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Configuring the LSU transmit rate
Sending large numbers of LSU packets affects router performance and consumes a large amount of
network bandwidth. You can configure the router to send LSU packets at an interval and to limit the
maximum number of LSU packets sent out of an OSPFv3 interface at each interval.
To configure the LSU transmit rate:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter OSPFv3 view.
ospfv3
[
process-id
|
vpn-instance
vpn-instance-name
] *
N/A
3.
Configure the LSU
transmit rate.
transmit-pacing interval
interval
count
count
By default, an OSPFv3
interface sends a maximum of
three LSU packets every 20
milliseconds.
Configuring OSPFv3 GR
GR ensures forwarding continuity when a routing protocol restarts:
Two routers are required to complete a GR process. The following are router roles in a GR process.
•
GR restarter
—Graceful restarting router. It must be Graceful Restart capable.
•
GR helper
—The neighbor of the GR restarter. It helps the GR restarter to complete the GR process.
To prevent service interruption, a GR restarter running OSPFv3 must complete the following tasks:
•
Keep the GR restarter forwarding entries stable during reboot.
•
Establish all adjacencies and obtain complete topology information after reboot.
The GR restarter sends a Grace LSA to tell its neighbors that it performs a GR. Upon receiving the Grace
LSA, the neighbors with the GR helper capability enter the helper mode (and are called "GR helpers").
Then, the GR restarter retrieves its adjacencies and LSDB with the help of the GR helpers.
The VSR1000 routers can act as GR helpers only.
Configuring GR restarter
You can configure the GR restarter capability on a GR restarter.
To configure GR restarter:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter OSPFv3 view.
ospfv3
[
process-id
|
vpn-instance
vpn-instance-name
] *
N/A
3.
Enable the GR
capability.
graceful-restart enable
By default, OSPFv3 GR restarter
capability is disabled.
