Daniel Holme dan.holme at gmail.com
Fri Dec 16 03:18:28 EST 2011

PW-SPAN appears to be ERSPAN with MPLS instead of GRE. So as long as you're passing traffic between the different platforms without encapsulation then you should be okay. Just don't expect interoperability between the two.

--Daniel Holme

On 15 Dec 2011, at 17:44, Jason Lixfeld <jason at lixfeld.ca> wrote:

> The ASR9k supports only PW-SPAN as a remote SPAN mechanism and my wireshark box happens to be hanging off of a 3550.  That 3550 hangs off of a 7600 and that 7600 hangs off of another ASR9k that would be the PW-SPAN destination for this particular SPAN session.  The connection between the ASR9k and the 7600 is a dedicated connection to try and make this work, so it can be configured any which way.
> So:  ASR1 -[MPLS]- ASR2 -> 7600 -[RSPAN]- 3550 -> Wireshark
> 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?
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