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
