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Configuring prefix suppression for an OSPF process
Enabling prefix suppression for an OSPF process does not suppress the prefixes of secondary IP
addresses, loopback interfaces, and passive interfaces. To suppress the prefixes of loopback and
passive interfaces, enable prefix suppression on the interfaces.
To configure prefix suppression for an OSPF process:
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 prefix
suppression for the
OSPF process.
prefix-suppression
By default, prefix suppression
is disabled for an OSPF
process.
Configuring prefix suppression for an interface
Interface prefix suppression does not suppress prefixes of secondary IP addresses.
To configure interface prefix suppression:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface
view.
interface
interface-type interface-number
N/A
3. Enable prefix
suppression for the
interface.
ospf prefix-suppression
[
disable
]
By default, prefix suppression
is disabled on an interface.
Configuring prefix prioritization
This feature enables the device to install prefixes in descending priority order: critical, high, medium,
and low. The prefix priorities are assigned through routing policies. When a route is assigned multiple
prefix priorities, the route uses the highest priority.
By default, the 32-bit OSPF host routes have a medium priority and other routes a low priority.
To configure prefix prioritization:
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 prefix
prioritization.
prefix-priority route-policy
route-policy-name
By default, prefix prioritization
is disabled.
Configuring OSPF PIC
Prefix Independent Convergence (PIC) enables the device to speed up network convergence by
ignoring the number of prefixes.
When both OSPF PIC and OSPF FRR are configured, OSPF FRR takes effect.
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