DES-3326S Layer 3 Fast Ethernet Switch User’s Guide

 

 

 

Description

 

 

 

 

 

3

Link-State

 

 

 

 

 

 

Request

 

 

 

 

 

 

4

Link-State Update

 

 

5

Link-State

 

 

 

 

 

 

Acknowledgment

 

Packet Length

The length of the packet

 

 

in bytes.

 

This

length

 

 

includes

the

24

byte

 

 

header.

 

 

 

 

 

 

 

Router ID

The

Router

ID

of

the

 

 

packet’s source.

 

 

 

 

 

Area ID

A

32-bit

 

number

 

 

identifying

the

area

that

 

 

this

packet

belongs

to.

 

 

All

OSPF

 

packets

are

 

 

associated

with

a

single

 

 

area.

Packets

traversing

 

 

a virtual link are assigned

 

 

the backbone Area ID of

 

 

0.0.0.0

 

 

 

 

 

 

 

Checksum

A standard IP checksum

 

 

that includes all of the

 

 

packet’s contents

except

 

 

for

the

 

64-bit

 

 

authentication field.

 

 

 

Authentication Type

The type of authentication

 

 

to be used for the packet.

 

Authentication

A 64-bit field used by the

 

 

authentication scheme

 

 

 

 

 

 

 

 

 

 

142

Switch Management and Operating Concepts

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D-Link DES-3326S manual 142