D-Link DGS-3324SR User Manual page 122

D-Link DGS-3324SR Layer 3 Stackable Gigabit Ethernet Switch
Field
Link State Age
Options
Link State Type
Link State ID
Advertising Router
Link State Sequence
Number
Link State Checksum
Length
Link-State Advertisement Header
Link-State Age
Link-State ID
Advertising Router
Link-State Sequence Number
Link-State Checksum
Description
The time is seconds since the link state advertisement was
originated.
The optional capabilities supported by the described portion of
the routing domain.
The type of the link state advertisement. Each link state type has
a separate advertisement format. The link state type are as
follows:
Type Description
1 Router Links
Network Links
Summary Link (IP Network)
Summary Link (ASBR)
AS External Link
This field identifies the portion of the internet environment that is
being described by the advertisement. The contents of this field
depend on the advertisement's Link State Type.
The Router ID of the router that originated the Link State
Advertisement. For example, in network links advertisements this
field is set to the Router ID of the network's Designated Router.
Detects old or duplicate link state advertisements. Successive
instances of a link state advertisement are given successive Link
State Sequence numbers.
The Fletcher checksum of the complete contents of the link state
advertisement, including the link state advertisement header by
excepting the Link State Age field.
The length in bytes of the link state advertisement. This includes
the 20-byte link state advertisement header.
Table 4- 11. Link-State Advertisement Header
Options
Length
107
Link-State Type