R3204P16-HP Load Balancing Module High Availability Configuration Guide-6PW101

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NOTE:
• You can confi
g
ure the VF trackin
g
function when VRRP works in either the standard protocol mode or
the load balancing mode; however, the VF tracking function is effective only when VRRP works in the
load balancing mode.
• Do not configure VF tracking on an IP address owner.
• By default, the weight of a VF is 255, and its lower limit of failure is 10.
• If the weight of a VF owner is higher than or equal to the lower limit of failure, the priority of the VF
owner is always 255 and does not chan
g
e with the wei
g
ht value. Therefore, in case of an uplink failure,
only when the weight of the VF owner decreases a properly specified value and becomes lower than the
lower limit of failure, can another VF takes over the VF owner's work and becomes the AVF.
Configuring VRRP packet attributes
Configuration prerequisites
Before configuring the relevant attributes of VRRP packets, you should first create a VRRP group and
configure a virtual IP address for it.
Configuration procedure
Follow these steps to configure VRRP packet attributes:
To do… Use the command…
Remarks
Enter system view system-view —
Enter the specified interface
view
interface interface-type
interface-number
—
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
Configure the time interval for
the Master in the VRRP group to
send VRRP advertisement
vrrp vrid virtual-router-id
timer advertise
adver-interval
Optional
1 second by default
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 may configure different authentication modes and authentication keys for the VRRP
g
roups on an
interface. However, the members of the same VRRP
g
roup must use the same authentication mode and
authentication key.
• Excessive traffic or different timer setting on routers can cause the Backup timer to time out abnormall
y
and trigger a change of the state. To solve this problem, you can prolon
g
the time interval to send VRRP
packets.