Show interface counters detail command

[bruce.porter]

I have a 4506 with sup IV. I do a show interface counters detail (command not shown anywhere on Cisco?s web site.)

Unfortunately my counter values don't line up well in this post, but there are many buffer errors and it looks like I am using several queues, 1, 3, 4?

Can anyone explain these counters? thx

I get Rx-No-Pkt-Buff counts. What do these counters mean. I see that almost all traffic is hardware switched.

I also get TxPauseFrames counts.

Uplink:

The uplink is trying to pause traffic. G2/1

Port Rx-No-Pkt-Buff RxPauseFrames TxPauseFrames PauseFramesDrop

Gi2/1 0 45026858 0 0

Gi2/11 2380 0 1483 0

Gi2/12 4224 0 2753 0

Gi2/13 1552 0 986 0

Gi2/14 4616 0 3037 0

Gi2/15 2490 0 1590 0

Gi2/16 4986 0 3275 0

And I get these values:

Port Tx-Bytes-Queue-1 Tx-Bytes-Queue-2 Tx-Bytes-Queue-3 Tx-Bytes-Queue-4

Gi1/2 0 0 0 0

Gi2/1 641243531215 0 19938432 886948257

Gi2/2 20306248036 0 13910080 851181672

Gi2/3 5851325376 0 14044608 874367506

[glen.grant · Accepted solution]

Sounds like at times certain ports are trying to pass more data than the switchport can handle . Each port has queues and these are used to set things like QOS when you are using ip phones . Unless you have set qos then it just runs in the default mode .

[bruce.porter]

You are probably right. I am probably over running the Tx and Rx buffers and also using all the queues, even though I don't run any QOS. Thanks for taking the time.

The Issue probably stems from using Broadcom NICs in a diskless boot situation. You seem to need to turn off NIC gigabit flow control to prevent the cards from hanging when booting off the LAN. It seems that they really need the flow control though. Some more investigation needs to be done. Thanks again.