RSPAN only forwards broadcast traffic

[pehi]

Hello all,


I have configured an RSPAN monitoring session on a 2950 switch. I have configured a remote-span VLAN from the VTP server switch, and checked on my monitoring source switch (VTP client in the domain) that the VLAN shows up as a remote-span VLAN.


I have configured the reflector port on the client, and the destination port and source remote-vlan on the server.


No matter what VLAN I assign to the destination port - remote-span VLAN, vlan of the monitored source-port, no VLAN id at all, I only get Broadcast and multicast traffic forwarded to my monitor (wireshark).


I've seen various discussions of this over the last coupe of years, but no definitive answe (e.g.

https://supportforums.cisco.com/message/544295#147017)

Has anyone got any further thoughts?


Many thanks,

 

[lerdalt]

Can you post some snippets of the config you have setup? I've done this several times on 2950's and haven't had any issues.

One thing that does usually catch me is if you are not allowing the rspan vlan across your trunks.