IWAN - MC HUB (CSR 1000v) and Border Routers Design

[mindgame71]

Hi There

I am working for a design for customer with a Master Controller as a virtual router. Because the master controller is virtual there are some limitiations. The Master Controller will be in a differen VLAN 20 (10.20.0.0/24) the Border Router are in VLAN 30 (10.30.0.0/24). When I am looking at IWAN deploy guides the MC HUB and Border Router are directly connected.

Lo0: 10.1.0.11                                                                                                  Lo0: 10.1.0.5

  |                                                                                                                                    |                     
MC HUB (1000v)-10.20.0.11-------- .1 Router between .1--------10.30.0.5-Border Router

I am planning to use Lo0 as source interface for the IWAN domain and I would care about the connectivity between the Lo0 interfaces for example with ospf area 0.

Is this a common deployment? Is there anything to consider about?

Many thanks and best regards

[Philip D'Ath]

The master controller can be anywhere, it just needs IP connectivity to each border router (which could be spread all over the world).

[mindgame71]

Hi Philip

Thanks for the feedback. That is was I thought about.

Best Regards

[Vasilii Mikhailovskii]

Hello.

Hub or transit site MC may be placed in any place of your site topology.

Branch MC must be on a connected subnet with all local branch BRs (due to CSCuu40241 - known limitation). This is typically not an problem, as best practice dictates to have a direct L3 link between two boxes.

Best regards,

[mindgame71]

Hi Vasili

Thanks for your answer!

My Master Controller has connectivity to the local HUB-BR Router where PFR is configured and also to the Branch BR/Master Router.

From the Output of my MC-Router I see the connection but I do NOT see anything under configured interfaces!?

MC-Router#sh domain IWAN master status

  *** Domain MC Status ***

 Master VRF: Global

  Instance Type:    Branch
  Instance id:      0
  Operational status:  Up
  Configured status:  Up
  Loopback IP Address: 10.70.51.1

[SNIP]

  Borders:
    IP address: 10.70.51.1
    Connection status: CONNECTED (Last Updated 02:18:00 ago )
    Interfaces configured:

-> Empty!
Does anybody know what could be the reason or had a similiar problem?

Many Thanks and best Regards