D-Link DES-3326S User Manual page 140

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Loading
information exchange.
request list and a link-state retransmission list.
Any
outdated will be put on the request list.
update
retransmission list until it gets acknowledged.
• Full − The adjacency is now complete.
neighboring routers are fully adjacent. Adjacent
routers will have the same link-state database.
Adjacencies on Point-to-Point Interfaces
OSPF Routers that are linked using point-to-point interfaces
(such as serial links) will always form adjacencies.
concepts of DR and BDR are unnecessary.
OSPF Packet Formats
All OSPF packet types begin with a standard 24 byte header
and there are five packet types. The header is described first,
and each packet type is described in a subsequent section.
All OSPF packets (except for Hello packets) forward link-state
advertisements. Link-State Update packets, for example, flood
advertisements throughout the OSPF routing domain.
•
OSPF packet header
•
Hello packet
•
Database Description packet
•
Link-State Request packet
The Link-State Update packet
•
•
Link-State Acknowledgment packet
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DES-3326S Layer 3 Fast Ethernet Switch User's Guide
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The routers
information that
that is sent
Switch Management and Operating Concepts
are finalizing
Routers have link-state
looks incomplete
will be put
the
or
Any
on the
The
The