Triggering Ospf Graceful Restart; Configuring Bfd For Ospf; Configuring Control Packet Bidirectional Detection - HP 6125G Configuration Manual

Step
4. Configure the neighbors for
which the router can serve as
a GR Helper.
Configuring the non IETF standard OSPF GR Helper
Step
1. Enter system view.
2. Enable OSPF and enter its
view.
3. Enable the link-local signaling
capability.
4. Enable the out-of-band
re-synchronization capability.
5. Configure the neighbors for
which the router can serve as
a GR Helper.

Triggering OSPF Graceful Restart

Performing a Master/Slave switchover, or performing the following configuration on an OSPF router, will
trigger OSPF Graceful Restart.
To trigger OSPF Graceful Restart:
Task
Trigger OSPF Graceful Restart.

Configuring BFD for OSPF

OSPF supports the following BFD detection methods:
Control packet bidirectional detection, which requires BFD configuration to be made on both OSPF
•
routers on the link.
Echo packet single-hop detection, which requires BFD configuration to be made on one OSPF router
•
on the link.

Configuring control packet bidirectional detection

Both ends of a BFD session must be on the same network segment and in the same area. One network
segment can only belong to one area.
Command
graceful-restart help { acl-number
| prefix prefix-list }
Command
system-view
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
enable link-local-signaling
enable
out-of-band-resynchronization
graceful-restart help { acl-number
| prefix prefix-list }
Command
reset ospf [ process-id ] process
graceful-restart
88
Remarks
Optional.
The router can serve as a GR
Helper for any OSPF neighbor by
default.
Remarks
N/A
N/A
Disabled by default.
Disabled by default.
Optional.
The router can serve as a GR
Helper for any OSPF neighbor by
default.
Remarks
Available in user view