H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 28)

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• 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 for sending 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 the specified period of time. To solve this problem, configure the same
interval for sending VRRP advertisements on each router in the VRRP group.
Configuration prerequisites
Before you configure the relevant attributes of VRRP packets, create a VRRP group and configure a virtual
IP address for it.
Configuration procedure
To configure VRRP packet attributes:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter the specified interface
view.
interface interface-type
interface-number
N/A
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.
Enabling VRRP traps
If VRRP traps are enabled, VRRP generates traps with severity level errors to report its key events to the
information center. You can configure whether to output the traps and trap output destinations at the
information center. For information about configuring the information center, see Network Management
and Monitoring Configuration Guide.
To enable VRRP traps:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable VRRP traps.
snmp-agent trap enable vrrp
[ authfailure | newmaster ] Optional.
Enabled by default.