Advertising specific subnets over SDWAN

We have four subnets and we have defined static route to each subnet in Branch1 LAN-VR. We want to advertise first two subnet  to Branch2 through SDWAN .

Prerequisite

1.Director and controller should be  deployed.

2.Branches on boarded, tunnel interface (ptvi) should be up

3.There should be reachability between LAN interfaces of Branch1 and Branch2

Configuration Procedure:

Step1 : Go to Configuration tab, select Tenant1 and click Branch1

Step 2 : Select Virtual Routers and click Tenant1-LAV-VR

Step 3 : Select Static routing and click on + button to add static routes

Enter Destination network, choose Next hop interface as vni-0/2 (the LAN side interface of the CPE) and Next hop ip address.Then click OK

Similarly, configure other static routes as above

Step 4 : Select prefix list and click on + button to add new prefix list.

Enter prefix list name and click + button to add sequences to the list

Enter sequence number, select action (permit/deny), IP address and mask. Click OK

Similarly, create sequences for other IP addresses .Here we are permitting subnets 192.168.10.0/24 and 192.168.20.0/24 only.

Click OK.

Step 5 : Select Redistribution Policies tab and click on Default-Policy-To-BGP from the list of policies shown.

Click on + button to add new redistribution policy entry.

Enter a name for policy,select protocol as static,select prefix filter List-1,then click OK

Now we have completed all necessary configuration .We can verify the result by login in to Branch’s console.

On Branch1 we can see static routes in Tenant1-LAN-VR by command

cli>show route routing-instance Tenant1-LAN-VR

Also, we can see routes advertised from Branch1 to Branch 2 through SDWAN by command

cli> show route table l3vpn.ipv4.unicast routing-instance Tenant1-Control-VR advertising protocol bgp

Similarly on Branch2 we can see routes received

cli>show router routing-instance Tenant1-LAN-VR