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L2VPN AToM (ATC Vid#31)

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Setup GNS3 0.8.6
IOS: 12.2(33)SRE1
IOS-XRv: 5.1.1

I can’t ping R8 10.0.0.8 from R1 10.0.0.1. Looking at packet captures, I can see ARP requests from R1 hitting R2’s f1/0 and exiting R2’s f0/0.34 with a with labels 23, 16000. The pseudowire is up and connected. On R2 the send counters for the L2VPN are incrementing. On the XR, the receive counters are not incrementing. When I ping from R8 to R1, the XR counters don’t increment either. To test connectivity from XR1 to R8, I removed l2transport from the XR1 g0/0/0/1, enabled CDP and both devices could see each other. Pings worked too when g0/0/0/1 was setup with an IP address.

Is this an IOS-XRv bug? Or am I missing something?

Thanks for looking...

-bdk


R2#traceroute 19.19.19.19 so lo0
Type escape sequence to abort.
Tracing the route to 19.19.19.19

  1 20.2.3.3 [MPLS: Label 23 Exp 0] 76 msec 80 msec 64 msec
  2 20.3.4.4 [MPLS: Label 23 Exp 0] 88 msec 64 msec 96 msec
  3 20.4.5.5 [MPLS: Label 23 Exp 0] 88 msec 76 msec 80 msec
  4 20.5.6.6 [MPLS: Label 23 Exp 0] 56 msec 64 msec 64 msec
  5 20.6.19.19 104 msec *  88 msec
R2#
R2#sh run | i the important stuff   
!
pseudowire-class ETH_TO_ETH
 encapsulation mpls
!
!
interface FastEthernet1/0
 no ip address
 duplex full
 no keepalive
 xconnect 19.19.19.19 1 pw-class ETH_TO_ETH
!
!
end
R2#   
R2#sh mpls for
Local      Outgoing   Prefix           Bytes Label   Outgoing   Next Hop    
Label      Label      or Tunnel Id     Switched      interface              
17         Pop Label  3.3.3.3/32       0             Fa0/0.23   20.2.3.3    
18         Pop Label  20.3.4.0/24      0             Fa0/0.23   20.2.3.3    
19         16         6.6.6.6/32       0             Fa0/0.23   20.2.3.3    
20         17         5.5.5.5/32       0             Fa0/0.23   20.2.3.3    
21         18         4.4.4.4/32       0             Fa0/0.23   20.2.3.3    
22         20         20.6.19.0/24     0             Fa0/0.23   20.2.3.3    
23         21         20.5.6.0/24      0             Fa0/0.23   20.2.3.3    
24         22         20.4.5.0/24      0             Fa0/0.23   20.2.3.3    
25         23         19.19.19.19/32   0             Fa0/0.23   20.2.3.3    
26         No Label   l2ckt(1)         0             Fa1/0      point2point 
R2#
R2#sh mpls l2transport vc detail
Local interface: Fa1/0 up, line protocol up, Ethernet up
  Destination address: 19.19.19.19, VC ID: 1, VC status: up
    Output interface: Fa0/0.23, imposed label stack {23 16000}
    Preferred path: not configured  
    Default path: active
    Next hop: 20.2.3.3
  Create time: 00:29:25, last status change time: 00:20:02
  Signaling protocol: LDP, peer 19.19.19.19:0 up
    Targeted Hello: 2.2.2.2(LDP Id) -> 19.19.19.19, LDP is UP
    Status TLV support (local/remote)   : enabled/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: No fault
      Last remote LDP ADJ    status rcvd: No fault
    MPLS VC labels: local 26, remote 16000 
    Group ID: local 0, remote 512
    MTU: local 1500, remote 1500
    Remote interface description: GigabitEthernet0_0_0_1
  Sequencing: receive disabled, send disabled
  Control Word: Off (configured: autosense)
  VC statistics:
    transit packet totals: receive 0, send 675
    transit byte totals:   receive 0, send 77782
    transit packet drops:  receive 0, seq error 0, send 0
R2#



RP/0/0/CPU0:XR1#sh run | i l2vpn stuff
Thu Jun 19 13:46:37.231 UTC
Building configuration...
!! IOS XR Configuration 5.1.1
!! Last configuration change at Thu Jun 19 13:46:29 2014 by bdk
!
interface GigabitEthernet0/0/0/1
 speed 100
 l2transport
 !
!
l2vpn
 pw-class ETH_TO_ETH
  encapsulation mpls
  !
 !
 xconnect group CUST_A
  p2p PORT1
   interface GigabitEthernet0/0/0/1
   neighbor ipv4 2.2.2.2 pw-id 1
    pw-class ETH_TO_ETH
   !
  !
 !
!
end

RP/0/0/CPU0:XR1#
RP/0/0/CPU0:XR1#sh mpls for
Thu Jun 19 13:21:53.932 UTC
Local  Outgoing    Prefix             Outgoing     Next Hop        Bytes       
Label  Label       or ID              Interface                    Switched    
------ ----------- ------------------ ------------ --------------- ------------
16000  Pop         PW(2.2.2.2:1)      Gi0/0/0/1    point2point     0           
16001  21          2.2.2.2/32         Gi0/0/0/0.619 20.6.19.6       11551       
16002  20          3.3.3.3/32         Gi0/0/0/0.619 20.6.19.6       0           
16003  17          4.4.4.4/32         Gi0/0/0/0.619 20.6.19.6       0           
16004  16          5.5.5.5/32         Gi0/0/0/0.619 20.6.19.6       0           
16005  Pop         6.6.6.6/32         Gi0/0/0/0.619 20.6.19.6       1632        
16006  Pop         20.5.6.0/24        Gi0/0/0/0.619 20.6.19.6       0           
16007  19          20.4.5.0/24        Gi0/0/0/0.619 20.6.19.6       0           
16008  18          20.3.4.0/24        Gi0/0/0/0.619 20.6.19.6       0           
16009  22          20.2.3.0/24        Gi0/0/0/0.619 20.6.19.6       0           
RP/0/0/CPU0:XR1#
RP/0/0/CPU0:XR1#sh l2vpn xconnect detail 
Thu Jun 19 13:22:02.252 UTC

Group CUST_A, XC PORT1, state is up; Interworking none
  AC: GigabitEthernet0/0/0/1, state is up
    Type Ethernet
    MTU 1500; XC ID 0x1; interworking none
    Statistics:
      packets: received 0, sent 0
      bytes: received 0, sent 0
  PW: neighbor 2.2.2.2, PW ID 1, state is up ( established )
    PW class ETH_TO_ETH, XC ID 0xff000001
    Encapsulation MPLS, protocol LDP
    Source address 19.19.19.19
    PW type Ethernet, control word disabled, interworking none
    PW backup disable delay 0 sec
    Sequencing not set

    PW Status TLV in use
      MPLS         Local                          Remote                        
      ------------ ------------------------------ -----------------------------
      Label        16000                          26                            
      Group ID     0x200                          unknown                       
      Interface    GigabitEthernet0/0/0/1         unknown                       
      MTU          1500                           1500                          
      Control word disabled                       disabled                      
      PW type      Ethernet                       Ethernet                      
      VCCV CV type 0x2                            0x2                           
                   (LSP ping verification)        (LSP ping verification)       
      VCCV CC type 0x6                            0x6                           
                   (router alert label)           (router alert label)          
                   (TTL expiry)                   (TTL expiry)                  
      ------------ ------------------------------ -----------------------------
    Incoming Status (PW Status TLV):
      Status code: 0x0 (Up) in Notification message
    Outgoing Status (PW Status TLV):
      Status code: 0x0 (Up) in Notification message
    MIB cpwVcIndex: 4278190081
    Create time: 19/06/2014 13:05:15 (00:16:46 ago)
    Last time status changed: 19/06/2014 13:07:19 (00:14:42 ago)
    Statistics:
      packets: received 0, sent 0
      bytes: received 0, sent 0
RP/0/0/CPU0:XR1#

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