H3C Technologies H3C S12500-X Series Switches - Manual (Page 345)

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Enabling the logging of neighbor state changes
With this feature enabled, the router delivers logs about neighbor state changes to its information center,
which processes logs according to user-defined output rules (whether to output logs and where to output).
For more information about the information center, see Network Management and Monitoring
Configuration Guide.
To enable the logging of neighbor state changes:
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 logging of
neighbor state changes.
log-peer-change By default, this feature is enabled.
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Configuring the LSU transmit rate
Sending large numbers of LSU packets affects router performance and consumes too much network
bandwidth. You can configure the router to send LSU packets at a proper interval and limit the maximum
number of LSU packets sent out of an OSPFv3 interface each time.
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.
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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.