Trunking between Nortel baystack and Cisco

[ruster]

Hello fellow network gods,

I am seeking some advice from anyone who may have come across this requirement. I need to establish an 802.1q trunk between a Cisco catalyst switch, and a nortel baystack 460 unit. Having some issues getting it to work. Has anyone out there ran into this requirement, and hopefully, come up with a resolution.

Any help would be great.

Thanks,

Ruster.

 

[NARBE]

Hello,

The problem is that on a cisco trunk your native vlan is untagged (show interface f0/x switchport to see the native vlan)
You can put as native vlan another one unused (conf t, interface f0/x, switchport trunk native vlan xxx) like that you'll have all your vlan tagged on both sides.

Hope this help.

Regards

 

[ruster]

Why would the native vlan need to be tagged for the trunk to be established. Packets from all allowable vlans on the definded trunk would be tagged with an 802.1q vlan identifier. I would imagine that as long as the allowable vlan list on the Cisco switch match the defined vlans on the trunk on the nortel end, it should work.

Please clarify.

Thanks,

Ruster
CCNP,CCDP,CCEA,CWNA,MCSE

 

[Irina2003]

Try to disable the Spanning Tree. The issue could be that Cisco supports multiple instances of the STP and Nortel only 1 STP per switch.
Hope it hepls!