Dell POWEREDGE M1000E User Manual

Page 1117

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OSPF Commands

1117

Number of Active

Areas

The number of OSPF areas to which the router is attached on

interfaces that are up.

ABR Status

Shows whether the router is an OSPF Area Border Router.

ASBR Status

Indicates whether the router is an autonomous system border

router. Router automatically becomes an ASBR when it is

configured to redistribute routes learned from another protocol.

The possible values for the ASBR status is enabled (if the router

is configured to re-distribute routes learned by other protocols)

or disabled (if the router is not configured for the same).

Stub Router

OSPF enters stub router mode, as described in RFC 3137, when

it encounters a resource limitation that prevents it from

computing a complete routing table. In this state, OSPF sets the

link metrics of non-stub links in its own router LSAs to the

largest possible value, discouraging other routers from

computing paths through the stub router, but allowing other

routers to compute routes to destinations attached to the stub

router. To restore OSPF to normal operation, resolve the

condition that caused the resource overload, then disable and re-

enable OSPF globally.

External LSDB

Overflow

OSPF enters this state when the number of external LSAs

exceeds a configured limit, as described in RFC 1765.

External LSA

Count

Shows the number of external (LS type 5) link-state

advertisements in the link-state database.

External LSA

Checksum

Shows the sum of the LS checksums of external link-state

advertisements contained in the link-state database.

AS_OPAQUE LSA

Count

Shows the number of AS Opaque LSAs received.

AS_OPAQUE LSA

Checksum

Sum of the checksums of all AS Opaque LSAs in the link state

database.

New LSAs

Originated

Shows the number of link-state advertisements that have been

originated.

LSAs Received

Shows the number of link-state advertisements received

determined to be new instantiations.

LSA Count

The number of LSAs in the link state database.

Maximum Number

of LSAs

The limit on the number of LSAs that the router can store in its

link state database.

2CSPC4.XModular-SWUM200.book Page 1117 Thursday, March 10, 2011 11:18 AM

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