Re: Multicast drops

sh env says everything is normal (voltage, temperature, etc). Device
is being polled by SNMP every minute. I have removed snmp env traps
but this does not seem to affect ping drops or EnvMon rising every
10s.

I don't see errors on the interface on the CLI counters, but SNMP
graphs some... (http://imageshack.us/photo/my-images/34/49929742.jpg/)

Tried changing OSPF SPF calc max/min timers (they were on the 10s
default) but this also seemed helpless.

On Fri, Jun 10, 2011 at 1:13 PM, Jason Boyers <jboyers_at_ipexpert.com> wrote:
> Are you seeing any errors on those connections? Also, errors on a physical
> link would not typically show up as consistent (about every 10 seconds) as
> the connectivity problem you are describing. I would look into what is
> causing Envmon to spike. Are you monitoring your temperature, voltage,
> and/or power supply status very frequently? Or, does "show environment"
> show anything out of the ordinary which may cause it to send an excessive
> number of snmp traps?
>
> Jason Boyers - CCIE #26024 (Wireless)
> Technical Instructor - IPexpert, Inc.
> Mailto: jboyers_at_ipexpert.com
>
>
>
> On Fri, Jun 10, 2011 at 11:50 AM, Persio Pucci <persio_at_gmail.com> wrote:
>>
>> 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 - 13:30:31 ART