Two subnets, one with PXE clients
Simon Hobson
dhcp1 at thehobsons.co.uk
Wed Mar 3 16:59:25 UTC 2010
Osmany wrote:
>Now the PXE Client boots perfectly with the IP it's meant
>to have, but now I have another problem. Once the PXE client loads, it
>begins configuring itself to load the OS and obviously does a
>DHCPDISCOVER once again because it is no longer a PXE Client but I find
>that the dhcp server assigns an IP from the subnet 10.25.4.0/24 which I
>don't want it to have those IPs because the LTSP server does not have
>any of those IP's.
Well of course, that's exactly how you've configured it !
Once the client boots it's OS, it's not a PXE client, doesn't match
the PXE class, and so is only allowed an IP from the 10.25.4.0/24
subnet. If you want certain clients to continue getting a
192.168.0.0/24 address after boot, then you'll need to add a class
that matches them, and add the appropriate allow/deny statements.
Eg :
class "LTSPClients" {
match if ...
}
shared-network ... {
subnet 10.25.4.0 netmask 255.255.255.0 {
...
pool{
...
allow unknown-clients;
deny members of "PXEClients";
deny members of "LTSPClients";
}
}
subnet 192.168.0.0 netmask 255.255.255.0 {
pool{
...
allow members of "PXEClients";
allow members of "LTSPClients";
}
}
}
The next issue you may find, at least if you boot Windows clients, is
that if the client supplies a Client-ID then it will be considered a
different client and would still be given a different IP. This is a
well known 'problem', and I believe there is finally a means of
getting round it without patching the source in the latest version
4.2.0a ?
--
Simon Hobson
WANTED: "Software CD ROM Kit" for Canon CLBP 360-PS printer (Canon
part no RH6-3612, or possibly RH6-3810, or RH6-3610 might do). I've a
dead HD and need this CD so I can replace the disk and re-install the
printer OS on it.
This is NOT the same thing as the printer drivers to load on the
computer - there's no problem there.
If anyone knows where I might get hold of one I'd be grateful -
requests to Canon drew a blank, it's been out of support for years.
Alternatively, if anyone has one of these and would let me image
their hard disk ...
Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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