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3 displaying the neighbor table – Planet Technology WGS3-2620 User Manual

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WGS3 Layer 3 Switch User’s Manual

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Parameter Description

Area Identity

An OSPF area identifier configured for a group of OSPF routers.

Type

The link state advertisement type:

RtrLSA: Router LSA – All area routers advertise the state of links from the router

itself to the its local area.

NetLSA: Network LSA – The designated router for each area advertises the link

state for each transit area; i.e., an area with more than one attached router. This

LSA includes information about each router attached to the area, including the

designated router itself.

SumLSA: Summary LSA – Advertise the cost to a specific subnetwork outside

the router’s area, or the cost to a specific autonomous system boundary router.

ExtLSA: External LSA – Advertises link state information for each known

network outside the autonomous system.

Link State ID

The identifier for the router originating this entry, usually in the form of an IP

address.

Router ID

The IP address of the originating router.

Sequence No.

The link state sequence number, used to remove previous duplicate LSAs.

Age

The number of seconds since this LSA was originated.

5.8.6.5.3 Displaying the Neighbor Table

Each router exchanges link state information with all neighbors physically attached to the same network

segment. This table displays a summary of the link state for all adjacent neighbors. (Note that

neighboring routers are discovered by this device via Hello messages.).

Parameter Description

IP Address

IP address of the neighboring router

ID

The index number of the router interface to which this neighbor is attached. For

IP protocol, this value will always be zero.

Router ID

The OSPF identifier for the neighboring router.