[c-nsp] OutDiscards (ME3600X)

Christian plymouth78 at googlemail.com
Thu Dec 15 05:06:06 EST 2011

Hi Waris,

2011/12/15 Waris Sagheer (waris) <waris at cisco.com>

> Christian,
> Are you experiencing any microburst? What is the egress or NNI link?

I'am not sure how I could figure out if there are any microburst. I'am
seeing those OutDiscards
on nearly any 100Mb Link configured in this ME3600X network.

I could try to collect the SNMP-Counters really fast to get more
information if microbursts are
happening. But at the moment I'am solely using the "load-interval 30" on
those interfaces to figure
the rates out - they are the whole time below 1Mbps.

Egress are other ME3600X connected, interface configuration is like this:
interface GigabitEthernet0/3
 no switchport
 mtu 1960
 ip address x.x.x.x y.y.y.y
 no ip redirects
 no ip proxy-arp
 ip router isis
 ip pim query-interval 1
 ip pim sparse-mode
 load-interval 30
 carrier-delay msec 0
 mpls ip
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 isis network point-to-point
 ip rsvp bandwidth
#sh int g0/3
GigabitEthernet0/3 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is 64a0.e71c.61c2 (bia
  Internet address is x.x.x.x/30
  MTU 1960 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Carrier delay is 0 msec
  Full-duplex, 100Mb/s, media type is T
  input flow-control is off, output flow-control is unsupported
  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 00:27:55
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 413
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 57000 bits/sec, 38 packets/sec
  30 second output rate 169000 bits/sec, 41 packets/sec
     81486 packets input, 24024890 bytes, 0 no buffer
     Received 2551 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 2551 multicast, 0 pause input
     0 input packets with dribble condition detected
     94027 packets output, 63805492 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, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

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