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List:       dhcp-users
Subject:    Re: Quick Failover
From:       Glenn Satchell <Glenn.Satchell () uniq ! com ! au>
Date:       2007-05-23 12:51:13
Message-ID: 200705231251.WAA29126 () lager ! uniq ! com ! au
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>Date: Tue, 22 May 2007 10:45:57 -0500
>From: Keith Neufeld <keith.neufeld@wichita.edu>
>Subject: Re: Quick Failover
>
>On May 22, 2007, at 10:24 AM, Glenn Satchell wrote:
>> Except all the clients know the address of the old dhcp server, so  
>> when
>> they try to renew by directly contacting the dhcp server they will
>> fail. When the lease expires the client will fall back to DHCPDISCOVER
>> and broadcast for a dhcp server, they will find the new one, and it  
>> can
>> give them back the IP address they had before.
>
>At T2 (7/8 of lease duration), they should *broadcast* a DHCPREQUEST  
>and renew their leases with no interruption of service, yes?

It's been a long time since I read RFC2131, so forgive my oversite here :)

If the client does behave that way then there should be no problem at all.

regards,
-glenn

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