Re: Multicast drops

I don't think the CPU is high enough for that. It never goes beyond 20% :/

On Fri, Jun 10, 2011 at 3:55 PM, David Prall <dcp_at_dcptech.com> wrote:
> If you disable SPD, then you will end up having higher CPU load, and they
> just become interface drops which could include the control plane traffic. I
> can see the Ping's being dropped because of SPD, they aren't control-plane
> traffic. What all are you polling every minute, I would think this would
> lead to high cpu.
>
> David
>
> --
> http://dcp.dcptech.com
>
>
>> -----Original Message-----
>> From: Persio Pucci [mailto:persio_at_gmail.com]
>> Sent: Friday, June 10, 2011 2:44 PM
>> To: David Prall
>> Cc: ccielab_at_groupstudy.com
>> Subject: Re: Multicast drops
>>
>> 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 Fri Jun 10 2011 - 17:13:05 ART