R2511-HP MSR Router Series High Availability Configuration Guide(V5)

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• 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 for the virtual MAC address,
and 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.
The format of these packets is similar to that of the advertisement in VRRP standard mode except that a
packet used in load balancing mode is appended with an option field, which contains information for
load balancing.
Configuring IPv4 VRRP
IPv4 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 IPv4 VRRP:
Task Remarks
Specifying an IPv4 VRRP operating mode Optional.
Specifying the IPv4 VRRP version Optional.
Specifying the type of MAC addresses mapped to
virtual IP addresses
Optional.
This configuration does not apply to VRRP load
balancing mode.
Creating a VRRP group and assigning a 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
operates in load balancing mode.
Configuring IPv4 VRRP packet attributes Optional.
Enabling the trap function for VRRP Optional.
Specifying an IPv4 VRRP operating mode
A VRRP group operates in one of the following modes:
• Standard mode—Only the master can forward packets.
• Load balancing mode—All members that have an AVF can forward packets.
After the VRRP working mode is specified on a router, all VRRP groups on the router operate in the
specified working mode.
To configure the VRRP working mode: