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Port SPAN

Created by dave. Last edited by dave, 9 years and 111 days ago. Viewed 1,869 times. #1
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Session Monitoring

This is the vocabulary that Cisco uses to describe port mirroring, port monitoring, RMON Roving Port Analysis, whatever.

This example shows how to create SPAN session 1 to monitor both sent and received traffic on a source interface and on a destination interface:

Switch(config)# monitor session 1 source interface fastEthernet0/1 both
Switch(config)# monitor session 1 destination interface fastEthernet0/8

Now plug your snooper into 0/8 and you'll see everything that 0/1 does.

Turning It Off:

Switch(config)# no monitor session 1

(>>Source)

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This is a collection of techical information, much of it learned the hard way. Consider it a lab book or a /info directory. I doubt much of it will be of use to anyone else.

Useful:


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