H3C Technologies H3C SR8800 - Manual (Page 324)

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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 ] N/A
3. Enable the GR
capability.
graceful-restart enable Disabled by default
4. Configure the GR
interval. graceful-restart interval
interval-value Optional
120 seconds by default
Configuring GR Helper
You can configure the GR Helper capability on a GR Helper.
To configure GR Helper
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter OSPFv3 view. ospfv3 [ process-id ] N/A
3. Enable the GR Helper
capability.
graceful-restart helper enable
Optional
Enabled by default
4. Enable strict LSA
checking. graceful-restart helper
strict-lsa-checking Optional
Disabled by default
Configuring BFD for OSPFv3
Bidirectional forwarding detection (BFD) provides a mechanism to quickly detect the connectivity of links
between OSPFv3 neighbors, thus to improve the convergence speed of OSPFv3.
After discovering neighbors by sending hello packets, OSPFv3 notifies BFD of the neighbor addresses,
and BFD uses these addresses to establish sessions. Before a BFD session is established, it is in down state.
In this state, BFD control packets are sent at an interval of no less than one second to reduce BFD control
packet traffic. After the BFD session is established, BFD control packets are sent at the negotiated interval,
thereby implementing fast fault detection.
To configure BFD for OSPFv3, you must configure OSPFv3 first.
To configure BFD for OSPFv3:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter OSPFv3 view. ospfv3 [ process-id ] N/A
3. Specify a router ID. router-id router-id N/A