R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

5
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):
Ste
p
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):
Ste
p
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.
Configuring RIB NSR
The following matrix shows the feature and hardware compatibility:
Hardware RIB NSR feature com
p
atibilit
y
MSR2000 No
MSR3000 No
MSR4000 Yes
IMPORTANT:
Use this feature with protocol GR or NSR to avoid route timeouts and traffic interruption.
When an active/standby switchover occurs, nonstop routing (NSR) backs up routing information from
the active process to the standby process to avoid routing flapping and ensure forwarding continuity.