>> interface?
>> can you please
assist?
>>
>> Ramesh
>>
>>
>> ________________________________
>> From: Steve
>> Di Bias <sdibias_at_gmail.com <javascript:_e({}, 'cvml',
>>
'sdibias_at_gmail.com');>>
>> To: ramesh Kumar <rameshkumar123321_at_yahoo.com
<javascript:_e({}, 'cvml',
>> 'rameshkumar123321_at_yahoo.com');>>
>> Cc:
"ccielab_at_groupstudy.com <javascript:_e({}, 'cvml',
>>
'ccielab_at_groupstudy.com');>" <ccielab_at_groupstudy.com <javascript:_e({},
>>
'cvml', 'ccielab_at_groupstudy.com');>>
>> Sent: Saturday,
>> February 2, 2013
11:15 PM
>> Subject: Re: STP question// LACP
>>
>> No TCN since STP
>> is
running at the PortChannel level. It will however send
>> a trap and will how
>> up in your local log buffer:
>>
>> If a segment within an EtherChannel
fails,
>> traffic previously carried over
>> the failed link switches to the
remaining
>> segments within the EtherChannel.
>> When a failure occurs, the
EtherChannel
>> feature sends a trap that
>> identifies the switch, the
EtherChannel, and the
>> failed link.
>>
>> Regarding LACP an suspended link.
Could you please provide
>> interface
>> configs from all ports on both sides?
Are they all identical?
>>
>>
>>
>>
>> On
>> Sat, Feb 2, 2013 at 5:08 AM,
ramesh Kumar <rameshkumar123321_at_yahoo.com<javascript:_e({}, 'cvml',
'rameshkumar123321_at_yahoo.com');>
>> >wrote:
>> > Hello,
>> >
>> > I have a
port-channel of 8 links. one of them went to suspended
>> state.
>> > i took
that link out of PO and the came back up as normal but adding
>> it
>> > back
>> > to the PO it goes to the suspend state. the config at both end are
>> the
>> > same.
>> > they are doing LACP and mode is set to be active at both ends.
>> What else we
>> > can try here? any clue?
>> >
>> > Also i would like to
know if any
>> STP tcn is generated
>> > when a port-channel link moves to
suspend state or not.
>> >
>> > please advice.
>> > Ramesh
>> >
>> >
>> >
Blogs and organic groups at
>> http://www.ccie.net
>> >
>> >
>>
Received on Mon Feb 04 2013 - 19:59:50 ART