Re: L2VPN/pseudowire inter-AS option C

Hi Brian,

The /32's are there and the targeted LDP session is up. I just can't
communicate between CE's for some reason. Here are the outputs:

P2AS1:

RP/0/0/CPU0:P2AS1#sh run router static
Wed Mar 6 21:34:04.642 UTC
router static
 address-family ipv4 unicast
  10.0.36.6/32 GigabitEthernet0/0/0/0
 !
!
RP/0/0/CPU0:P2AS1#sh run router bgp
router bgp 1
 bgp router-id 3.3.3.3
 address-family ipv4 unicast
  network 2.2.2.2/32
  allocate-label all
 !
 neighbor 10.0.36.6
  remote-as 2
  address-family ipv4 unicast
  !
  address-family ipv4 labeled-unicast
   route-policy PASS in
   route-policy PASS out
  !
 !
!

P2AS2:

RP/0/0/CPU0:P2AS2#sh run router static
Wed Mar 6 21:40:07.337 UTC
router static
 address-family ipv4 unicast
  10.0.36.3/32 GigabitEthernet0/0/0/0
 !
!

RP/0/0/CPU0:P2AS2#sh run router bgp
Wed Mar 6 21:40:13.317 UTC
router bgp 2
 bgp router-id 6.6.6.6
 address-family ipv4 unicast
  network 7.7.7.7/32
  allocate-label all
 !
 neighbor 10.0.36.3
  remote-as 1
  address-family ipv4 unicast
  !
  address-family ipv4 labeled-unicast
   route-policy PASS in
   route-policy PASS out
  !
 !
!

On P1AS1

RP/0/0/CPU0:P1AS1#sh l2vpn xc
Wed Mar 6 21:41:22.822 UTC
Legend: ST = State, UP = Up, DN = Down, AD = Admin Down, UR = Unresolved,
        SB = Standby, SR = Standby Ready, (PP) = Partially Programmed

XConnect Segment 1 Segment 2
Group Name ST Description ST Description
       ST
------------------------ -----------------------------
-----------------------------
C1 P1 UP Gi0/0/0/0 UP 7.7.7.7
1 UP
----------------------------------------------------------------------------------------
RP/0/0/CPU0:P1AS1#
RP/0/0/CPU0:P1AS1#sh l2vpn xc de
Wed Mar 6 21:41:26.892 UTC

Group C1, XC P1, state is up; Interworking none
  AC: GigabitEthernet0/0/0/0, 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 7.7.7.7, PW ID 1, state is up
    PW class not set, XC ID 0xff000001
    Encapsulation MPLS, protocol none
    Source address 2.2.2.2
    PW type Ethernet, control word disabled, interworking none
    PW backup disable delay 0 sec
    Sequencing not set

      MPLS Local Remote
      ------------ ------------------------------
-----------------------------
      Label 400 50
      Interface GigabitEthernet0/0/0/0
      MTU 1500
      Control word disabled
      PW type Ethernet
      VCCV CV type 0x2
                   (LSP ping verification)
      VCCV CC type 0x6
                   (router alert label)
                   (TTL expiry)
      ------------ ------------------------------
-----------------------------
    MIB cpwVcIndex: 4278190081
    Create time: 06/03/2013 21:28:20 (00:13:06 ago)
    Last time status changed: 06/03/2013 21:28:20 (00:13:06 ago)
    Statistics:
      packets: received 0, sent 0
      bytes: received 0, sent 0

Here is a trace from P1AS1 (2.2.2.2) to P1AS2 (7.7.7.7)

RP/0/0/CPU0:P1AS1#trace 7.7.7.7 so 2.2.2.2
Wed Mar 6 21:42:36.727 UTC

Type escape sequence to abort.
Tracing the route to 7.7.7.7

 1 10.0.23.3 [MPLS: Label 16003 Exp 0] 0 msec 119 msec 119 msec
 2 10.0.36.6 [MPLS: Label 16001 Exp 0] 79 msec 79 msec 79 msec
 3 10.0.67.7 119 msec * 0 msec

 So end-to-end seems fine, however CE's still can't talk. Here is a test
ping from CE1 to CE2

RP/0/0/CPU0:CE1(config)#do ping 10.0.78.8 count 2
Wed Mar 6 21:48:04.664 UTC
Type escape sequence to abort.
Sending 2, 100-byte ICMP Echos to 10.0.78.8, timeout is 2 seconds:
..
Success rate is 0 percent (0/2)

Nothing in the ARP table either
RP/0/0/CPU0:CE1#sh arp
Wed Mar 6 21:45:59.263 UTC

-------------------------------------------------------------------------------
0/0/CPU0
-------------------------------------------------------------------------------
Address Age Hardware Addr State Type Interface
10.0.78.1 - 5246.0300.0001 Interface ARPA
 GigabitEthernet0/0/0/0

Seems so simple, not sure where I went wrong?

Thanks,
Steve Di Bias- CCIE #32840

On Wed, Mar 6, 2013 at 11:09 AM, Brian McGahan <bmcgahan_at_ine.com> wrote:

> Is the targeted LDP session up between the L2VPN endpoints? Do P2AS1 and
> P2AS2 have static /32 host routes configured for the connected addresses
> they're doing IPv4+BGP Label exchange on? What happens when you traceroute
> between the endpoints of the xconnect?
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security), CCDE #2013::13
> bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Steve Di Bias
> Sent: Wednesday, March 06, 2013 11:57 AM
> To: ccielab_at_groupstudy.com
> Subject: L2VPN/pseudowire inter-AS option C
>
> Hello Experts!
>
> I m labbing some L2VPN/pseudowire inter-AS option C but I m having some
> issues making this work. Here is the setup:
>
> CE1---P1AS1---P2AS1------P2AS2---P1AS2---CE2
>
> P2AS1 and P2AS2 are running eBGP IPv4+Labels and the p2p/pseudowire between
> P1AS1 and P2AS2 is up, however I can t ping between the CE s.
>
> RP/0/0/CPU0:P1AS1#show l2vpn xc
> Wed Mar 6 17:31:58.675 UTC
> Legend: ST = State, UP = Up, DN = Down, AD = Admin Down, UR = Unresolved,
> SB = Standby, SR = Standby Ready, (PP) = Partially Programmed
>
> XConnect Segment 1 Segment 2
> Group Name ST Description ST Description
> ST
> ------------------------ -----------------------------
> -----------------------------
> C1 P1 UP Gi0/0/0/0 UP 7.7.7.7
> 1 UP
>
> -----------------------------------------------------------------------------
> -----------
>
> So the end to end LSP looks fine, the p2p is up but no connection between
> the CE s. Here is the l2vpn and interface config:
>
> RP/0/0/CPU0:P1AS1#sh run l2vpn
> Wed Mar 6 17:39:27.114 UTC
> l2vpn
> xconnect group C1
> p2p P1
> interface GigabitEthernet0/0/0/0
> neighbor ipv4 7.7.7.7 pw-id 1
> !
> !
> !
> !
> RP/0/0/CPU0:P1AS1#sh run int gig0/0/0/0
> Wed Mar 6 17:39:33.033 UTC
> interface GigabitEthernet0/0/0/0
> l2transport
> !
> !
>
> When I ping between CE routers I see the input packet count incrementing on
> Gig0/0/0/0 for both P1AS1 and P1AS2, but the packets aren't flowing across
> the vc
>
> RP/0/0/CPU0:P1AS1#sh int gig0/0/0/0 | include "packets input"
> Wed Mar 6 17:43:14.028 UTC
> 20 packets input <-- Packets incrementing when sending packets from
> CE1 to CE2
>
>
> I will only have this lab setup like this for today so any thoughts are
> appreciated!!
>
> Thanks
>
>
> Blogs and organic groups at http://www.ccie.net
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Received on Wed Mar 06 2013 - 13:56:10 ART