09-02-2010 07:51 AM - edited 03-06-2019 12:47 PM
Hello,
I'm confused with rspan.
The task.
Send mirrored traffic from sw2 to the sensor connected to sw3 through sw1. The issue is that sw1 have been already configured to act as source for rspan.
Here is the scheme:
endpoints to be monitored 2
|
trunk
|
[[[sw2 cat3750]]]
|
trunk
|
[[[sw1 cat4507]]]---endpoints that are already monitored
|
trunk
|
[[[sw3 cat4503]]]--sensor
Just now, traffic from sources connected to sw1 is sending via rspan to sensor sw1-->sw3. It works pretty fine.
Can I just add rspan as a remote source on sw2?
==on sw2==
vlan 1000
remote-span
monitor session 1 source interface <list>
monitor session 1 destination remote vlan 1000
==on sw1==
--------here is already working rspan config
monitor session 2 source interface <list>
monitor session 2 destination remote vlan 1000
==on sw3==
--------here is already working rspan config
monitor session 2 destination interface Gi2/18
monitor session 2 source remote vlan 1000
09-02-2010 08:11 AM
Hello Maxim,
you would need a second RSPAN session to be on the safe side as RSPAN vlan disables mac address learning
Hope to help
Giuseppe
09-02-2010 08:45 AM
Thank you for reply.
As I understand you have proposed to create new rspan session with a new vlan on sw2 and simply carry this new vlan through sw1 to sw3.
I also thought to do it in the same way.
But on sw3 (cat4503) it's not possible to create monitor sessions with 2 or more rspan sources.
New monitor on the sw3 session for a new rspan vlan is not a solution, because destination interface have been already configured in another session.
May be I'm not clearly understand your answer?
I'm thinking about direct connection of the sw2 to the sw3 and distributing vlan 1000 (existed rspan vlan) accros the triangle but I'm afraid of network loops.
09-03-2010 01:32 AM
Hello!
I've just added additional session on sw2 and all works fine.
May be this trick is no correct but it works
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide