May 2011
Intermediate to advanced
788 pages
23h 34m
English
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Monitoring QoS
You monitor queues primarily through a couple of simple commands. The output
of these commands contains a lot of information, so I’ll explain what you
need to look for. First, run the show interface
command:
R1#sho int s0/1
Serial0/1 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 192.168.1.1/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 21/255, rxload 22/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 5d04h
Input queue: 2/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/4/256 (active/max active/max total)
Reserved Conversations 2/2 (allocated/max allocated)
Available Bandwidth 1030 kilobits/sec
5 minute input rate 134000 bits/sec, 53 packets/sec
5 minute output rate 131000 bits/sec, 53 packets/sec
22874566 packets input, 2838065420 bytes, 0 no buffer
Received 52348 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
22964396 packets output, 2678320888 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=upThe output indicates that the queuing strategy is weighted fair. We’re using low-latency ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.