H3C Technologies H3C SecPath F1000-E - Manual (Page 19)

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NOTE:
•
You can configure the VF tracking function when VRRP works in either standard protocol mode or load
balancing mode; however, the VF tracking function is effective only when VRRP works in 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 change with the weight value. Therefore, in case of an uplink failure,
another VF takes over the VF owner's work and becomes the AVF only when the weight of the VF owner
decreases a properly specified value and becomes lower than the lower limit of failure.
Configuring VRRP Packet Attributes
Configuration prerequisites
Before configuring the relevant attributes of VRRP packets, 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 advertisements
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 groups on an
interface. However, the members of the same VRRP group 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 abnormally
and trigger a change of the state. To solve this problem, prolong the time interval to send VRRP packets.