D-Link DES-3326SR User Manual page 129

DES-3326SR Layer 3 Fast Ethernet Switch User's Guide
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Database Description packet
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Link-State Request packet
The Link-State Update packet
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Link-State Acknowledgment packet
The OSPF Packet Header
Every OSPF packet is preceded by a common 24 byte header.
This header contains the information necessary for a receiving
router to determine if the packet should be accepted for further
processing.
The format of the OSPP packet header is shown below:
OSPF Packet Header
Type
Version No.
Checksum
Figure 5-22. OSPF Packet Header
Field
Version No.
Type
Packet Length
Router ID
Area ID
Authentication Type
Authentication
Authentication
Description
The OSPF
number
The OSPF packet type.
The OSPF packet types
are as follows:
117
version