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Create span port on Cisco Catalyst 3500

Posted on 2006-06-16
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Last Modified: 2008-02-26
Greetings,

Can someone assist me with creating a span port on a Cisco Catalyst 3500?

Thanks in advance for your help.

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Question by:g000se
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9 Comments
 
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Assisted Solution

by:naveedb
naveedb earned 880 total points
ID: 16924076
Telnet to the switch

You will need the port you want to enable span on. Do show interface to find the port number if you don't know. In following example we are assuming it is port fa 0/2 which will be monitoring port fa 0/5


enable
config term
interface fa 0/2
port monitor fa 0/5
end

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Naser Gabaj earned 880 total points
ID: 16924154
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Expert Comment

by:Naser Gabaj
ID: 16924172
g000se

lol:) Sorry It was mistyping, I mean you when i post my answer.
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by:g000se
ID: 16924443
thanks for your input
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by:g000se
ID: 16924449
what does spanning mean or do?  For example if I span the port that means I can use it to monitor the other ports?
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Expert Comment

by:Naser Gabaj
ID: 16924630
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by:g000se
ID: 16926940
thanks.  i use some of those too.  I was wondering to get more of a deeper understanding.  thanks.
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Assisted Solution

by:rvthost
rvthost earned 240 total points
ID: 16926959
Hi g000se, looking for a deep understanding or a simple breakdown?  Basically, by spanning a port, it allows you to plug in a packet analyzer into one port for example, and see all the traffic to/from the other port that you are specifically monitoring.
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by:g000se
ID: 16970689
Thanks. rythost for the information.

Thank you all for assisting me with the question posted.
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