D-Link DES-3326S manual Routers Links Advertisements, 156

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

Routers Links Advertisements

Link-State Age

Options Link-State Type

Link-State ID

Advertising Router

Link-State Sequence Number

Link-State Checksum		Length
Reserved V E B	Reserved	Number of Links
	Link ID
	Link Data
Type	No. Of TOS	TOS 0 Metric
TOS	0	Metric
	...
TOS	0	Metric
	...

Link ID

Link Data

Figure 5-29. Routers Links Advertisement

In router links advertisements, the Link State ID field is set to the router’s OSPF Router ID. The T – bit is set in the advertisement’s Option field if and only if the router is able to calculate a separate set of routes for each IP Type of Service (TOS). Router links advertisements are flooded throughout a single area only.

156 Switch Management and Operating Concepts