I am looking at my PIX interface counters to see if I have any problems on the interfaces. I notice that some of the interfaces have values in the No buffer, Overrun, Underrun and Dropped packets.
I assume the dropped packets are those dropped due to the firewall rules.
With the no buffer, overrun and underrun I know these are all to do with the PIX and the Interfaces performance. Can someone please explain what is causing these counters and therefore what problem there may be. An example from my worst interface is copied below.
Result of the command: "sh int g0"
Interface GigabitEthernet0 "", is up, line protocol is up
Hardware is i82543 rev02, BW 1000 Mbps
(Full-duplex), 1000 Mbps(1000 Mbps)
Available but not configured via nameif
MAC address 000e.0c2b.b71a, MTU not set
IP address unassigned
65487795 packets input, 18953217272 bytes, 191025 no buffer
Received 17869 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 118436 overrun, 0 ignored, 0 abort
0 L2 decode drops
51933187 packets output, 19223644042 bytes, 0 underruns
0 output errors, 0 collisions
0 late collisions, 0 deferred
input queue (curr/max blocks): hardware (0/0) software (0/0)
output queue (curr/max blocks): hardware (0/255) software (0/0)