[c-nsp] Protocol Errors

[Paul Stewart]

Anyone clue me in as to why we would be getting so many drops, especially
"unknown protocol"?

dis1-rtr-pt#sh interfaces GigabitEthernet 0/3
GigabitEthernet0/3 is up, line protocol is up
  Hardware is BCM1250 Internal MAC, address is 0018.1864.9b19 (bia
0018.1864.9b19)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 2/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is force-up, media type is SX
  output flow-control is unsupported, 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 never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 632540
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 4177000 bits/sec, 1901 packets/sec
  5 minute output rate 9342000 bits/sec, 2144 packets/sec
     1373004007 packets input, 508264658119 bytes, 0 no buffer
     Received 4501821 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 8561621 multicast, 0 pause input
     0 input packets with dribble condition detected
     1529166382 packets output, 946856618633 bytes, 0 underruns
     3 output errors, 0 collisions, 5 interface resets
     408856 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     3 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out


This is on a 7206VXR router - the 0/3 interface has several subinterfaces
including a PPPOE interface as well.....

Thanks,
Paul