Configuring the maximum lifetime for routes in the FIB

When GR or NSR is disabled, FIB entries must be retained for some time after a protocol process switchover or RIB process switchover. When GR or NSR is enabled, FIB entries must be removed immediately after a protocol or RIB process switchover to avoid routing issues. Perform this task to meet such requirements.

To configure the maximum lifetime for routes in the FIB (IPv4):

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter RIB view.

rib

N/A

3. Create a RIB IPv4 address family and enter its view.

address-family ipv4

By default, no RIB IPv4 address family is created.

4. Configure the maximum lifetime for IPv4 routes in the FIB.

fib lifetime seconds

By default, the maximum lifetime for routes in the FIB is 600 seconds.

To configure the maximum lifetime for routes in the FIB (IPv6):

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter RIB view.

rib

N/A

3. Create a RIB IPv6 address family and enter its view.

address-family ipv6

By default, no RIB IPv6 address family is created.

4. Configure the maximum lifetime for IPv6 routes in the FIB.

fib lifetime seconds

By default, the maximum lifetime for routes in the FIB is 600 seconds.