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

[Martin T]

Aaron,

as far as I know, keepalive frames(EtherType 0x9000) have nothing to
do with Ethernet interface "line protocol". You can connect two ports
with keepalive frames disabled, but you'll still see the "line
protocol" up. Cisco "line protocol" should be "link integrity check"
signals sent by Ethernet transceiver circuits(PHY).


regards,
Martin


2013/6/11, Aaron <dudepron at gmail.com>:
> 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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