No subject

server to every network segment it should serve directly. The most common w=
ay to install a dhcp-server in a larger (or even small) environment is to p=
lace the server in it's own network segment, and configure if Cisco:=0A=
=0A=
interface VlanXXX (every vlan you have clients to serve)=0A=
 ip helper-address x.x.x.x (ip to dhcp-server).=0A=
!=0A=
=0A=
You then just configure a:=20=0A=
   subnet [subnet addr] netmask [mask] {=0A=
            #some  options here=0A=
=0A=
             range [range start ip] [range end ip];=0A=
             }=0A=
=0A=
For each vlan in the server.=20=0A=
=0A=
You can even use the "shared-network" model if you have vlan's with more th=
en one IP-network.=0A=
=0A=
Regards Anders Rosendal=0A=
=0A=
-----Ursprungligt meddelande-----=0A=
Fr=E5n: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] F=F6r =
li jun=0A=
Skickat: den 24 juli 2008 05:01=0A=
Till: dhcp-users at isc.org=0A=
=C4mne: RE: matching on giaddr field=0A=
=0A=
Our experience is here=0A=
=0A=
It's no need to add card,just split your network into several VLAN,For=0A=
example:VLAN1,VLAN2,VLAN3=0A=
on the DHCP server ,we can do like this:=0A=
=0A=
shared-network vlan1{=0A=
   subnet [subnet addr] netmask [mask] {=0A=
            #some  options here=0A=
=0A=
             range [range start ip] [range end ip];=0A=
             }=0A=
}=0A=
=0A=
shared-network vlan2{=0A=
   subnet [subnet addr] netmask [mask] {=0A=
            #some  options here=0A=
=0A=
             range [range start ip] [range end ip];=0A=
             }=0A=
}=0A=
=0A=
shared-network vlan3{=0A=
   subnet [subnet addr] netmask [mask] {=0A=
            #some  options here=0A=
=0A=
             range [range start ip] [range end ip];=0A=
             }=0A=
}=0A=
=0A=
=0A=
and also your  should config every switch,divide every swith port into=0A=
specify VLAN=0A=
---------------------=0A=
LIJUN=0A=
CN=0A=
=20=0A=
=0A=
> -----Original Message-----=0A=
> From: dhcp-users-bounce at isc.org=20=0A=
> [mailto:dhcp-users-bounce at isc.org] On Behalf Of fadey=0A=
> Sent: Wednesday, July 23, 2008 7:32 PM=0A=
> To: dhcp-users at isc.org=0A=
> Subject: matching on giaddr field=0A=
>=20=0A=
> Hi, everyone=0A=
>=20=0A=
> I have varios cisco routers that support dhcp relay. I'd like=20=0A=
> to use a single dhcpd to serve IPs to all devices behind=20=0A=
> those routers. The problem is that devices from a specific=20=0A=
> router have to get the IPs from specific range. Is there a=20=0A=
> way to do it with ISC dhcpd?=0A=
>=20=0A=
> For now, the only solution I see is keep adding a separate=20=0A=
> network card for every IP range I have to serve and creating=20=0A=
> a "shared network" for every range. However this doesn't=20=0A=
> scale well (I might run out of avaliable slots for network cards).=0A=
>=20=0A=
> I was wondering if it is possible to create a separate class=20=0A=
> for every range matching on giaddr field. However I'm neither=20=0A=
> sure if it is possible nor if that can guarantee that a=20=0A=
> DISCOVER came from a device behind the router that giaddr is=20=0A=
> stating it came from.=0A=
>=20=0A=
> Thanks in advance.=0A=
>=20=0A=
>=20=0A=
=0A=
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