Re: OT:802.1q trunking between Cisco 4507 and Nortel baystack

["Brad Kessler" <bkessler@xxxxxxxxxxxxxxxxx>]

never done this with nortel but do it with foundry all of the time.  First 
and fore most you have to force the trunk mode on the Cisco box to "on".  
Second on the Nortel box you need to make the port that connects to the 
Cisco box force to trunk "ON" and make that port a "Tagged" member of all of 
the vlans that you are trying to trunk across.  Are you using just one port 
or are you trying to aggregate ports between the switches.  In the case that 
you are, you will need to use LACP aggregation and not cisco etherchannel 
(PAGP) nortel will not support the proprietary protocol.  Hope this helps... 

-Brad Kessler 


Murali Rao writes: 

> Guys,
> Can some one guide me to get dot1q trunk between a cat4507
> and nortel baystack 450T to work?
> I have configured 2 vlans(untagged members) on nortel box
> and getting a 4507 to route between these 2 vlans. The
> 802.1q trunk is shown as up and trunking on cisco switch
> but am not able to get the routing between these two vlans
> in place. 
>
> Cisco config:
> interface FastEthernet3/27
>  description link to switch f07
>  switchport trunk encapsulation dot1q
>  switchport mode trunk
>  load-interval 30
> interface Vlan1
>  ip address 172.16.100.1 255.255.255.0
> !
> interface Vlan20
>  ip address 172.16.20.10 255.255.255.0
> !
> interface Vlan21
>  ip address 172.16.21.10 255.255.255.0
> ----------------------------------------------- 
>
> L3#sh int fa3/27 trunk 
>
> Port      Mode         Encapsulation  Status        Native
> vlan
> Fa3/27    on           802.1q         trunking      1 
>
> Port      Vlans allowed on trunk
> Fa3/27    1-4094 
>
> Port      Vlans allowed and active in management domain
> Fa3/27    1,20-21,1002-1005 
>
> Port      Vlans in spanning tree forwarding state and not
> pruned
> Fa3/27    1,20-21,1002-1005 
>
> ----------------------------------------------------- 
>
>
> Any help is highly appreciated. 
>
> Thanks
> Murali 
>
>  
>
>  
>
>  
>
> __________________________________
> Do you Yahoo!?
> Free Pop-Up Blocker - Get it now
> http://companion.yahoo.com/ 
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com 
>
> Subscription information may be found at: 
> http://www.groupstudy.com/list/CCIELab.html