华为交流机心跳线在备机上输入下令，查询是否为双主
Backup为备用
Master为主用

[**-SW02-S9306]dis vrrp br
Total:19 Master:0 Backup:19 Non-active:0
VRID State Interface Type Virtual IP

2 Backup Vlanif1002 Normal 10...
3 Backup Vlanif1003 Normal 10...
4 Backup Vlanif1004 Normal 10...
5 Backup Vlanif1100 Normal 10...
6 Backup Vlanif1200 Normal 10...
7 Backup Vlanif1007 Normal 10...
71 Backup Vlanif61 Normal 10...
72 Backup Vlanif71 Normal 10...
73 Backup Vlanif81 Normal 10...
74 Backup Vlanif82 Normal 10...
75 Backup Vlanif83 Normal 10...
76 Backup Vlanif84 Normal 10...
77 Backup Vlanif1011 Normal 10...
78 Backup Vlanif1012 Normal 10...
100 Backup Vlanif100 Normal 10...
200 Backup Vlanif200 Normal 10...
230 Backup Vlanif230 Normal 10...
231 Backup Vlanif301 Normal 10...
232 Backup Vlanif302 Normal 10...*