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• For MD5 authentication (with packet format defined in RFC 2082), the maximum length of RIP
packets must be no less than 72 bytes.
To set the maximum length of RIP packets:
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Set the maximum length of
RIP packets.
rip max-packet-length
value
By default, the maximum length of
RIP packets is 512 bytes.
Setting the DSCP value for outgoing RIP packets
The DSCP value specifies the precedence of outgoing packets.
To set the DSCP value for outgoing RIP packets:
1. Enter system view.
system-view
N/A
2. Enter RIP view.
rip
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Set the DSCP value for
outgoing RIP packets.
dscp
dscp-value
By default, the DSCP value for
outgoing RIP packets is 48.
Configuring RIP 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.
• GR helper—A neighbor of the GR restarter. It helps the GR restarter to complete the GR
process.
After RIP restarts on a router, the router must learn RIP routes again and update its FIB table, which
causes network disconnections and route reconvergence.
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.
You cannot enable RIP NSR on a device that acts as GR restarter.
To configure GR on the GR restarter:
1. Enter system view.
N/A
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