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With the GR feature, the restarting router (known as the GR restarter) can notify the event to its GR
capable neighbors. GR capable neighbors (known as GR helpers) maintain their adjacencies with
the router within a GR interval. During this process, the FIB table of the router does not change. After
the restart, the router contacts its neighbors to retrieve its FIB.
By default, a RIP-enabled device acts as the GR helper. Perform this task on the GR restarter.
IMPORTANT:
You cannot enable RIP NSR on a device that acts as GR restarter.
To configure GR on the GR restarter:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter RIP view.
rip
[
process-id
] [
vpn-instance
vpn-instance-name
]
N/A
3.
Enable GR for RIP.
graceful-restart
By default, RIP GR is disabled.
4.
(Optional.) Set the GR
interval.
graceful-restart interval
interval
By default, the GR interval is 60
seconds.
Enabling RIP NSR
Nonstop Routing (NSR) allows the device to back up the routing information from the active RIP
process to the standby RIP process. After an active/standby switchover, NSR can complete route
regeneration without tearing down adjacencies or impacting forwarding services.
NSR does not require the cooperation of neighboring devices to recover routing information, and it is
typically used more often than GR.
IMPORTANT:
A device that has RIP NSR enabled cannot act as GR restarter.
To enable RIP NSR:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter RIP view.
rip
[
process-id
] [
vpn-instance
vpn-instance-name
]
N/A
3.
Enable RIP NSR.
non-stop-routing
By default, RIP NSR is disabled.
RIP NSR enabled for a RIP
process takes effect only on that
process. As a best practice,
enable RIP NSR for each process
if multiple RIP processes exist.
Configuring BFD for RIP
RIP detects route failures by periodically sending requests. If it receives no response for a route
within a certain time, RIP considers the route unreachable. To speed up convergence, perform this
Summary of Contents for HPE FlexNetwork 7500 series
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