[j-nsp] Layer 2 circuit - Traffic not flowing between Cisco and Juniper with mismatched VLAN ID

[sthaug at nethelp.no]

> I ve tried all of the recommended options provided but it did not work out,
...
> if the VLAN ID are same on both Cisco and Juniper, traffic is passing
> through but with different VLAN ID, traffic is not...
> 
> Steinar - when you said, pseudowire working fine between cisco and juniper,
> did you mean even with different VLAN ID.. in our network we only have same
> VLAN ID if the pseudowire is built between cisco and juniper...

Known working example with different VLAN IDs at each end, corresponding
to your option 3 at the Juniper end. Equipment is 12K / IOS 12.0(32)SY
and MX / JunOS 10.4:

interface GigabitEthernet7/0/0
 mtu 4470
 no ip address

interface GigabitEthernet7/0/0.24701423
 encapsulation dot1Q 247
 xconnect 10.0.0.1 68790300 encapsulation mpls

interfaces {
    ge-1/0/0 {
	flexible-vlan-tagging;
	mtu 4488;
	encapsulation flexible-ethernet-services;
        unit 1084 {
	    encapsulation vlan-ccc;
            vlan-id 1423;
            input-vlan-map {
                swap;
                vlan-id 247;
            }
            output-vlan-map swap;
        }
    }
}

protocols {
    l2circuit {
        neighbor 10.0.0.2 {
            interface ge-1/0/0.1084 {
                virtual-circuit-id 68790300;
		no-control-word;
                mtu 4470;
            }
        }
    }
}

Steinar Haug, Nethelp consulting, sthaug at nethelp.no