Re: Multicast drops

No rate limiting anywhere...

On Fri, Jun 10, 2011 at 2:12 PM, Babatunde Sanda <sbabatunde1_at_ca.rr.com> wrote:
> Is their any rate limiting on any of the devices. I remember having a similar problem that turned out to be bit-rate limit on a hop switch. Increasing the rate solved it.
>
> Babatunde Sanda B.Sc (Acct.) CCNP, CCVP, CCNA(R,S,V), MCSA, N+, A+.
> :: Sent from my Iphone. Apologies for errors and brevity. ::
>
> On Jun 10, 2011, at 9:30 AM, Persio Pucci <persio_at_gmail.com> wrote:
>
>> 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 - 14:28:20 ART