H3C Technologies H3C S7500E Series Switches - Manual (Page 118)

4-49
Follow these steps to trigger OSPF Graceful Restart:
To do… Use the command… Remarks
Trigger OSPF Graceful Restart
reset ospf [ process-id ] process
graceful-restart
Required
Available in user view
Configuring BFD for OSPF
After discovering neighbors by sending hello packets, OSPF notifies BFD of the neighbor addresses,
and BFD uses theses 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 not 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 OSPF, you
need to configure OSPF first.
Follow these steps to enable BFD on an OSPF interface:
To do… Use the command… Description
Enter system view system-view —
Enable an OSPF process and enter its view
ospf [ process-id | router-id router-id |
vpn-instance instance-name ] *
—
Specify a network to enable OSPF on the
interface attached to the network
network ip-address wildcard-mask —
Exit to system view quit —
Enter interface view
interface interface-type
interface-number
—
Enable BFD on the interface ospf bfd enable
Required
Not enabled by
default
One network segment can only belong to one area and you need to specify each OSPF interface to
belong to the specific area.
Both ends of a BFD session must be on the same network segment and in the same area.