Hi All,

We are having some serious issue with one customer circuit.We are using eompls 
vlan based & we are unable to pass traffic over eompls (l2)tunnel between Cisco 
3550 switches if we use specifically Cisco 6503 ,Cisco 6504 & 6506 etc. If we 
use Cisco switch 6524 instead of Cisco 6503 it is working.

{(Cisco 3550 switch)--->(Cisco 6524)---->(Juniper ACX 4000)---->(Cisco 3550) 
}-->This setup is working.I am able to pass traffic end to end between Cisco 
3550's.

{(Cisco 3550 switch1)--->(Cisco 6503 or Cisco 6506))---->(Juniper ACX 
4000)---->(Cisco 3550 switch2) }-->This setup is not working.

Cisco 3550 switch1 vlan 1089(1.1.1.1/30)---trunk----->sub interface eompls vlan 
1089(Cisco 6503)----->(ACX 4000)terminating tunnel on sub interface vlan 
1089----->Cisco 3550 switch2-trunk-vlan 1089(1.1.1.2/30)

We are using bgp & ospf between Cisco 6503 & Juniper ACX 4000. Vlan 1089  as 
svi we are using on Cisco 3550 switch1 and allowing vlan 1089 as trunk 
connecting back to Cisco 6503,eompls vlan 1089 tunnel is configured on sub int 
on 6503 facing Cisco 3550 switch 1.Cisco 6503 is connected with juniper ACX 
4000 & running bgp & ospf between each other.On ACX 4000 juniper eompls vlan 
based tunnel is terminating on sub interface facing Cisco 3550 switch 2. With 
Sup720 I was unable to pass traffic over tunnels although l2 eompls tunnel 1089 
is up on both (Cisco 6503 & Juniper). See below.


Below are the outputs & commands which i was running.


ACX 4000 Juniper:

chi> show l2circuit connections
Layer-2 Circuit Connections:
Neighbor: 63.250.238.225
    Interface                 Type  St     Time last up          # Up trans
    ge-1/1/0.1089(vc 1089)    rmt   Up     Jan  2 12:45:23 2010           1
      Remote PE: 63.250.238.225, Negotiated control-word: No
      Incoming label: 299776, Outgoing label: 19
      Negotiated PW status TLV: No
      Local interface: ge-1/1/0.1089, Status: Up, Encapsulation: VLAN
chi> show ospf neighbor
Address          Interface              State     ID               Pri  Dead
10.252.0.85      xe-0/2/0.0             Full      63.250.238.225     1    39

chi> show bgp summary
Groups: 1 Peers: 1 Down peers: 0
Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending
inet.0
                      15         13          0          0          0          0
Peer                     AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn 
State|#Active/Received/Accepted/Damped...
63.250.238.225        30373        179        200       0       0     1:21:40 
13/15/15/0           0/0/0/0

show ldp neighbor
Address            Interface          Label space ID         Hold time
63.250.238.225     lo0.0              63.250.238.225:0         40
63.250.250.219     lo0.0              0.0.0.0:0                0
10.252.0.85        xe-0/2/0.0         63.250.238.225:0         11

set interfaces xe-0/2/0 mtu 9192
set interfaces xe-0/2/0 unit 0 bandwidth 10g
set interfaces xe-0/2/0 unit 0 family inet mtu 1546
set interfaces xe-0/2/0 unit 0 family inet address 10.252.0.86/30
set interfaces xe-0/2/0 unit 0 family mpls

set interfaces ge-1/1/0 vlan-tagging
set interfaces ge-1/1/0 mtu 1564
set interfaces ge-1/1/0 media-type copper
set interfaces ge-1/1/0 encapsulation flexible-ethernet-services
set interfaces ge-1/1/0 unit 0 vlan-id 2062
set interfaces ge-1/1/0 unit 0 family inet address 10.254.62.9/29 primary
set interfaces ge-1/1/0 unit 0 family inet address 63.250.226.153/30
set interfaces ge-1/1/0 unit 1089 encapsulation vlan-ccc
set interfaces ge-1/1/0 unit 1089 vlan-id 1089

set protocols mpls interface xe-0/2/0.0
set protocols ospf area 0.0.0.0 interface lo0.0
set protocols ospf area 0.0.0.0 interface xe-0/2/0.0 interface-type p2p
set protocols ospf area 0.0.0.0 interface xe-0/2/0.0 authentication md5 1 key 
"$9$a9JUHf5F6CuZU9puOSyX7-wgJDikqP5ZGtu1IcS"
set protocols ldp interface xe-0/2/0.0 allow-subnet-mismatch

set protocols ldp interface lo0.0
set protocols l2circuit neighbor 63.250.238.225 interface ge-1/1/0.1089 
virtual-circuit-id 1089


ACX 4000 i am using Junos:jinstall-ppc-12.3X54-D27.1-domestic-signed.tgz

Cisco 6503:
Test#show mpls l2transport vc detail
Local interface: Gi2/2.1089 up, line protocol up, Eth VLAN 1089 up
  Destination address: 63.250.250.225, VC ID: 1089, VC status: up
    Output interface: Gi2/1, imposed label stack {299776}
    Preferred path: not configured
    Default path: active
    Next hop: 10.252.0.86
  Load Balance: none
  Flow Label: Disabled
  Create time: 00:05:52, last status change time: 00:03:30
  Signaling protocol: LDP, peer 63.250.250.225:0 up
    Targeted Hello: 63.250.238.225(LDP Id) -> 63.250.250.225, LDP is UP
    Status TLV support (local/remote)   : enabled/not supported
      LDP route watch                   : enabled
      Label/status state machine        : established, LruRru
      Last local dataplane   status rcvd: No fault
      Last local SSS circuit status rcvd: No fault
      Last local SSS circuit status sent: No fault
      Last local  LDP TLV    status sent: No fault
      Last remote LDP TLV    status rcvd: Not sent
      Last remote LDP ADJ    status rcvd: No fault
    MPLS VC labels: local 20, remote 299776
    Group ID: local 0, remote 0
    MTU: local 1546, remote 1546
    Remote interface description:
    Remote VLAN id: 1089
  Sequencing: receive disabled, send disabled
  Control Word: Off (configured: autosense)
  VC statistics:
    transit packet totals: receive 102, send 109
    transit byte totals:   receive 7344, send 7376
    transit packet drops:  receive 0, send 0
!
interface GigabitEthernet2/2.1089
 encapsulation dot1Q 1089
 xconnect 63.250.250.225 1089 encapsulation mpls
!
interface GigabitEthernet2/2
 mtu 1546
 ip address 10.0.59.1 255.255.255.252
!
interface GigabitEthernet2/1
 mtu 1546
 ip address 10.252.0.85 255.255.255.252
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 7 020E01490E151B28431D594A5244
 ip ospf network point-to-point
 logging event link-status
 logging event spanning-tree status
 mpls ip
 no cdp enable

On Cisco 6503 i am using this IOS:s72033-advipservicesk9_wan-mz.122-33.SXJ6.bin

Cisco 3550 swicth1(Output):
interface GigabitEthernet0/11
description facing-Cisco6503
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,100,1089
 switchport mode trunk
 logging event spanning-tree
 no cdp enable
!
interface Vlan1089
 ip address 1.1.1.1 255.255.255.252

Cisco 3550 swicth2(Output):
interface GigabitEthernet0/11
description facing-Juniper-ACX400
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1,100,1089
 switchport mode trunk
 logging event spanning-tree
 no cdp enable
!
interface Vlan1089
 ip address 1.1.1.2 255.255.255.252
!


Any one seen before this type of issue. It would be much appreciated if i get 
any help asap.
Is there any workaround if someone knows?



Thanks & Regards,
Ahsan Rasheed




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