Operation Manual – Auto Detect 
Quidway S3900 Series Ethernet Switches-Release 1510  Chapter 2  Auto Detect Implementation
 
Huawei Technologies Proprietary 
2-3 
[Quidway A-detect-group-8] detect-list 1 ip address 10.1.1.4 nexthop 
192.168.1.2 
[Quidway A-detect-group-8] quit 
# Enable the static route when the detecting group is reachable. Disable the static 
route when the detecting group is unreachable. 
[Quidway A] ip route-static 10.1.1.4 24 192.168.1.2 detect-group 8 
2.3  Auto Detect Implementation in VRRP 
 
  Note: 
Currently, auto detect implementation in VRRP is only supported on S3900-EI series 
switches. 
 
You can control the priorities of VRRP backup groups according to auto detect results 
to enable automatic switch between the master and the backup switch as follows: 
z  Decrease the priority of a VRRP backup group when the result of the detecting 
group is unreachable. 
z  Resume the priority of a VRRP backup group when the result of the detecting 
group is reachable. 
2.3.1  Configuring the Auto Detect Function for VRRP 
 
  Note: 
You need to create the detecting group and perform VRRP-related configurations 
before the following operations.