[c-nsp] WS-C4506 dropped links which had LACP enabled under heavy load

[Martin T]

Hi,

>So are the port-channel ints dropping line protocol, or the gig-E ints themselves?
GigE interfaces themselves.

>If the gig-E ints, are you saying the non-channeled ints stay up, but the channeled ones drop?
Exactly. Physical GigE interfaces dropped line-protocol, but only
those physical GigE interfaces, which had LACP enabled and were part
of a port-channel.


regards,
Martin

2013/6/11, Chuck Church <chuckchurch at gmail.com>:
> So are the port-channel ints dropping line protocol, or the gig-E ints
> themselves?  If the gig-E ints, are you saying the non-channeled ints stay
> up, but the channeled ones drop?  I would think Ethernet keepalives
> wouldn't
> be a function of the CPU, but an ASIC thing.  Could be wrong though...
>
> Chuck
>
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Aaron
> Sent: Tuesday, June 11, 2013 10:52 AM
> To: Martin T
> Cc: cisco-nsp
> Subject: Re: [c-nsp] WS-C4506 dropped links which had LACP enabled under
> heavy load
>
> Keep alives need to be generated
>
>
> On Tue, Jun 11, 2013 at 8:35 AM, Martin T <m4rtntns at gmail.com> wrote:
>
>> Hi,
>>
>> has anyone seen a behavior where Cisco WS-C4506 drops "line-protocol"
>> on GigE ports(WS-X4306-GB module) which have LACP enabled when SUP(Sup
>> V-10GE) CPU load is ~100%? I guess that LACP frames are processed in
>> SUP CPU and it's normal to see LACPDUs time-out, but how can this
>> affect interface line-protocol?
>>
>>
>> regards,
>> Martin
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