Ruijie RG-S29 Series, Справочник по командам

Страница: 784 / 1510

Command Reference OSPFv3 Commands
unconditionally, no matter whether the default route exists locally or
not.
metric metric
(Optional) Initial metric value of the default route, in the range from 0
to 16777214
metric-type type
(Optional) Type of the default route. There are two type of OSPF
external routes: type 1, different metrics seen on different routers;
type 2, the same metric seen on different routers.
route-map map-name Associated route-map name, no associated route-map by default
Defaults No default route is created;
The initial metric value is 1;
The default route type is type 2.
Command
Mode
Routing process configuration mode
Usage Guide When the redistribute or default-information command is executed, the OSPFv3-enabled router
automatically turns into the autonomous system border router ( ASBR ). But the ASBR cannot
generate the default route automatically or advertise it to all the routers in the OSPFv3 routing
domain. The ASBR generates default routes by default. It is required to configure with the routing
process configuration command default-information originate .
If the always parameter is used, the OSPF routing process advertises an external default route to the
neighbors, no matter whether the default route in the core routing table exists or not. However, the
local router does not display the default route. To make sure whether the default route is generated,
execute show ipv6 ospf database to observe the OSPF link state database. The execution of the
show ipv6 route command on the OSPF neighbor will display the default route.
The metric of the external default route can be defined only with the default-information originate
command and cannot be set with the default-metric command.
There are two types of OSPFv3 external routes: type 1 external routes have changeable routing
metrics, while type 2 external routes have constant routing metrics. For two parallel routes with the
same route metric to the same destination network, type 1 takes precedence over type 2. As a result,
the show ipv6 route command displays only the type 1 route.
This command generates a default route of Type-5 LSA, which will not be flooded to the NSSA area.
To generate a default route in the NSSA area, use the area nssa default-information-originate
command.
The routers in the stub area cannot generate external default routes.
Configuration
Examples
The following example generates a default route.
default-information originate always
Related
Commands
Command Description
redistribute Redistribute routes.
show ipv6 ospf Displays the OSPFv3 routing process