Enabling OSPF ISPF

When a network topology is changed, Incremental Shortest Path First (ISPF) allows the system to recompute only the affected part of the shortest path tree (SPT), instead of the entire SPT.

To enable OSPF ISPF:

Step	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. Enable OSPF ISPF.	ispf enable	Optional. Disabled by default.

Step

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. Enable OSPF ISPF.

ispf enable

Optional.

Disabled by default.

prev	up	next
Setting the DSCP value for OSPF packets	home	Configuring OSPF FRR