H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 41)

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NOTE:
When configuring stateful failover to support DHCP services, the address pools configured on the active
and standby servers must be consistent.
Figure 14 Network diagram for stateful failover
Stateful failover states
The stateful failover states include the following:
• Silence—Indicates that the device has just started, or is transiting from synchronization state to
independence state.
• Independence—Indicates that the silence timer has expired, but no failover link is established.
• Synchronization—Indicates that the device has completed state negotiation with the other device
and is ready for service backup.
Figure 15 Stateful failover state relations
Internet
Internal
network
Device A
Host A Host B
Device B
Failover link
GE1/2 GE1/2
GE1/1 GE1/1
GE1/3 GE1/3