Re: Multicast drops

hi all,

just for some feedback, it looks like I have this resolved for now.

I have disabled SPD on ALL my routers from the multicast source up to
the switch where I deliver the multicast streams to my customers. Also
I have tweaked outbound/inbound (one-way) buffers towards the
multicast receivers to assure packets would not be dropped on this
direction.

Thank you all for your input and help!

On Fri, Jun 10, 2011 at 7:40 PM, Marko Milivojevic <markom_at_ipexpert.com> wrote:
> Do you have CEF running?
>
> --
> Marko Milivojevic - CCIE #18427
> Senior Technical Instructor - IPexpert
>
> FREE CCIE training: http://bit.ly/vLecture
>
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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?
>>>> >
>>>> > 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 ensur> Blogs and organic groups at http://www.ccie.net
>>>>
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Received on Mon Jun 13 2011 - 12:00:44 ART