l2vpn xconnect is not coming up

[Badshah]

Hi all,

My P2P l2vpn xconnect is not coming up. I trying to figure the problem out. What am I missing? 

hostname XR1
interface Loopback0
ipv4 address 192.168.100.2 255.255.255.255
!

interface GigabitEthernet0/0/0/0
ipv4 address 10.0.200.6 255.255.255.252
!
interface GigabitEthernet0/0/0/1.10 l2transport
encapsulation dot1q 10
rewrite ingress tag pop 1 symmetric
!
interface GigabitEthernet0/0/0/2
shutdown
!
router ospf 1
router-id 192.168.100.2
mpls ldp auto-config
area 0
interface Loopback0
passive enable
!
interface GigabitEthernet0/0/0/0
network point-to-point
!
!
!
l2vpn
pw-class BASE
encapsulation mpls
protocol ldp
ipv4 source 192.168.100.2
!
!
xconnect group default
p2p CO19216801
interface GigabitEthernet0/0/0/1.10
neighbor ipv4 192.168.100.3 pw-id 10
pw-class BASE
!
!
!
!
mpls ldp
router-id 192.168.100.2
address-family ipv4
!
!
end

RP/0/0/CPU0:XR1#

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

XR2:

hostname XR2
interface Loopback0
ipv4 address 192.168.100.3 255.255.255.255

interface GigabitEthernet0/0/0/0
ipv4 address 10.0.200.10 255.255.255.252
!
interface GigabitEthernet0/0/0/1.10 l2transport
encapsulation dot1q 10
rewrite ingress tag pop 1 symmetric
!
interface GigabitEthernet0/0/0/2
shutdown
!
router ospf 1
router-id 192.168.100.3
mpls ldp auto-config
area 0
interface Loopback0
passive enable
!
interface GigabitEthernet0/0/0/0
network point-to-point
!
!
!
l2vpn
pw-class BASE
encapsulation mpls
protocol ldp
ipv4 source 192.168.100.3
!
!
xconnect group default
p2p CO19216801
interface GigabitEthernet0/0/0/1.10
neighbor ipv4 192.168.100.2 pw-id 10
pw-class BASE
!
!
!
!
mpls ldp
router-id 192.168.100.3
!
end

RP/0/0/CPU0:XR2#

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

P router in between two XR routers

interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface GigabitEthernet0/0
ip address 10.0.200.5 255.255.255.252
ip ospf network point-to-point
duplex auto
speed auto
media-type rj45
mpls ip
!

interface GigabitEthernet0/2
ip address 10.0.200.9 255.255.255.252
ip ospf network point-to-point
duplex auto
speed auto
media-type rj45
mpls ip
!

router ospf 1
router-id 1.1.1.1
passive-interface Loopback0
network 10.0.200.5 0.0.0.0 area 0
network 10.0.200.9 0.0.0.0 area 0

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

l2vpn status

RP/0/0/CPU0:XR1#sh l2vpn xconnect
Sat Dec 14 05:32:12.702 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
------------------------ ----------------------------- -----------------------------
default CO19216801 DN Gi0/0/0/1.10 DN 192.168.100.3 10 DN
---------------------------------------------------------------------------------------

[MHM Cisco World]

I send you PM check it 

MHM

[Badshah]

I have replied you back. Please check.

[Harold Ritter]

Hi @Badshah ,

You need to enable LDP on the core facing interface on both XR1 and XR2

mpls ldp interface GigabitEthernet0/0/0/0

Regards,

[MHM Cisco World]

He use auto-config under ospf so it by defualt will enable ldp under interface run ospf.

MHM

[Harold Ritter]

Hi @MHM Cisco World ,

Good catch.

@Badshah ,

Can you please provide a "sh mpls ldp neighbor brief" for both XR1 and XR2?

Regards,

[Badshah]

Hi Harold,

Thank you for your response. PW is up after changing AC interface at PEs to 

RP/0/0/CPU0:XR1#sh run int g0/0/0/2.10
Sun Dec 15 02:22:58.131 UTC
interface GigabitEthernet0/0/0/2.10 l2transport
dot1q vlan 10
!

RP/0/0/CPU0:XR1#sh l2vpn xconnect group default xc-name CO19216801
Sun Dec 15 02:21:09.148 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
------------------------ ----------------------------- -----------------------------
default CO19216801 UP Gi0/0/0/1.10 UP 192.168.100.3 10 UP
-----------------------------------------------------------------------------------

I'm having another problem now. None of the CE can ping each other. Both CE's are tagging traffic (vlan 10). I removed the "rewrite ingress tag pop 1 symmetric" from both PE interfaces. But no expected outcome is being found.

[Harold Ritter]

Hi @Badshah ,

This is normal behaviour with XRv.  Only the control plane works properly. The data plane doesn't.

XRv9k supports both control and data plane.

Regards,

[Badshah]

Hi Harold,

So, the real IOS-XR device would behave normally with my configuration. Am I correct?  

Regards,

Badshah Sekendar

[Harold Ritter · Accepted solution]

Hi @Badshah ,

That is correct. You could use XRv9k if you want to test it in your lab. XRv9k supports both control and data plane.

Regards,

[Badshah]

PW is up now. However, none of the CE can ping each other. Both CE's are tagging traffic (vlan 10). I removed the "rewrite ingress tag pop 1 symmetric" from both PE interfaces. But no expected outcome is being found.