Multihomed pc
Simon Hobson
dhcp1 at thehobsons.co.uk
Sun Nov 12 10:58:44 UTC 2006
Crisfalusi Dan wrote:
>I have a single default router per network ... but I have a large network
>and is not flat ...
Ahh, you have a shared network according to your config file, that
makes a HUGE difference !
>By the way your sugestion is not working. The server offers only the first
>ip in the list ...
It will do, you didn't say that you have a shared network.
>Please help me a litle bit more ...
>I'll show you below something from my dhcpd.conf file ...
>
>In the tests that I done with ibm4 the server identified correctly the host
>and the gateway but offered always the first ip in the list (I rotated them
>to check this) ...
>
>Please give me more sugestions ...
>
>10x
>
>.......
>deny unknown-clients;
>
>shared-network Timisoara {
> subnet 172.19.130.0 netmask 255.255.255.0 {
> option domain-name "electricabanat.ro";
> option time-offset -18000; # Eastern Standard Time
> default-lease-time 72000; # 20 de ore
> max-lease-time 72000; # 20 de ore
> use-host-decl-names on;
> option routers 172.19.130.254;
> option subnet-mask 255.255.255.0;
> option domain-name-servers 172.19.129.16, 172.19.129.17;
> }
> subnet 172.19.131.0 netmask 255.255.255.0 {
> option domain-name "electricabanat.ro";
> option time-offset -18000; # Eastern Standard Time
> default-lease-time 72000; # 20 de ore
> max-lease-time 72000; # 20 de ore
> use-host-decl-names on;
> option routers 172.19.131.254;
> option subnet-mask 255.255.255.0;
> option domain-name-servers 172.19.129.16, 172.19.129.17;
> }
>
> subnet 172.19.132.0 netmask 255.255.255.128 {
> option domain-name "electricabanat.ro";
> option time-offset -18000; # Eastern Standard Time
> default-lease-time 72000; # 20 de ore
> max-lease-time 72000; # 20 de ore
> use-host-decl-names on;
> option routers 172.19.132.126;
> option subnet-mask 255.255.255.128;
> option domain-name-servers 172.19.129.16, 172.19.129.17;
> }
> subnet 172.19.132.128 netmask 255.255.255.192 {
> option domain-name "electricabanat.ro";
> option time-offset -18000; # Eastern Standard Time
> default-lease-time 72000; # 20 de ore
> max-lease-time 72000; # 20 de ore
> use-host-decl-names on;
> option routers 172.19.132.190;
> option subnet-mask 255.255.255.192;
> option domain-name-servers 172.19.129.16, 172.19.129.17;
> }
>
> subnet 172.19.133.0 netmask 255.255.255.192 {
> option domain-name "electricabanat.ro";
> option time-offset -18000; # Eastern Standard Time
> default-lease-time 72000; # 20 de ore
> max-lease-time 72000; # 20 de ore
> use-host-decl-names on;
> option routers 172.19.133.62;
> option subnet-mask 255.255.255.192;
> option domain-name-servers 172.19.129.16, 172.19.129.17;
> }
>.......
>}
>
>......
># Plimbareti
>group {
> host ibm4 { hardware ethernet 00:10:c6:dd:01:ae; fixed-address
>172.19.132.81
>, 172.19.130.248, 172.19.133.132; }
OK, first lets be quite certain, do you have a shared network ? In
other words, are all these subnets ON THE SAME WIRE ? Ie, can you
take a device, plug it into the network, and move it to any of the
subnets by giving it the appropriate network settings - without
moving switch port or altering VLAN assignments ?
Sorry to labour the point, but's it's come up time and time again.
Looking back at your original post :
>I have pc's that move from time to time in a relative large network
>(with tens of routers).
I believe that you do NOT have a shared network - but we need to
confirm that before going any further.
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