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SPAN

orama
Cisco Employee
Cisco Employee

just a quick clarification on SPAN, I ran into a debate with a colleague.

Span has two ports, destination and source.

Does the destination port need to have a network analyzer attached to it or can I have my network analyzer attached  in a random port  different than source and destination but in the same switch?

 

 

2 Replies 2

johnd2310
Level 8
Level 8

Hi,

Analyser goes into the destination port.

 

Thanks

John

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etoromol
Cisco Employee
Cisco Employee

Hi,

 

Based on the original design and logic of the application, it is not possible to have the capture attached into a different port from the one you specify as the destination interface. You can source from a VLAN interface (attached to multiple interfaces), however with SPAN the destination is always a single interface, where the capture should be attached.

 

Regards.