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List:       busybox
Subject:    R: dhcp renew
From:       Michele Marcon <M.Marcon () riello-ups ! com>
Date:       2011-04-18 14:51:56
Message-ID: CCCA24BDA5522D459C23CD1C82DF9915A5AA93BB () LEGEX ! riello ! group
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On large networks, it may be a good practice to have large lease time but smaller \
renew and rebind time.

The large lease time is because in case something goes wrong with the dhcp server the \
devices can keep their address for a long time. With smaller renew and rebind time it \
is possible to have a high turnover for the addresses, and if a device is connected \
for little time it does not waste (keep busy) its address for a long time when it's \
not connected.

If udhcp supports these options is possible to have all of this (large lease time \
coupled with fast turnover).



Michele Marcon
Centro Ricerche
RPS SpA
Viale Europa, 7
37045 Legnago (VR)
Tel. +39 0442 635811 - Fax. +39 0442 635934 - Mobile: +39 335 1233317
Skype Id:  - VoIp:
E-mail: M.Marcon@riello-ups.com
Web: http://www.riello-ups.com
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-----Messaggio originale-----

Da: Denys Vlasenko [mailto:vda.linux@googlemail.com]
Inviato: sabato 18 dicembre 2010 3.11
A: busybox@busybox.net
Cc: Michele Marcon
Oggetto: Re: dhcp renew

On Thursday 16 December 2010 14:16, Michele Marcon wrote:
> Hi,
> I have a question about udhcp client.
> Apparently the renewing which the DHCP server sends to the udhcp client is ignored.
> The udhcp sends at half leasetime a renewing.
> Is this by design, or there is a configuration for actually using the renew \
> parameter?

Currently udhcpc ignores options 58 and 59 (Renew time and Rebind time).
This can be changed. Why do you need it?

--
vda




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