Specifications

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VPN 3000 Series Concentrator Reference Volume II: Administration and Monitoring
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Chapter 15 Statistics
Monitoring | Statistics | MIB-II | OSPF
AS Border Routers
The total number of Autonomous System border routers reachable within this area.
Area Border Routers
The total number of area border routers reachable within this area.
Area LSA Count
The total number of Link-State Advertisements in the link-state database of this area, excluding AS
external LSAs.
Area LSA Checksum
The sum of the checksums of the Link-State Advertisements in the link-state database of this area. This
sum excludes external LSAs. You can use this sum to determine if there has been a change in the
link-state database of the area, 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:
• Router Link = Describes the states of the router’s interfaces (LS Type 1).
• Network Link = Describes the set of routers attached to the network (LS Type 2).
• Summary Link = Describes routes to networks (LS Type 3).
• AS Summary Link = Describes routes to AS boundary routers (LS Type 4).
• AS External Link = Describes routes to destinations external to the AS (LS Type 5).
• Multicast Link = Describes group membership for multicast OSPF routing (LS Type 6).
• NSSA External Link = Describes routing for NSSAs: Not-So-Stubby-Areas (LS Type 7).