H3C Technologies H3C SR8800 - Manual (Page 69)

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Step Command Remarks
3. Configure the authentication
mode and authentication key
when the VRRP groups send
and receive VRRP packets.
vrrp vrid virtual-router-id
authentication-mode { md5 |
simple } key Optional.
Authentication is not performed by
default.
4. Configure the time interval for
the master in the VRRP group
to send VRRP advertisements.
vrrp vrid virtual-router-id timer
advertise adver-interval Optional.
1 second by default.
5. Disable TTL check on VRRP
packets.
vrrp un-check ttl
Optional.
Enabled by default.
You do not need to create a VRRP
group before executing this
command.
NOTE:
•
You might configure different authentication modes and authentication keys for the VRRP groups on an
interface. However, the members of the same VRRP group must use the same authentication mode and
authentication key.
• Excessive traffic might cause a backup to trigger a change of its status because the backup does not
receive any VRRP advertisements for a specified period of time. To solve this problem, prolong the time
interval to send VRRP advertisements.
• Configuring different intervals for sending VRRP advertisements on the routers in a VRRP group might
cause a backup to trigger a change of its status because the backup does not receive any VRRP
advertisements for a specified period of time. To solve this problem, configure the same interval for
sending VRRP advertisements on each router in the VRRP group.
Enabling the trap function for VRRP
When the trap function is enabled for VRRP, VRRP generates traps with severity level errors to report its
key events. The traps are sent to the information center of the device, where you can configure whether
to output the trap information and the output destination. For how to configure the information center, see
Network Management and Monitoring Configuration Guide.
To enable the trap function for VRRP:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable the trap function for
VRRP.
snmp-agent trap enable vrrp
[ authfailure | newmaster ] Optional
Enabled by default
NOTE:
For more information about the snmp-agent trap enable vrrp command, see the snmp-agent trap enable
command in
Network Management and Monitoring Command Reference.
Displaying and maintaining VRRP for IPv4