Инструкции По Установке для 3com S7906E

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To do… 
Use the command… 
Remarks 
Create a VRRP group and 
configure its virtual IPv6 
address 
vrrp ipv6 vrid virtual-router-id 
virtual-ip
 virtual-address 
link-local 
Required 
No VRRP group is created by 
default. 
The first virtual IPv6 address of 
the VRRP group must be a link 
local address. Only one link 
local address is allowed in a 
VRRP group, and must be 
removed the last. 
 
 
When VRRP works in the load balancing mode, the virtual IPv6 address cannot be the same with 
IPv6 address of any interface in the VRRP group, that is, in the load balancing mode, the VRRP 
group does not have an IP address owner. 
For the S7900E series, the maximum number of IPv6 VRRP groups on a switch is 128, and the 
maximum number of virtual IPv6 addresses for a VRRP group is 16. 
A VRRP group is removed after you remove all the virtual IPv6 addresses in it. In addition, 
configurations on that VRRP group no longer take effect. 
Removal of the VRRP group on the IP address owner will cause IP address collision. In such a 
case, it is recommended to modify the IPv6 address of the interface on the IP address owner to 
resolve the collision. 
 
Configuring Router Priority, Preemptive Mode and Tracking Function 
Configuration prerequisites 
Before configuring these features, you should first create a VRRP group and configure a virtual IPv6 
address. 
Configuration procedure 
By configuring router priority, preemptive mode, interface tracking, or a Track object, you can decide 
which router in the VRRP group serves as the Master. 
Follow these steps to configure router priority, preemptive mode and interface tracking: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
 
Enter the specified interface 
view 
interface interface-type 
interface-number
 
— 
Configure the priority of the 
router in the VRRP group 
vrrp ipv6 vrid virtual-router-id 
priority priority-value 
Optional 
100 by default 
Configure the router in the 
VRRP group to work in 
preemptive mode and 
configure preemption delay of 
the VRRP group 
vrrp ipv6 vrid virtual-router-id 
preempt-mode [ timer delay 
delay-value ] 
Optional 
The router in the VRRP group 
works in preemptive mode and 
the preemption delay is zero 
seconds by default.