Peter Rathlev peter at rathlev.dk
Thu Dec 15 15:26:26 EST 2011

On Thu, 2011-12-15 at 12:44 -0500, Jason Lixfeld wrote:
> Let's assume I setup a PW-SPAN session between ASR1 and ASR2 and drop
> the PW-SPAN off on the interface connected to the 7600.  Can I just
> simply make the 7600 side a SPAN source interface with the destination
> being the RSPAN VLAN towards the 3550 and off towards my Wireshark
> box?  Too simplistic to come even close to working properly?

My guess is that this would work, though I don't really know the ASR
platform or what PW-SPAN actually is. I'm assuming the PW-SPAN
destination interface is a plain physical interface on the 7600 side.

We've previously used something similar with ERSPAN instead of PW-SPAN.

You could also use an ERSPAN session on the 7600 toward the wireshark
machine if you have IP reachability between them.


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