Vrrp Configuration; Vrrp Configuration Task List - H3C S7500 Series Operation Manual

Operation Manual – VRRP-HA
H3C S7500 Series Ethernet Switches
VRRP packets from the master after a specific period (determined by the
master-down-interval argument), they consider the master is down and initiates the
process to determine the master switch.
You can adjust the frequency in which a master sends VRRP packets by setting the
corresponding
master-down-interval argument is usually three times of the adver-interval argument.
Excessive network traffic or differences between the timers of different switches will
result in master-down-interval timing out and state changing abnormally. Such
problems can be solved through prolonging the adver-interval and setting delay time. If
you configure the preemption delay for a backup switch, the switch preempts the
master after the period specified by the preemption delay if it does not receive a VRRP
packet from the master for the period specified by the master-down-interval argument.
VI. Configuring the VLAN interfaces/Ethernet ports to be tracked for a backup
group
The VLAN interface/Ethernet port tracking function expands the backup group function.
With this function enabled, the backup group function is provided not only when the
interface where the backup group resides fails, but also when other interfaces/Ethernet
ports are unavailable. By executing the related command you can track an
interface/Ethernet port.
When a tracked VLAN interface goes down, the priority of the switch owning the
interface will reduce automatically by a specified value (the value-reduced argument). If
the switches with their priorities higher than that of the current master switch exist in the
backup group, a new master switch will be then determined.
Note:
The Ethernet port tracked can be in or out of the VLAN in whose interface the
backup group resides.
If a switch is the IP address owner, the VLAN interface/Ethernet port tracking
function can not be enabled for the switch.
If a tracked VLAN interface/Ethernet port goes down, when it is up again, the priority
of the corresponding switch is automatically restored.
Each backup group can track up to eight VLAN interfaces/Ethernet ports.

1.2 VRRP Configuration

1.2.1 VRRP Configuration Task List

Complete the following tasks to configure VRRP:
VRRP timers (that
1-6
Chapter 1 VRRP Configuration
is, the adver-interval argument). The