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EoMPLS Vlan Mode

Static, RIP, EIGRP, OSPF, BGP, IBGP, IS-IS and any other routing.

EoMPLS Vlan Mode

Postby Guest » Wed Apr 07, 2010 11:53 am

Hi

 

I am trying to setup EoMPLS Vlan mode between an ASR9K and a 3825 that is connected as back to back PEs.

Although I managed to get the PW Tunnel up no data passed between the edge devices.

 

7200Edge1-----(ASR9K-PE1)----------(3800-PE2)-------(3800Edge2)

 

Please advise me on how to fix this.

 

These are the PE1 and PE2 configs

 

PE1

 

hostname ASR9K-PE1

interface GigabitEthernet0/0/0/17
cdp
mtu 1514
!
interface GigabitEthernet0/0/0/17.10 l2transport
encapsulation dot1q 10

!

!
l2vpn
pw-class test
  encapsulation mpls
   transport-mode vlan
  !
!
xconnect group TEST
  p2p test
   interface GigabitEthernet0/0/0/17.10
   neighbor 10.30.0.21 pw-id 7
    pw-class test

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

PE2

 

hostname 3800-PE2

pseudowire-class test
encapsulation mpls

!

interface GigabitEthernet0/1
mtu 1504
no ip address
duplex auto
speed auto
media-type rj45
!        
interface GigabitEthernet0/1.10
encapsulation dot1Q 10
xconnect 10.30.0.16 7 pw-class test

!

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

PE1

sh l2vpn xconnect group TEST det
Thu Mar 10 12:37:41.910 UTC

Group TEST, XC test, state is up; Interworking none
  AC: GigabitEthernet0/0/0/17.10, state is up
    Type VLAN; Num Ranges: 1
    VLAN ranges: [10, 10]
    MTU 1504; XC ID 0x840002; interworking none
    Statistics:
      packets: received 1125, sent 1081
      bytes: received 101040, sent 95790
      drops: illegal VLAN 0, illegal length 0
  PW: neighbor 10.30.0.21, PW ID 7, state is up ( established )
    PW class test, XC ID 0x840002
    Encapsulation MPLS, protocol LDP
    PW type Ethernet VLAN, control word disabled, interworking none
    PW backup disable delay 0 sec
    Sequencing not set

      MPLS         Local                          Remote                       
      ------------ ------------------------------ -----------------------------
      Label        16003                          16                           
      Group ID     0x4000540                      0x0                          
      Interface    GigabitEthernet0/0/0/17.10     unknown                      
      MTU          1504                           1504                         
      Control word disabled                       disabled                     
      PW type      Ethernet VLAN                  Ethernet VLAN                
      VCCV CV type 0x2                            0x2                          
                   (LSP ping verification)        (LSP ping verification)      
      VCCV CC type 0x6                            0x2                          
                   (router alert label)           (router alert label)         
                   (TTL expiry)                                                
      ------------ ------------------------------ -----------------------------
    MIB cpwVcIndex: 0
    Create time: 10/03/2011 08:49:09 (03:48:31 ago)
    Last time status changed: 10/03/2011 10:15:38 (02:22:02 ago)
    Statistics:
      packets: received 1081, sent 1125
      bytes: received 95790, sent 101040

 

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

PE2

sh mpls l2transport vc detail
Local interface: Gi0/1.10 up, line protocol up, Eth VLAN 10 up
  Destination address: 10.30.0.16, VC ID: 7, VC status: up
    Output interface: Gi0/0, imposed label stack {16003}
    Preferred path: not configured 
    Default path: active
    Next hop: 10.0.6.2
  Create time: 02:46:12, last status change time: 02:23:06
  Signaling protocol: LDP, peer 10.30.0.16:0 up
    MPLS VC labels: local 16, remote 16003
    Group ID: local 0, remote 67110208
    MTU: local 1504, remote 1504
    Remote interface description: GigabitEthernet0_0_0_17.10
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 1047, send 1069
    byte totals:   receive 99846, send 118228
    packet drops:  receive 0, seq error 0, send 0

Guest
 

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Re:EoMPLS Vlan Mode

Postby Guest » Wed Apr 07, 2010 11:58 am

Hi

Looks like your control plane is ok. Can you perform a pseudowire ping to make sure your forwarding plane is ok

 

Sent from Cisco Technical Support iPhone App

Guest
 

Re:EoMPLS Vlan Mode

Postby Guest » Wed Apr 07, 2010 12:45 pm

Hi,

 

ASR9k will negotiate VC Type 4 with the 3825. By default the AC on the 3825 will pop tag 10 and the PW will add a fake one (could be the same though) to respect VC Type 4.

 

On the ASR9k, the AC will do nothing by default so you will end with a packet with a double tag. You need to apply the rewrite ingress pop 1 symmetric command on the ASR9k sub-interface so you will have the same behavior than the 3825.

 

HTH

 

Laurent.

Guest
 

Re:EoMPLS Vlan Mode

Postby Guest » Wed Apr 07, 2010 1:25 pm

Thanks Laurent it works......

Guest
 

Re:EoMPLS Vlan Mode

Postby Guest » Wed Apr 07, 2010 2:03 pm

Glad to read that

 

Laurent.

Guest
 



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