Cisco to 3com vlan

[wilson2468]

I am trying to trunk sever 3com switches to a cisco 4503.

I have searched the forums and have done what was said and it still doesn't work.

I have:

3Com:
Created the additonal vlan (vlan2).
Set port one to be a member of both vlans.
On port one, vlanvl is untagged (native) and vlan2 is tagged (802.1Q).
All other vlan1 ports are untagged.
All other vlan2 ports are untagged.

Cisco 4503
Created the additional vlan and given it ip address.
Made it a trunk port.
Made vlan1 native vlan.
Allowed both vlans on the trunk.


On the Cisco the vlan is up/up, but I cannot pass traffic on vlan 2.
I have given the vlan a differnet name on the Cisco, but I don't think this matters

Have I missed something?

 

[avilov]

did you set
switchport trunk encapsulatiom dot1q
on a trunk port on cisco?

also I would create another vlan on booth devices instead of using vlan1