H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 23)

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VRRP load balancing mode defines the following types of packets:
• Advertisement—VRRP advertises VRRP group state and information about the VF that is in active
state. Both the master and the backups periodically send VRRP advertisements.
• Request—If a backup is not the VF owner, it sends a request to ask the master to assign a virtual
MAC address.
• Reply—When receiving a request, the master sends a reply to the backup router to assign a virtual
MAC address. After receiving the reply, the backup router creates a VF that corresponds to the
virtual MAC address, and then becomes the owner of this VF.
• Release—When a VF owner fails, the router that takes over its responsibility sends a release after
a specified period of time to notify the other routers in the VRRP group to delete the VF of the failed
VF owner.
NOTE:
The format of these packets is similar to that of the advertisement in VRRP standard protocol mode except
that a packet used in load balancing mode is appended with option field, which contains information for
load balancing.
Configuring VRRP
VRRP configuration task list
To form a VRRP group, perform the following configurations on each device in the VRRP group.
Complete these tasks to configure VRRP for IPv4:
Task Remarks
Configuring a VRRP working mode Optional.
Specifying the type of MAC addresses mapped to
virtual IP addresses
Optional.
When VRRP is operating in load balancing mode,
this configuration is not effective.
Creating a VRRP group and configuring virtual IP
address
Required.
Configuring router priority, preemptive mode and
tracking function
Optional.
Configuring VF tracking
Optional.
The VF tracking function is effective only when VRRP
is operating in load balancing mode.
Configuring VRRP packet attributes Optional.
Enabling VRRP traps Optional.
Configuring a VRRP working mode
A VRRP group can operate in either of the following two modes:
• Standard protocol mode—Only the master can forward packets.