3Com 3500 - page 567

ip ospf routerID 567
✓ 3500
✓ 9000
9400
3900
9300
ip ospf routerID For CoreBuild er 9000: Applies to Layer 3 switching modules only.
Sets the OSPF router ID.
Valid Minimum Abbreviation
ip o r
Important Considerations
■The OSPF router ID identifies the router to other routers within an
autonomous system. Three types of router identifiers are available; all
three take the form of an IP address:
■Default — A unique ID that the system generates and uses as the
default router ID
■Interface — The index of an IP interface on the router
■Address — An ID that you define in the form of an IP address
■OSPF routing must be inactive (disabled) before you can add or modify
an OSPF router ID. To set the OSPF mode to disabled, see “ip ospf
interface mode” e arlier in this chapte r. After you modify the route r ID,
you can set the OSPF mode to enabled on the interface
■The router ID must be unique from all other router IDs and ip
interfaces in the autonomous system for OSPF to operate correctly.
Choose the default setting to ensure unique router IDs.
■The resulting prompt depends on the router ID type that you choose.