4 Command Line Interface

The following shows output when using the external keyword.

Console#show ip ospf database external

OSPF Router with id(192.168.5.1) (Autonomous system 5)

Displaying AS External Link States

LS age: 433

Options: (No TOS-capability)

LS Type: AS External Link

Link State ID: 10.1.1.253 (External Network Number)

Advertising Router: 10.1.2.254

LS Sequence Number: 80000002

LS Checksum: 0x51E2

Length: 32

Network Mask: 255.255.0.0

Metric Type: 2 (Larger than any link state path)

Metric: 1

Forward Address: 0.0.0.0

External Route Tag: 0

Console#

 

Table 4-95 show ip ospf external - display description

Field

 

Description

 

 

 

OSPF Router id

 

Router ID

 

 

 

LS age

 

Age of LSA (in seconds)

 

 

 

Options

 

Optional capabilities associated with the LSA

 

 

 

LS Type

 

AS External Links - LSA describes routes to destinations outside the AS (including

 

 

default external routes for the AS)

Link State ID

 

IP network number (External Network Number)

 

 

 

Advertising Router

 

Advertising router ID

 

 

 

LS Sequence Number

 

Sequence number of LSA (used to detect older duplicate LSAs)

 

 

 

LS Checksum

 

Checksum of the complete contents of the LSA

 

 

 

Length

 

The length of the LSA in bytes

 

 

 

Network Mask

 

Address mask for the network

 

 

 

Metric Type

 

Type 1 or Type 2 external metric (see “redistribute” on page 4-270)

 

 

 

Metrics

 

Cost of the link

 

 

 

Forward Address

 

Forwarding address for data to be passed to the advertised destination

 

 

(If set to 0.0.0.0, data is forwarded to the originator of the advertisement)

 

 

 

External Route Tag

 

32-bit field attached to each external route

 

 

(Not used by OSPF; may be used to communicate other information between

 

 

boundary routers as defined by specific applications)

4-288

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Microsoft ES4625, ES4649 Following shows output when using the external keyword, show ip ospf external display description
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ES4649, ES4625 specifications

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