two dhcp problem
Simon Hobson
dhcp1 at thehobsons.co.uk
Fri Jan 22 21:02:31 UTC 2010
José Ortiz wrote:
>I had only one authoritative dhcp server, which
>is configure to give dhcp parameters only to
>known clients and it works correctly, the
>configuration only consist in one subnet a we
>add all know clients using a host declaration.
>We decide to add other dhcp server in a
>different subnet that share the same fisycal
>networt with the fist one, the configuration is
>the same in both servers only differs the subnet
>and the set of clients. All linux and mac
>clients are able to adquire dhcp paramtres from
>the server where they are known clients, but
>some windows clients if they recieve dhcpnack
>from the server where they are unknow clients
>always keep waiting and never adquires dhcp
>information and if i stop the server that
>doesn´t know thier, They immediatly get the dhcp
>parameters. Someone has been a similar problem?
You need to define both subnets on both servers.
When a client in subnet A tries to acquire a
lease, server A will offer and address and server
B will ignore it. The client will then request
the address, but server B will always DHCP-NAK it
as being invalid for it's subnet.
So you need to define subnet B on server A, and
subnet A on server B - they can both be empty
declarations like this :
subnet a.b.c.0 netmask 255.255.255.0 {
}
Once you do this, each server will silently
ignore clients when they request an address on
the 'other' subnet.
PS - don't worry too much about your English,
it's better than a lot of English people can be
bothered to write !
--
Simon Hobson
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