1-33
z
Configure OSPF authentication to meet high security requirements of some mission-critical
networks.
z
Configure OSPF network management functions, such as binding OSPF MIB with a process,
sending trap information and collecting log information.
Prerequisites
Before configuring OSPF network optimization, you have configured:
z
IP addresses for interfaces;
z
OSPF basic functions.
Configuring OSPF Packet Timers
You can configure the following timers on OSPF interfaces as needed:
z
Hello timer: Interval for sending hello packets. It must be identical on OSPF neighbors. The longer
the interval, the lower convergence speed and smaller network load.
z
Poll timer: Interval for sending hello packets to the neighbor that is down on the NBMA network.
z
Dead timer: Interval within which if the interface receives no hello packet from the neighbor, it
declares the neighbor is down.
z
LSA retransmission timer: Interval within which if the interface receives no acknowledgement
packets after sending a LSA to the neighbor, it will retransmit the LSA.
Follow these steps to configure timers for OSPF packets:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter interface view
interface
interface-type
interface-number
—
Specify the hello
interval
ospf timer hello
seconds
Optional
The hello interval on P2P, Broadcast
interfaces defaults to 10 seconds and
defaults to 30 seconds on P2MP and
NBMA interfaces.
Specify the poll
interval
ospf timer poll
seconds
Optional
The poll interval defaults to 120 seconds.
Specify the dead
interval
ospf timer dead
seconds
Optional
The default dead interval is 40 seconds on
P2P, Broadcast interfaces and 120
seconds on P2MP and NBMA interfaces.
Specify the
retransmission
interval
ospf timer retransmit
interval
Optional
The retransmission interval defaults to 5
seconds.
