Routes can be explicitly imported into BGP4 for advertisement.
You can specify a route to be local. If the same route is received by means of EGP, the local IGP route is preferred. You can also specify a weight that the device adds to routes that are received from the specified BGP neighbor. BGP4 prefers larger weights over smaller weights.
This procedure imports a route with a routemap. For more examples, see the Extreme SLX-OS Command Reference.
device# configure terminal
device(config)# router bgp
device(config-bgp-router)# address-family ipv4 unicast
device(config-bgp-ipv4u)# network 10.1.1.1/32 route-map myroutemap