[c-nsp] trunks, vlans and a metroLAN

[Mark Kent]

I've got the following scenario:

a) a 7201 with a trunk to a 4948

b) a metroLAN from that 4948 to a 6509

c) a 7206/npe-g2 with a trunk to that 6509

I need the 7201 to be layer3-connected to the 7206.

I can't get it to work.  This is what I have:

The 7201:

interface GigabitEthernet0/1.90
 encapsulation dot1Q 90
 ip address 192.0.2.56 255.255.255.254

and

The 4948 trunk port to the 7201:

interface GigabitEthernet1/1
 description TRUNK to c7201-1 router port 0/1
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 87,90
 switchport mode trunk

The 4948 port for the metrolan:

interface GigabitEthernet1/48
 description metroLAN to c6509 g5/2
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 90
 switchport mode trunk

The 6509 port for the metrolan:

interface GigabitEthernet5/2
 description metroLAN to c4948 port 1/48
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 90
 switchport mode trunk

The 6509 port to the 7206:

interface GigabitEthernet3/1
 description TRUNK to c7206 router port 0/3
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 78,90
 switchport mode trunk

And the 7206/NPE-G2:

interface GigabitEthernet0/3.90
 encapsulation dot1Q 90
 ip address 192.0.2.57 255.255.255.254

Now, I've also tried it with the ports on each end of the metroLAN
configured not as trunks, but simply like this:

interface GigabitEthernet1/48
 description metroLAN to c6509 g5/2
 switchport access vlan 90

and

interface GigabitEthernet5/2
 description metroLAN to c4948 port 1/48
 switchport access vlan 90

but with no luck.

What gives?  Do I really need the cooperation of the metroLAN
provider to make this work?

Thanks,
-mark