H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 837)

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Item Description
Backup VLAN
Set the backup VLAN.
After a VLAN is configured as a backup VLAN, the interfaces in the VLAN are used
to transmit stateful failover packets.
IMPORTANT:
• A device uses VLAN tag+protocol number to identify stateful failover packets,
and broadcasts stateful failover packets to the peer within the backup VLAN.
Therefore, H3C recommends that you not configure other services (such as
voice VLAN) for a backup VLAN to avoid impact on the operation of stateful
failover.
• An interface added to the backup VLAN can transmit other packets besides
stateful failover packets.
Table 268 Field description
Field Description
NAS Device ID
Configure the NAS Device ID used for AAA authentication.
Configure the NAS Device IDs of the two devices to 1 and 2.
If you modify the NAS Device ID, all online clients on the device are forced offline.
Stateful failover configuration example
Network requirements
In Figure 588 , the IP address of VLAN-interface 1 on AC 1 is 8.190.1.60/16, and that on AC 2 is
8.190.1.61/16. The client and AP each obtain an IP address from the DHCP server at 8.190.0.13/16, and
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 867 Network diagram