H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 835)

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Figure 864 Network diagram for stateful failover
Stateful failover states
Stateful failover includes the following states:
• Silence—The device has just started, or is transiting from synchronization state to independence
state.
• Independence—The silence timer has expired, but no failover link is established.
• Synchronization—The device has completed state negotiation with the other device and is ready for
data backup.
The following figure shows state relations.
Figure 865 Stateful failover state diagram
Configuration guidelines
When you configure stateful failover, follow these guidelines:
• You must configure the AC and AP to support backup function to make sure the traffic can
automatically switch to the other device if one device fails. For more information, see "Advanced
settings."
GE1/0/2
Tagged VLAN: 2
AC 1
Internet
Host
AC 2
Failover link
AP
VLAN 2
GE1/0/2
Tagged VLAN: 2