H3C Technologies H3C S10500 Series Switches - Manual (Page 307)

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Configuring GR Helper
You can configure the GR Helper capability on a GR Helper.
Follow these steps to configure GR Helper
To do… Use the command… Remarks
Enter system view system-view —
Enter OSPFv3 view ospfv3 [ process-id ] —
Enable the GR Helper
capability
graceful-restart helper enable
Optional
Enabled by default.
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 the 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 need to configure OSPFv3 first.
Follow these steps to configure BFD for OSPFv3:
To do… Use the command… Remarks
Enter system view system-view —
Enter OSPFv3 view ospfv3 [ process-id ] —
Specify a router ID router-id router-id Required
Quit the OSPFv3 view quit —
Enter interface view
interface interface-type
interface-number
—
Enable an OSPFv3 process on the
interface ospfv3 process-id area area-id
[ instance instance-id ] Required
Not enabled by default
Enable BFD on the interface
ospfv3 bfd enable [ instance
instance-id ] Required
Not enabled by default
NOTE:
For more information about BFD, see High Availability Configuration Guide.