How to span port on WS-C3750G-48TS

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May 21st, 2007
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I want to monitor a port on this switch (gig 1/0/9) to port 1/0/48. I don't seem to have the option.


WS-C3750G-48TS 12.2(25)SEE C3750-IPBASEK9-M


nj34ex07e2s41b(config)#port ?

load-balance Load Balancing metho





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Correct Answer by CSCO10892433 about 10 years 1 week ago

Hi, bedevere


The correct command to use is "monitor session" under configuration mode.


Here is a configuration guide from cisco site.


http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12225sea/3750scg/swspan.htm


HTH

SSLIN

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Anand Narayana Mon, 05/21/2007 - 20:29
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Hi,

"monitor session" is the command which you where exactly looking in for.

Amit Singh Mon, 05/21/2007 - 20:30
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  • Cisco Employee,

Hello,


You are using a wrong command to setup the monitor session on the 3750 switches. The command that you are trying to use was used on earlier 3500XL switches. 3750 switches has different set of commands for port montioring. Do the folloiwng:


Config t

monitor session source interface gig 1/0/9 - 1/0/48 both <-- there is a spance between the port ranges and the - sign


montior session destination interface gig 1/0/x <- X is the port number where montior PC is connected.


Please see the link below for more information and command refrences..


http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12235se/scg/swspan.htm


HTH,Please rate if it does.


-amit singh

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