R3166-R3206-HP High-End Firewalls High Availability Configuration Guide-6PW101

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Figure 17 Network diagram for stateful failover
Introduction to stateful failover states
Stateful failover includes the following states:
• Silence: Indicates that the device has just started and is waiting for the stable running of the system,
or the state between synchronization and independence.
• Independence: Indicates that the silence timer expires, but no failover link is established.
• Synchronization: Indicates that the device has completed state negotiation with the other device
and is ready for data backup.
The following figure shows state relations.
Figure 18 Stateful failover state diagram
Internet
Internal
network
Firewall A
Host A Host B
Firewall B
Failover link
GE1/2 GE1/2
GE1/1 GE 1/1
GE1/3 GE1 /3
Silence
The device is started
Independence
The silence timer
expires
Synchronization
State negotiation succeeds
State negotiation
fails