H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 628)

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the ACs perform portal authentication through the IMC server. Configure stateful failover on AC 1 and
AC 2 so that when one AC fails, the other AC can take over portal and other services.
Figure 656 Network diagram
NOTE:
The portal group configuration on the two ACs must be consistent.
Configuring AC 1
1. Configure the backup AC and enable fast backup:
a. Select Advanced > AC Backup from the navigation tree to enter the default Setup page, as
shown in
Figure 657 .
b. Select the IPv4 box and type the IP address of AC 2 (8.190.1.61) as the backup AC address,
and select enable from the Fast Backup Mode list.
c. Click Apply.