Hey all,
I'm working through the advanced technologies videos and trying to lab and verify things as I go. I had a question regarding something I think is strange. I've read documentation that states that in the output of a 'show policy-map interface', its' to be read as:
Class-map: TELNET (match-all)
79 packets, 4447 bytes- Increments regardless if congestion is there or not, provided packets match
5 minute offered rate 0 bps, drop rate 0 bps
Match: protocol telnet
Queueing
Output Queue: Conversation 265
Bandwidth 2500 (kbps)Max Threshold 64 (packets)
(pkts matched/bytes matched) 10/606- Increments only if there is congestion or if the traffic is process switched
(depth/total drops/no-buffer drops) 0/0/0
So I assumed I could check some production routers in our environment to determine if congestion is occuring. So we have several 3900 series routers running 15.1(4)M6. However, when I do a 'show policy-map int' on an interface with a policy, the (pkts output/bytes output) 19494240/1440283371 on all queues increments steadily. (I also am not sure why the difference in syntax there, assuming IOS version). The txload on the interface the max I've seen is 25/255 and it just doesn't seem to be pushing that much traffic. It appears CEF is enabled and running on the interface, so are there any other reasons I'd see that counter incrementing? I was hoping that was a good indication of if congestion is occuring or not, but it doesn't appear to be.
Thanks for any help, sorry if that's not clear in the description, but hopefully that makes sense.
Jared