You need an OSM+ module on 7600 as the uplink to the MPLS core for VPLS.
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/cfgnotes/optical/122sx/mpls.htm#1231075
Sample Cfg
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, 12.2SX
VPLS Configuration Example
Configuration on PE 1
This shows the creation of the virtual switch instances (VSIs) and associated VCs.
l2 vfi PE1-VPLS-A manual
vpn id 100
neighbor 2.2.2.2 encapsulation mpls
neighbor 3.3.3.3 encapsulation mpls
!
Interface loopback 0
ip address 1.1.1.1 255.255.255.255
This configures the CE device interface (there can be multiple L2 interfaces in a VLAN).
Interface fastethernet0/0
switchport
switchport mode dot1qtunnel
switchport access vlan 100
!
Here the attachment circuit (VLAN) is associated with the VSI.
Interface vlan 100
no ip address
xconnect vfi PE1-VPLS-A
!
This is the enablement of the L2 VLAN instance.
vlan 100
state active
