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Some problems with L2vpn interworking ethernet to vlan over l2tpv3 on 7600 es20+

Hi all, i've some problems with interworking ethernet to vlan with l2tpv3 on es+..

L2vpn interworking ethernet to vlan over l2tpv3 seems not working if 7600 es20+ performs Ethernet Interworking. It seems that Es20+ doesn’t add vlan tag from pseudowire towards tagged client connected to es20+. Tunnel l2tpv3 is up.

Same configuration with 7200 ( 12.2.SRE) performing Ethernet interworking it’s ok.

Tunnel l2tpv3 between 2800_customer side and 7600-PE

A pc untagged is connected to 2800_cust_side, while a tagged router is connected to gi4/19 of 7600-PE.

7600-PE#sh module

Mod Ports Card Type                             Model            

--- ----- -------------------------------------- ------------------ -----------

1   2 Route Switch Processor 720 (Active)   RSP720-3C-GE      

4   20 7600 ES+                               7600-ES+20G3C 

  

7600 version 12.2.SRE6 or 15.1.3.S3 adv ip services

2800_cust_side (untagged side)

pseudowire-class vlaniw-pw

encapsulation l2tpv3

interworking ethernet

ip local interface Loopback0

!

interface Loopback0

ip addressxx.xx.xx.118   255.255.255.255

!

interface FastEthernet0/1

description vs  Client PC

no ip address

duplex auto

speed auto

no keepalive

xconnect xx.xx.xx.119 333   pw-class vlaniw-pw

!

7600-PE   (tagged side): ver 12.2.33SRE6 or 15.1.3.S3

pseudowire-class vlaniw-pw

encapsulation l2tpv3

interworking ethernet

ip local interface Loopback3

!

interface Loopback3

description per l2tpv3

ip address xx.xx.xx.119   255.255.255.255

mls l2tpv3 reserve interface   GigabitEthernet4/11 GigabitEthernet4/20

!

interface GigabitEthernet4/19.780

encapsulation dot1Q 780

xconnect xx.xx.xx.118 333   encapsulation l2tpv3 pw-class vlaniw-pw

!

Or

interface GigabitEthernet4/19

!

service instance 780 ethernet

description vs 1840_tp

encapsulation dot1q 780

rewrite ingress tag pop 1   symmetric

xconnectxx.xx.xx.118 333   encapsulation l2tpv3 pw-class vlaniw-pw

!

TROUBLESHOOTING on the tunnel:

2800_cust_side (untagged side)

2800_Cust_side#sh l2tun   session all

L2TP Session Information Total   tunnels 1 sessions 1

Session id 2288800623 is up,   logical session id 32870, tunnel id 308305302

Remote session id is 7993, remote tunnel id   2488514968

Locally initiated session

Unique ID is 44

Session   Layer 2 circuit, type is Ethernet, name is FastEthernet0/1

Session vcid is 333

Circuit state is UP

   Local circuit state is UP

   Remote circuit state is UP

…….

2800_Cust_side#sh   l2tun session interworking

L2TP   Session Information Total tunnels 1 sessions 1

LocID     TunID     Peer-address   Type IWrk Username, Intf/

                                                Vcid, Circuit

2288800623   308305302 xx.xx.xx.119   ETH   -   333, Fa0/1

7600-PE   (tagged side): ver 12.2.33SRE6 or 15.1.3.S3

7600-PE#sh l2tun session all

L2TP Session Information Total tunnels 1 sessions 1

Session id 7993 is up, logical session id 65595, tunnel id 2488514968

Remote session id is   2288800623, remote tunnel id 308305302

Remotely initiated session

Unique ID is 17

Session Layer 2 circuit,   type is Ethernet Vlan, name is GigabitEthernet4/19.780:780

Session vcid is 333

Interworking type is Ethernet

Circuit state is UP

   Local circuit state is UP

   Remote circuit state is UP

……

7600-PE#sh   l2tun session interworking

L2TP   Session Information Total tunnels 1 sessions 1

LocID     TunID     Peer-address   Type IWrk Username, Intf/

                                                 Vcid, Circuit

7993       2488514968 xx.xx.xx.118   VLAN ETH   333, Gi4/19.780:780

Please , anyone can help me?

Federica.

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