Allowing or blocking a range of external routes available through an ASBR in an NSSA

Example of allowing or blocking a range of external RAs to the backbone

This example applies only to external routes that can be advertised from an NSSA to the backbone. The first command defines the range of external routes in the Area 7 NSSA to advertise to the backbone. The second command defines the range of external routes in the Area 7 NSSA to block from advertising to the backbone.

switch(config)# area 7 range 192.51.0.0/16 type nssa

switch(config)# area 7 range 192.51.0.0/16 no-advertise type nssa