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• Designated Router – Designated router for this area.
• Backup Designated Router – Designated backup router for this
area.
• Entry Count – The number of IP interfaces assigned to this VLAN.
Note: This router supports up 64 OSPF interfaces.
Detail Interface Configuration
• VLAN ID – The VLAN corresponding to the selected interface.
• Rtr Priority – Sets the interface priority for this router. (Range: 0-255;
Default: 1)
- A designated router (DR) and backup designated router (BDR) is
elected for each OSPF area based on Router Priority. The DR
forms an active adjacency to all other routers in the area to
exchange routing topology information. If for any reason the DR
fails, the BDR takes over this role.
- The router with the highest priority becomes the DR and the
router with the next highest priority becomes the BDR. If two or
more routers are set to the same priority, the router with the
higher ID will be elected. You can set the priority to zero to
prevent a router from being elected as a DR or BDR.
- If a DR already exists for an area when this interface comes up,
the new router will accept the current DR regardless of its own
priority. The DR will not change until the next time the election
process is initiated.
• Transmit Delay – Sets the estimated time to send a link-state update
packet over an interface. (Range: 1-65535 seconds; Default: 1)
- LSAs have their age incremented by a delay before transmission.
You should consider both the transmission and propagation
delays for an interface when estimating this delay. Set the transmit
delay according to link speed, using larger values for lower-speed
links.