Re: single Dhcp server on multiple networks
- From: Mike Bird <mgb-debian@xxxxxxxxxxxx>
- Date: Sat, 17 Jan 2009 04:31:42 -0800
On Sat January 17 2009 02:44:09 Ken Teague wrote:
On Wed, Jan 14, 2009 at 09:35:37PM -0800, Mike Bird wrote:
On Thu January 15 2009 13:28:19 Rod James Bio wrote:
I was wondering if anyone had tried to configure a single linux dhcp
server to give IP to different network. We have multiple networks here
in our area and I am thinking of using a single dhcp server to serve
all other networks.
It works fine, e.g.:
Did you have to setup VLANs on your switch to separate the networks, or use
separate switches?
VLANs work. Separate switches work. We normally use VLANs on switches
but separate NICs for each VLAN on servers.
How exactly does the server know to give our IPs for
subnet-X to subnet-X instead of subnet-Y? Does the server have multiple
NICs with different IPs on each?... or does it have a single NIC with
multiple IPs assigned to it?
A DHCP server with multiple NICs hands out DHCP leases in the subnets
associated with each NIC. The subnet is specified in dhcpd.conf, not
the NIC.
If you wanted to support multiple DHCP subnets on a single NIC you'd
probably have to use a static mapping for each MAC address to IP
address:
host foo {
hardware ethernet 01:23:45:67:89:ab;
fixed-address 192.168.99.99;
}
YMMV - I've never tried multiple DHCP subnets on a single NIC.
--Mike Bird
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- From: Rod James Bio
- Re: single Dhcp server on multiple networks
- From: Mike Bird
- Re: single Dhcp server on multiple networks
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