[j-nsp] QinQ between Cisco/Juniper with layer2-tunneling and VPLS

[Chris Kawchuk]

1. EX4200 - I assume this following:

ethernet-switching-options {
 dot1q-tunneling {
     ether-type 0x8100;
 }
}

vlans {
 My-QinQ-VLAN {
    vlan-id 1000;
    dot1q-tunneling {
        layer2-protocol-tunneling {
            all;
        }
    }
 }
}


2. Note that the EX4200's re-write the MAC Address when using QinQ (i.e. STP MAC 01:80:c2:00:00:00 becomes PVST+ MAC 01:00:0c:cc:cc:cd, for example). Ensure you are un-translating the MAC address at the far end MX or at the Cisco; else you end up with a regular RSTP Packet with the wrong Destination MAC Address.

3. Alternatively, POP the outer Tag on Ingress at the MX; and do the MAC destination re-write there (i.e. change it back to normal) before shoving it into the VPLS.

- Chris.




On 2012-01-25, at 8:23 AM, Sebastian Wiesinger wrote:

> Hi,
> 
> has anyone working QinQ between Cisco and Juniper running over VPLS
> and with working layer2-tunneling? We have a setup like this:
> 
> EX4200 -- QinQ -- MX === VPLS === MX -- QinQ -- Cisco
> 
> We see that on both ends of the QinQ tunnel CTP/STP/LLDP Pakets are
> encapsulated but on the other side nothing gets decapsulated.
> 
> Regards
> 
> sebastian
> 
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