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OSPF PIC applies only to inter-area routes and external routes.
Enabling OSPF PIC
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter OSPF view.
ospf
[
process-id |
router-id
router-id |
vpn-instance
vpn-instance-name ] *
N/A
3. Enable PIC for
OSPF.
pic
[
additional-path-always
]
By default, OSPF PIC is
enabled.
Configuring BFD for OSPF PIC
By default, OSPF PIC does not use BFD to detect primary link failures. To speed up OSPF
convergence, enable BFD single-hop echo detection for OSPF PIC to detect the primary link failures.
To configure BFD for OSPF PIC:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Configure the source IP
address of BFD echo
packets.
bfd echo-source-ip
ip-address
By default, the source IP address
of BFD echo packets is not
configured.
3. Enter interface view.
interface
interface-type
interface-number
N/A
4. Enable BFD for OSPF PIC.
ospf primary-path-detect bfd
echo
By default, BFD for OSPF PIC is
disabled.
Configuring the number of OSPF logs
OSPF logs include route calculation logs and neighbor logs.
To configure the number of OSPF logs:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter OSPF view.
ospf
[ process-id |
router-id
router-id
|
vpn-instance
vpn-instance-name ]
*
N/A
3. Configure the
number of OSPF
logs.
event-log
{
lsa-flush
|
peer
|
spf
}
size
count
By default, the number of both route
calculation logs and neighbor logs is 10.
Configuring OSPF 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 have GR capability.
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