[e-nsp] Problem with MST cisco and extreme switches

[tb]

Hi,

your cisco switch is sending untagged frames and your extreme is sending 
tagged frames.

You have to remove this command:
 switchport trunk native vlan 500

Hope it helps

tregards
Thomas



>  
>
> I am closing a fibre ring with 2 extreme summit 48si/Full L3 and a 
> cisco 2960, i´m tryng to connect using MSTP but I can´t see any 
> packets between extreme switches and catalyst switch, this is the 
> configuration:
>
>  
>
> NODO 2
>
>  
>
> configure vlan "BACKBONE" tag 500     # VLAN-ID=0x1f4  Global Tag 3
>
> configure stpd ALFA1 add vlan "BACKBONE"
>
> configure vlan "BACKBONE" ipaddress 10.240.0.2 255.255.255.224
>
> configure vlan "BACKBONE" add port 49 tagged
>
> configure vlan "BACKBONE" add port 50 tagged
>
>  
>
> enable stpd ALFA1 rapid-root-failover
>
> configure stpd ALFA1 tag 500
>
> configure stpd ALFA1 mode dot1w
>
> configure stpd ALFA1 port link-type point-to-point 49
>
> configure stpd ALFA1 port link-type point-to-point 50
>
> enable stpd ALFA1
>
>  
>
> NODO 3
>
>  
>
> configure vlan "BACKBONE" tag 500     # VLAN-ID=0x1f4  Global Tag 3
>
> configure stpd ALFA1 add vlan "BACKBONE"
>
> configure vlan "BACKBONE" ipaddress 10.240.0.3 255.255.255.224
>
> configure vlan "BACKBONE" add port 49 tagged
>
> configure vlan "BACKBONE" add port 50 tagged
>
>  
>
> enable stpd ALFA1 rapid-root-failover
>
> configure stpd ALFA1 tag 500
>
> configure stpd ALFA1 mode dot1w
>
> configure stpd ALFA1 port link-type point-to-point 49
>
> configure stpd ALFA1 port link-type point-to-point 50
>
> enable stpd ALFA1
>
>  
>
> On cisco switch this is the configuration:
>
>  
>
> spanning-tree mode mst
>
> spanning-tree extend system-id
>
> !        
>
> spanning-tree mst configuration
>
>  name ALFA1
>
>  revision 7
>
>  instance 1 vlan 500
>
> !
>
> vlan internal allocation policy ascending
>
>  
>
> interface GigabitEthernet0/1
>
>  description !!! NODO1-TO-NODO2 !!!
>
>  switchport trunk native vlan 500
>
>  switchport trunk allowed vlan 500
>
>  switchport mode trunk
>
>  switchport nonegotiate
>
>  spanning-tree link-type point-to-point
>
> !
>
> interface GigabitEthernet0/2
>
>  description !!! NODO1-TO-NODO3 !!!
>
>  switchport trunk native vlan 500
>
>  switchport trunk allowed vlan 500
>
>  switchport mode trunk
>
>  switchport nonegotiate
>
>  spanning-tree link-type point-to-point
>
>  
>
> interface Vlan500
>
>  ip address 10.240.0.1 255.255.255.224
>
>  
>
> Extreme Version: Image : Extremeware  Version 7.4.4.9
>
> Cisco Catalyst: Version 12.2(25)SEE2
>
>  
>
> Thanks,
>
>  
>
> ------------------------------------------------------------------------
>
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