How to advertise a network that is not directly connected to the SSR in underlay bgp 

In some cases user may want to advertise a network to other spokes that is not directly connected to the SSR.

Example:

Network-A that is not directly connected(192.168.10.0/24)-----switch-------Lan1(10.10.10.0/24)------SSR1-------peer-path----------SSR2---Lan2((10.10.11.0/24))

In this example Network-A is not directly connected to the SSR and user wanted to advertise this network to other spokes (SSR2).

• Ensure that Network-A is reachable from SSR1 and vice versa. 
• Go to Mist > Wan Edges > SSR1 > Find out the LAN network name. In this case its Lan1(10.10.10.0/24)
• Go to Organization > Networks > Lan1(10.10.10.0/24) > Look for the option Networks not directly attached (SSR Only)
• Add Network-A(192.168.10.0/24) under Networks not directly attached.
• Ensure that application policies are created to allow Network-A(192.168.10.0/24) to other spokes/hubs.
• Go to SSR2 > Testing tools > Get the BGP IP of SSR1 and check the received routes. Now you will see Network-A(192.168.10.0/24) is advertised over BGP.