Area Lsa Count; Area Lsa Checksum; External Lsas; Type - Cisco VPN 3000 User Manual

Area LSA Count

The total number of Link-State Advertisements in this area's link-state database, excluding AS external
LSAs.

Area LSA Checksum

The sum of the checksums of the Link-State Advertisements in this area's link-state database. This sum
excludes external LSAs. You can use this sum to determine if there has been a change in the area's
link-state database, and to compare its database with other routers.

External LSAs

This table shows a row for each external Link-State Advertisement in the link-state database.
Area ID
The Area ID identifies the Area from which the LSA was received.

Type

The LSA type. Each LSA type has a different format.

Link State ID

Either a router ID or an IP address that identifies the piece of the routing domain being described by the
LSA.

Router ID

The identifier of the router in the Autonomous System that originated this LSA.

Sequence

The sequence number of this LSA. Sequence numbers are linear. They are used to detect old and
duplicate LSAs. The larger the number, the more recent the LSA.
Age
The age of the LSA in seconds.
VPN 3000 Concentrator Series User Guide
= Describes the states of the router's interfaces (LS Type 1).
Router Link
= Describes the set of routers attached to the network (LS Type 2).
Network Link
= Describes routes to networks (LS Type 3).
Summary Link
= Describes routes to AS boundary routers (LS Type 4).
AS Summary Link
= Describes routes to destinations external to the AS (LS Type 5).
AS External Link
= Describes group membership for multicast OSPF routing (LS Type 6).
Multicast Link
NSSA External Link
= Describes routing for NSSAs: Not-So-Stubby-Areas (LS Type 7).
Monitor | Statistics | MIB-II | OSPF
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