After I upgraded my IOS this morning I’ve seen 13,844 input errors on the port; when looking at the switch the router is connected to I see that a very similar number of multi-cast packets (13,423).
Has anyone else seen this? Is this perhaps what the patch does (register exploit packets as input errors)?
FastEthernet0/0 is up, line protocol is up
Hardware is DEC21140A, address is 0002.1723.0800 (bia 0002.1723.0800)
Internet address is 199.185.131.249/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 106/255, rxload 118/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
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: 0/75/53/231 (size/max/drops/flushes); Total output drops: 733
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 46298000 bits/sec, 9642 packets/sec
5 minute output rate 41710000 bits/sec, 8891 packets/sec
163709405 packets input, 2006456215 bytes
Received 11374 broadcasts, 0 runts, 0 giants, 2 throttles
13844 input errors, 0 CRC, 0 frame, 0 overrun, 13182 ignored
0 watchdog
0 input packets with dribble condition detected
157777703 packets output, 1121349334 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
FastEthernet8 is up
Hardware is FastEthernet, address is 00e0.5202.4613 (bia 00e0.5202.4613)
Configured speed 100Mbit, actual 100Mbit, configured duplex fdx, actual fdx
Member of L2 VLAN ID 1, port is untagged, port state is FORWARDING
STP configured to OFF, priority is high, flow control enabled
mirror disabled, monitor disabled
Not member of any active trunks
Not member of any configured trunks
No port name
5 minute input rate: 43045336 bits/sec, 8985 packets/sec, 44.47% utilization
5 minute output rate: 46621104 bits/sec, 9711 packets/sec, 48.16% utilization
689714869 packets input, 3817420687 bytes, 0 no buffer
Received 4493 broadcasts, 0 runts, 0 giants
5 input errors, 5 CRC, 0 frame, 0 ignored
13423 multicast
736196013 packets output, 1836390208 bytes, 0 underruns
0 output errors, 0 collisions