3.5 Fast Failover Client Details

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Using the notation as specified in [RFC2409] section 3.2, the generalized form of an IKE phase 1 exchange is as shown in the following figure. For more information, see [RFC2409] section 5.

IKE phase 1 exchange

Figure 4: IKE phase 1 exchange

The description in this section uses the message numbers from the protocol sequence diagram.