Re: Multicast drops

Do you have CEF running?

--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
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On Fri, Jun 10, 2011 at 11:44, Persio Pucci <persio_at_gmail.com> wrote:
> IP input oscilates below 20%. Is it safe to disable SPD?
>
>
> On Friday, June 10, 2011, David Prall <dcp_at_dcptech.com> wrote:
>> Flushes are for process switched traffic. This is a function of Selective
>> Packet Discard (SPD). Data Plane traffic is dropped so that Routing
>> Protocols and other control plane traffic stays up. What is the CPU
>> Utilization on the router, sh proc cpu sort? I'd suspect that IP Input is
>> high.
>>
>> David
>>
>> --
>> http://dcp.dcptech.com
>>
>>
>>> -----Original Message-----
>>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>>> Persio Pucci
>>> Sent: Friday, June 10, 2011 2:05 PM
>>> To: ccielab_at_groupstudy.com
>>> Subject: Re: Multicast drops
>>>
>>> PS: I've tried increasing the queue to 4096, no good
>>>
>>> On Friday, June 10, 2011, Persio Pucci <persio_at_gmail.com> wrote:
>>> > Does this help?
>>> >
>>> > B  Last clearing of "show interface" counters 00:00:28
>>> > ...
>>> > B  Input queue: 1/75/0/111 (size/max/drops/flushes); Total output
>>> drops: 0
>>> > B  Queueing strategy: fifo
>>> > B  Output queue: 0/40 (size/max)
>>> > B  5 minute input rate 5413000 bits/sec, 1900 packets/sec
>>> > B  5 minute output rate 13000 bits/sec, 9 packets/sec
>>> >
>>> > This is a GigE interface (the one connecting to the other 7300, the
>>> > interface where ping drops occour). I see flushes on this interface
>>> > (111 in 28 seconds) although the input rate is low (around 5.4Mbps).
>>> >
>>> > 1 - Could this be where I am loosing packets? (Remeber, this all
>>> began
>>> > because of missing multicast packets)
>>> > 2 - How to fix this?
>>> >
>>> > Persio
>>> >
>>> > On Fri, Jun 10, 2011 at 2:28 PM, Persio Pucci <persio_at_gmail.com>
>>> wrote:
>>> >> 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.
>>> >>>
>>> >>> B 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? B Also, errors on
>>> a physical
>>> >>>>> link would not typically show up as consistent (about every 10
>>> seconds) as
>>> >>>>> the connectivity problem you are describing. B I would look into
>>> what is
>>> >>>>> causing Envmon to spike. B Are you monitoring your temperature,
>>> voltage,
>>> >>>>> and/or power supply status very frequently? B 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 ensur> Blogs and organic groups at http://www.ccie.net
>>>
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