Peer is unreachable in BGP routing table

Hi @ster!

The target network segment is consistent with the next hop and belongs to the supernet route. The default device does not take effect on the supernet route, so the setting state is unreachable. Processing method for supernet unicast routing and supernet label routing

Command Line:

supernet unicast advertise enable

supernet label-route advertise

BGP supernet routing means that the destination address of the route is the same as the next-hop address or the destination address of the route is more accurate. Supernet routing is one of the following two conditions:

• The destination address and next-hop address of the route are bitwise ANDed with the destination address mask of the route, respectively. The two network addresses obtained are the same, and the destination address mask of the route is greater than or equal to the next-hop address mask;

• The destination address and next-hop address of the route are bitwise ANDed with the destination address mask of the route. The two network addresses obtained are different, but the destination address and next-hop address of the route are masked with the next-hop address. Performing the bitwise AND, the two network addresses obtained are the same.

When a device receives a BGP supernet unicast route, it sets the BGP supernet unicast route as an invalid route and does not advertise it to other peers. But sometimes this BGP supernet unicast routes need to be advertised to other peers. For example, in the scenario of connecting with other manufacturers 'devices, the device will receive BGP supernet unicast routes from other manufacturers' devices, and these Routes need to be forwarded to other peers. At this time, you can configure the function of sending BGP supernet unicast routes to peers.

Glad to help you! Any further questions, let us know!