C
HAPTER
45
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1046 –
â—† Type 1 route advertisements add the internal cost to the external route
metric. Type 2 routes do not add the internal cost metric. When
comparing Type 2 routes, the internal cost is only used as a tie-breaker
if several Type 2 routes have the same cost.
â—† This command should not be used to generate a default route for a stub
or NSSA. To generate a default route for these area types, use the area
stub or area nssa commands.
EXAMPLE
This example assigns a metric of 20 to the default external route
advertised into an autonomous system, sending it as a Type 2 external
metric.
Console(config-router)#default-information originate metric 20 metric-type 2
Console(config-router)#
RELATED COMMANDS
ip route (1020)
redistribute (1052)
router-id This command assigns a unique router ID for this device within the
autonomous system for the current OSPF process. Use the no form to use
the default router identification method (i.e., the highest interface
address).
SYNTAX
router-id ip-address
no router-id
ip-address - Router ID formatted as an IPv4 address.
COMMAND MODE
Router Configuration
DEFAULT SETTING
Highest interface address
COMMAND USAGE
â—† This command sets the router ID for the OSPF process specified in the
router ospf command.
â—† The router ID must be unique for every router in the autonomous
system. Using the default setting based on the highest interface
address ensures that each router ID is unique. (Note that the router ID
can also be set to 0.0.0.0 or 255.255.255.255).
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