Hi,

On 5/26/09 10:10 PM, "Raj Singh" wrote:

> Hi Vijay,
> 
> I have some question on ikev2-redirect-10 draft.
> 
> In section 5,
> ------
>     Once the client sends an acknowledgment to the gateway, it SHOULD
>    delete the existing security associations with the old gateway by
>    sending an Informational message with a DELETE payload.  The gateway
>    MAY also decide to delete the security associations without any
>    signaling from the client, again by sending an Informational message
>    with a DELETE payload.  However, it should allow sufficient time for
>    the client to setup the required security associations with the new
>    security gateway.  This time period should be configurable on the
>    gateway.
> -------
> 
> Suppose after sending N[REDIRECT] in case of Gateway initiated redirect,
> there is a time gap for client to delete old SA and create new SA with
> redirected Gateway.
> 
> During this time, IKE REKEY occurs from gateway or client, what should be
> the behavior, should it REKEY on old SA or defer the rekey ?

The rekey should be deferred. The IKEv2 SA is going to be torn down anyway.

> Also, when deleting IKE SA, due to redirect, is there any way to know that
> this delete is sue to redirect ?

Well, the gateway redirected the client. If following that, there is a
delete from the client, the gateway would know that the IKEv2 SA is being
deleted because it redirected the client.

Anyway, does it matter?

Vijay

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