SMC Networks SMC6724L3 manual 214

CONFIGURING THE SWITCH

The full database is exchanged between neighboring routers as soon as a new router is discovered. Afterwards, any changes that occur in the routing tables are synchronized with neighboring routers through a process called reliable flooding. You can show information about different LSAs stored in this router’s database, which may include any of the following types:

•Router (Type 1) – All routers in an OSPF area originate Router LSAs that describe the state and cost of its active interfaces and neighbors.

•Network (Type 2) – The designated router for each area originates a Network LSA that describes all the routers that are attached to this network segment.

•Summary (Type 3) – Area border routers can generate Summary LSAs that give the cost to a subnetwork located outside the area.

•AS Summary (Type 4) – Area border routers can generate AS Summary LSAs that give the cost to an autonomous system boundary router (ASBR).

•AS External (Type 5) – An ASBR can generate an AS External LSA for each known network destination outside the AS.

•NSSA External (Type 7) – An ASBR within an NSSA generates an NSSA external link state advertisement for each known network destination outside the AS.

Command Attributes

•Area ID – Area defined for which you want to view LSA information. (This item must be entered in the form of an IP address.)

•Link ID – The network portion described by an LSA. The Link ID should be:

-An IP network number for Type 3 Summary and Type 5 AS External LSAs. (When an Type 5 AS External LSA is describing a default route, its Link ID is set to the default destination 0.0.0.0.)

-A Router ID for Router, Network, and Type 4 AS Summary LSAs.

•Self-Originate– Shows LSAs originated by this router.

•LS Type – LSA Type (Options: Type 1-5, 7). See the preceding description.

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