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test xconnect connection on ASR9K

I'm needing to know what is the best way to test and verify connectivity on a xconnect when one side is a ASR9k?

Normally if I need to verify connection across my network I pin up test IP's on the handoff vlan on both sides and ping across

Example:

Both ends of the network have a Cisco 3400 and data is passing on vlan38 for example

Switch 1 3400

interface vlan38

Ip address 169.254.10.1 255.255.255.0

Switch 2 3400

interface vlan38

Ip address 169.254.10.2 255.255.255.0

Then I ping back and fourth to confirm no packet loss across the link and that it is up.
My problem comes along when the handoff is at a ASR9k

There are several links were I have a 3400 on one end and a ASR9K on the other.

How do I test that?

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example scenario:

Handoff to customer using a Cisco 3400 (on vlan 38)

Then trunked back to a Cisco 7609 with the following config for xconnect:

interface GigabitEthernet1/13.38

description test

encapsulation dot1Q 38

xconnect x.x.x.x 1000438 encapsulation mpls

  mtu 2000

Other side is the ASR9K with the following config. (hands off to a 3rd party)

interface GigabitEthernet0/0/0/0.38 l2transport
description test
encapsulation dot1q 38
rewrite ingress tag pop 1 symmetric

xconnect group test
  p2p test
   interface GigabitEthernet0/0/0/0.38
   neighbor x.x.x.x pw-id 1000438
    pw-class EoMPLS

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