R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

78
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
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 Not advertised by default.
Tuning and optimizing OSPF networks
You can optimize an OSPF network in the following ways:
• Change OSPF packet timers to adjust the convergence speed and network load. On low-speed
links, 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.
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.
• Poll timer—Interval for sending hello packets to a neighbor that is down on the NBMA network. The
poll interval is at least four times the hello interval.
• Dead timer—Interval within which if the interface receives no hello packet from the neighbor, it
declares the neighbor is down. The dead interval must be at least four times the hello interval on an
interface.
• LSA retransmission timer—Interval within which if the interface receives no acknowledgement
packets after sending a LSA to the neighbor, it retransmits the LSA. An interval setting that is too
small can cause unnecessary LSA retransmissions. This interval is typically set bigger than the
round-trip time of a packet between two neighbors.
To configure timers for OSPF packets:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface
view.
interface interface-type
interface-number
N/A