RE: Multicast drops

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?
> >
> >   Last clearing of "show interface" counters 00:00:28
> > ...
> >   Input queue: 1/75/0/111 (size/max/drops/flushes); Total output
> drops: 0
> >   Queueing strategy: fifo
> >   Output queue: 0/40 (size/max)
> >   5 minute input rate 5413000 bits/sec, 1900 packets/sec
> >   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.
> >>>
> >>>  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
> 
> 
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