缺省路由OSPF 路由协议发布缺省路由

• default-information originate (always)

• default-information originate (always) metric cost

• default-information originate (always) metric-type type

• default-information originate route-map route-map-name

缺省路由ISIS 路由协议发布缺省路由

default-route-advertise [ always| match default | route-policy route-policy-name ] [ cost cost | tag tag | [ level-1 | level-1-2|level-2 ] ] * [ avoid-learning ]