[c-nsp] Pause Output on interface...

[Andriy Bilous]

int g0/1
 flow send off
 flow rec off

On Fri, Oct 12, 2012 at 9:05 PM, Jonathan Charles <jonvoip at gmail.com> wrote:
> We have a Cisco 2921 running 15.2(3T);
>
> We are seeing PAUSE OUTPUT incrementing on the device, and every time it
> does, our users experience pretty nasty jitter and silence on VOIP calls.
>
> The link is 1000BaseLX with a 100MB committed rate; we rarely see more than
> 10-15MB of output or input traffic on the interface.
>
> Two questions:
>
> 1 - Who is originating the Pause Outputs? Cisco documentation is silent on
> the subject and TAC has given us conflicting answers.
> 2 - If generated locally, how can we stop them from doing so? The provider
> is saying these are causing the issues we are experiencing.
>
>
> ROUTER#sh int gi0/1
> GigabitEthernet0/1 is up, line protocol is up
>   Hardware is CN Gigabit Ethernet, address is 2894.0fbd.0091 (bia
> 2894.0fbd.0091)
>   MTU 1500 bytes, BW 100000 Kbit/sec, DLY 10 usec,
>      reliability 255/255, txload 13/255, rxload 17/255
>   Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
>   Keepalive set (10 sec)
>   Full Duplex, 1Gbps, media type is LX
>   output flow-control is XON, input flow-control is XON
>   ARP type: ARPA, ARP Timeout 04:00:00
>   Last input 00:00:00, output 00:00:00, output hang never
>   Last clearing of "show interface" counters 16:53:34
>   Input queue: 1/4096/0/1204 (size/max/drops/flushes); Total output drops: 0
>   Queueing strategy: Class-based queueing
>   Output queue: 0/1000/0 (size/max total/drops)
>   30 second input rate 6684000 bits/sec, 3871 packets/sec
>   30 second output rate 5105000 bits/sec, 2906 packets/sec
>      87183773 packets input, 3179860385 bytes, 0 no buffer
>      Received 0 broadcasts (0 IP multicasts)
>      0 runts, 0 giants, 0 throttles
>      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
>      0 watchdog, 0 multicast, 0 pause input
>      60076680 packets output, 4290590647 bytes, 0 underruns
>      0 output errors, 0 collisions, 0 interface resets
>      0 unknown protocol drops
>      0 babbles, 0 late collision, 0 deferred
>      0 lost carrier, 0 no carrier, 1252219 pause output
>      0 output buffer failures, 0 output buffers swapped out
> ROUTER#
>
> Thanks!
>
>
>
> Jonathan
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