Tuning and optimizing ospf networks, Configuration prerequisites, Configuring ospf packet timers – H3C Technologies H3C SR8800 User Manual
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Step Command
Remarks
2.
Enter OSPF view.
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
N/A
3.
Enter area view.
area area-id
N/A
4.
Advertise a host route.
host-advertise ip-address cost
Optional
Not advertised by default
Tuning and optimizing OSPF networks
You can optimize your OSPF network in the following ways.
•
Change OSPF packet timers to adjust the OSPF network convergence speed and network load. On
low speed links, you must consider the delay time for sending LSAs.
•
Change the SPF calculation interval to reduce resource consumption caused by frequent network
changes.
•
Configure OSPF authentication to improve security.
•
Configure OSPF network management functions, such as binding OSPF MIB with a process,
sending trap information and collecting log information.
Configuration prerequisites
Before you configure OSPF network optimization, complete the following tasks:
•
Configure IP addresses for interfaces.
•
Enable OSPF.
Configuring OSPF packet timers
You can configure the following timers on OSPF interfaces as needed.
•
Hello timer—Interval for sending hello packets. It must be identical on OSPF neighbors. The longer
the interval, the lower the convergence speed, and the smaller the network load.
•
Poll timer—Interval for sending hello packets to a neighbor that is down on the NBMA network.
•
Dead timer—Interval within which if the interface receives no hello packet from the neighbor, it
declares the neighbor is down.
•
LSA retransmission timer—Interval within which if the interface receives no acknowledgement
packets after sending a LSA to the neighbor, it retransmits the LSA.
To configure timers for OSPF packets:
Step Command
Remarks
1.
Enter system view. system-view
N/A
2.
Enter interface
view.
interface interface-type
interface-number
N/A