how we check port utilization on catos

Answered Question
Sep 23rd, 2008
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Hi all,


i have catos switch i ran the command

sh port mac 9/48


Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast

-------- -------------------- -------------------- --------------------

9/48 46702532374 694221 55075


Port Xmit-Unicast Xmit-Multicast Xmit-Broadcast

-------- -------------------- -------------------- --------------------

9/48 11729196288 117431127 150719929


Port Rcv-Octet Xmit-Octet

-------- -------------------- --------------------

9/48 66986961151708 2070590901631


MAC Dely-Exced MTU-Exced In-Discard Out-Discard

-------- ---------- ---------- ---------- -----------

9/48 0 0 0 0


Port Last-Time-Cleared

----- --------------------------

9/48 Thu Nov 15 2007, 12:24:53

is this right command to check amount of traffic on switch port?


thanks

Correct Answer by glen.grant about 8 years 7 months ago

70% is pretty busy but a switch port should be ok at that level . Anything above like 90% we have seen where packets start getting dropped.

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glen.grant Tue, 09/23/2008 - 07:15
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That is the collective stats, if you want an up to date count then clear the counters and take a look .

mahesh18 Tue, 09/23/2008 - 07:17
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Hi glen

i clear the counters.

it is exchange server connected to this port

here are stats

sh port mac 9/48


Port Rcv-Unicast Rcv-Multicast Rcv-Broadcast

-------- -------------------- -------------------- --------------------

9/48 41288 1 0


Port Xmit-Unicast Xmit-Multicast Xmit-Broadcast

-------- -------------------- -------------------- --------------------

9/48 2 157 404


Port Rcv-Octet Xmit-Octet

-------- -------------------- --------------------

9/48 42715784 38774


MAC Dely-Exced MTU-Exced In-Discard Out-Discard

-------- ---------- ---------- ---------- -----------

9/48 0 0 0 0


Port Last-Time-Cleared

----- --------------------------

9/48 Tue Sep 23 2008, 10:15:58


pciaccio Tue, 09/23/2008 - 07:30
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On a CatOS system try the command show topn. This command provides to you the top talkers of the switch. You can set some switches on the command that allow you to extend the capture length or look at errors or packet counts. This command is helpful for seeign who the top tsalkers are and what kind of utilization they are using...

mahesh18 Tue, 09/23/2008 - 07:43
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Hi

i did the command sh top util

as sh topn did not work

sh top util

Start Time: Sep 23 2008 10:41:54

End Time: Sep 23 2008 10:42:24

PortType: all

Metric: util

Port Band- Uti Bytes Pkts Bcst Mcst Error Over

width % (Tx + Rx) (Tx + Rx) (Tx + Rx) (Tx + Rx) (Rx) flow

----- ----- --- -------------------- ---------- ---------- ---------- ----- ----

1/1 1000 11 866515581 1039104 760 1955 0 0

9/22 a-1Gb 2 213815639 205348 305 112 0 0

9/1 a-1Gb 2 194193335 213480 763 1930 0 42

3/14 1000 2 192450363 185755 760 1953 0 0

9/7 a-1Gb 2 159760655 166252 763 1916 0 0

9/3 a-1Gb 0 65173959 77697 763 1928 0 0

3/4 1000 0 54380375 73219 344 1272 0 0

9/48 1000 0 49921006 65916 305 112 0 0

3/1 1000 0 37839835 50277 760 1955 0 0

3/16 1000 0 33994397 128503 760 1951 0 0

9/47 1000 0 16428714 19363 305 112 0 0

3/5 1000 0 13029283 64327 415 689 0 0

9/19 a-1Gb 0 6800024 38047 305 112 0 0

3/2 1000 0 4260454 16028 759 1955 0 0

6/42 a-100 0 173404 2211 305 114 0 0

9/13 a-1Gb 0 888480 4290 763 1932 0 0

9/42 a-1Gb 0 635077 3104 32 26 0 0

4/25 a-10 0 2938 44 19 25 0 0

6/8 100 0 36143 476 304 106 0 0

6/38 a-100 0 18795 148 27 53 0 0

here it shows port 1/1 utilization is 11 %

is that ok.

so utilization show here is bases on port??

glen.grant Tue, 09/23/2008 - 08:18
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Yes you can use that but it will only show the top 20 ports as far as utilization .

mahesh18 Tue, 09/23/2008 - 09:13
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Hi Glen,


So it shows top 20 port utilization on switch .

so what is considered high port utilization anything begger han 70%?


Correct Answer
glen.grant Tue, 09/23/2008 - 09:23
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70% is pretty busy but a switch port should be ok at that level . Anything above like 90% we have seen where packets start getting dropped.

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