[Failover]

[Łukasz Siemiradzki]

Hello,

2013/2/21 Cedric OLLIVIER <ollivier.cedric at gmail.com>

> Hello,
>
> I am focusing on deploying the two DHCP servers which share the same
> address pool (failover) at different shedulings.
> I suppose the primary should be launched first but the backup server could
> be the first available in some cases.
>

What you mean by different schedulings? Usually, primary and failover
operates on the same time.


> Could you, please, confirm that the secondary cannot be launched first?
>
I have already tested this case and the leases offered by the secondary are
> incorrect and rejected by clients.
>
> Here is the output of the dhclient resulting from this test :
>
> root at client:~# dhclient -v eth0
> Internet Systems Consortium DHCP Client 4.1.1-P1
> Copyright 2004-2010 Internet Systems Consortium.
> All rights reserved.
> For info, please visit https://www.isc.org/software/dhcp/
>
> Listening on LPF/eth0/b2:4a:6c:3d:26:d7
> Sending on   LPF/eth0/b2:4a:6c:3d:26:d7
> Sending on   Socket/fallback
> DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
> DHCPOFFER from 192.168.0.2
> DHCPREQUEST on eth0 to 255.255.255.255 port 67
> DHCPACK from 192.168.0.2
> *no expiry time on offered lease.*
> DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
> DHCPOFFER from 192.168.0.2
> DHCPREQUEST on eth0 to 255.255.255.255 port 67
> DHCPACK from 192.168.0.2
> *no expiry time on offered lease.*
>
>
Could you please include dhcpd.conf file.


> I don't find any solution to correct that and I was supprised
> The version used is provided by Debian.
>
> Thank you. Best regards,
> Cédric OLLIVIER
>
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>

Best regards / Pozdrawiam
Łukasz Siemiradzki
-- 

"Omnes homines natura scire desiderant"
                                           Aristotelis
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