D-Link DGS-3612G - xStack Switch Reference Manual page 221

Field
Network Mask
Options
Hello Interval
Router Priority
Router Dead Interval
Designated Router
Backup Designated Router
Field
Neighbor
Database Description Packet
Database Description packets are OSPF packet type 2. These packets are exchanged when an adjacency is being initialized. They
describe the contents of the topological database. Multiple packets may be used to describe the database. For this purpose, a poll-
response procedure is used. One of the routers is designated to be master, the other a slave. The master seconds Database
Description packets (polls) that are acknowledged by Database Description packets sent by the slave (responses). The responses
are linked to the polls via the packets' DD sequence numbers.
®
xStack DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch
Hello Packet
Version No. 1
Checksum
Hello Interval
Router Dead Interval
Backup Designated Router
Figure 4- 40. Hello Packet
Description
The network mask associated with this interface.
The optional capabilities supported by the router.
The number of seconds between this router's Hello packets.
This router's Router Priority. The Router Priority is used in the
election of the DR and BDR. If this field is set to 0, the router is
ineligible to become the DR or the BDR.
The number of seconds that must pass before declaring a
silent router as down.
The identity of the DR for this network, in the view of the
advertising router. The DR is identified here by its IP interface
address on the network.
The identity of the Backup Designated Router (BDR) for this
network. The BDR is identified here by its IP interface address
on the network. This field is set to 0.0.0.0 if there is no BDR.
Description
The Router IDs of each router from whom valid Hello packets
have been seen within the Router Dead Interval on the
network.
Packet Length
Router ID
Area ID
Authentication Type
Authentication
Authentication
Network Mask
Options
Designated Router
Neighbor
205
Router Priority