Re: Multicast drops

Wondering if replacing the SFP optical connection between them by
RJ45s could be of any help (considering I have replaced the SFPs
before to ensure it was not hardware)

On Friday, June 10, 2011, Persio Pucci <persio_at_gmail.com> wrote:
> Things got funnier...
>
> before my international hop I have two 7304 (being one of them the one
> where the int'l connection is) and if I test connectivity between
> them, I'll miss a ping packet every 10 seconds. All other packets make
> it in 1ms or less, but every ~10 seconds I miss a ping.
>
> I have already changed the SFPs and patch cords on these connections,
> have even replaced both NPE-G100 on the 7300s. I still have those
> hicups.
>
> No CoPP is configured, and I can feel this symptom when accessing
> remote terminals...
>
> What could it be besides hardware? The 10s constant makes me think of
> some recurring process, but can't find anything.
>
>
> On Wed, Jun 8, 2011 at 11:37 AM, Persio Pucci <persio_at_gmail.com> wrote:
>> Hi all,
>>
>> I am having some trouble trying to identify and determine what is
>> causing packet drops on my multicast network, and I am looking for
>> someone to shed some light into it :)
>>
>> From my complete network ,it looks like we've been able to pin-point
>> the leg where the packet drops occur (we've done it by capturing
>> packets along the way and comparing the captures). The problematic leg
>> is an international OC12 circuit, 100ms latency, from a 7304 running
>> NPE-G100, landing on a 3750.
>>
>> We've tried to eliminate hardware issues, replacing all SFPs, patch
>> cords, changing interfaces and even changing NPEs to no good. We still
>> see some random packet drops along the route. The multicast stream is
>> about 5Mbps and there is no concurrent traffic (yeah, an OC12 for
>> 5Mbps...).
>>
>> Appreciate any help!

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Received on Fri Jun 10 2011 - 12:50:07 ART