In order to publish the external routes introduced by the NSSA area to other areas, the Type 7 LSA needs to be converted into a Type 5 LSA so that it can be announced in the entire OSPF network. By…

In order to publish the external routes introduced by the NSSA area to other areas, the Type 7 LSA needs to be converted into a Type 5 LSA so that it can be announced in the entire OSPF network. By default, the router that performs LSA conversion is the area border router (ABR) with the largest router ID in the NSSA area.