MPLS tunnel on SD-WAN

[Tonai1]

Hi all,

I'm deploying Cisco SD-WAN solution for my customer. Because of not enough physical interface on ISR, I have to use sub-interface to create a MPLS transport interface. Totally, I have 2 physical interface connect to Public Internet and 1 logical interface connect to MPLS (MPLS link connect to Core Switch). But, When I check the data plane (via WAN Tunnel on GUI of vManage), I just see 2 tunnels of Public Internet and not see tunnel of MPLS.

May I configure wrong for MPLS tunnel so I can't see it or SD-WAN doesn't create data plane tunnel for MPLS link?

Please let me know, this information is very important with me.

For more information, please see the topology or ask me.

Many thanks!

[nriv]

Are your control connections up over the MPLS transport, but not your IPSEC tunnel?

Is the MPLS sub-interface being advertised to underlay correctly? Is that MPLS router IP address reachable in your underlay?

[Tonai1]

Control connection of MPLS does not up. But MPLS router IP addresses are reached in my underlay. I have tested by ping command from site A to site B via MPLS link, it work fine.

[ekhabaro · Accepted solution]

presence of control connections over particular color is a pre requirement to establish data plane over that color (circuit). If there is no reachability to controllers and this is expected, you need to enable "max control connections 0" under tunnel-interface.

it's described here, for example: https://sdwan-docs.cisco.com/Product_Documentation/Software_Features/SD-WAN_Release_16.3/02System_and_Interfaces/07Network_Interface_Configuration_Examples

[Tonai1]

Thanks for your reply.

I will try it and update to you the result soon.

Best regard!