R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)
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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:
Ste
p
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 or an active/standby switchover
occurs:
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 after a master/backup switchover, 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.
After the active/standby switchover, 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.
Configuring GR restarter
You can configure the GR restarter capability on a GR restarter.
To configure GR restarter:
Ste
p
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.