R0106-HP MSR Router Series High Availability Configuration Guide(V7)
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Ste
p
Command
Remarks
4. Enable the preemptive mode
for the router in a VRRP group
and configure the preemption
delay time.
vrrp vrid virtual-router-id
preempt-mode [ delay
delay-value ]
By default, the router in a VRRP
group operates in preemptive
mode and the preemption delay
time is 0 seconds, which means an
immediate preemption.
5. Associate a VRRP group with a
track entry.
vrrp vrid virtual-router-id track
track-entry-number [ reduced
priority-reduced | switchover ]
By default, a VRRP group is not
associated with any track entry.
Configuring IPv4 VRRP packet attributes
Configuration guidelines
• You can configure different authentication modes and authentication keys for VRRP groups on an
interface. However, members of the same VRRP group must use the same authentication mode and
authentication key.
• In VRRPv2, all routers in a VRRP group must have the same VRRP advertisement interval.
• In VRRPv3, authentication mode and authentication key settings do not take effect.
• In VRRPv3, routers in an IPv4 VRRP group can have different intervals for sending VRRP
advertisements. The master in the VRRP group sends VRRP advertisements at specified intervals, and
carries the interval in the advertisements. After a backup receives the advertisement, it records the
interval in the advertisement. If the backup does not receive a VRRP advertisement from the master
before the timer (3 x recorded interval + Skew_Time) expires, it regards the master as failed and
takes over as the new master.
Configuration procedure
To configure VRRP packet attributes:
Ste
p
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the authentication
mode and authentication key
for an IPv4 VRRP group to send
and receive VRRP packets.
vrrp vrid virtual-router-id
authentication-mode { md5 |
simple } { cipher | plain } key
By default, authentication is
disabled.
4. Configure the interval at which
the master in an IPv4 VRRP
group sends VRRP
advertisements.
vrrp vrid virtual-router-id timer
advertise adver-interval
The default setting is 100
centiseconds.
To maintain system stability, HP
recommends that you set the VRRP
advertisement interval to be
greater than 100 centiseconds.