R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

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Figure 53 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 service backup.
Figure 54 Stateful failover state relations
Stateful failover configuration task list
To implement stateful failover on two devices, you need to perform the following configurations:
Internet
Internal
network
Router A
Host A Host B
Router B
Failover link
GE0/0/2 GE0/0/2
GE0/0/1 GE0/0/1
GE0/0/3 GE0/0/3
Silence
The device is started
Independence
The silence timer
expires
Synchronization
State negotiation succeeds
State negotiation
fails