bind and dhcp updates

Simon Waters Simon at wretched.demon.co.uk
Fri Oct 31 21:21:37 UTC 2003


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Landy Atkinson wrote:
>
> I've wondered the same thing.  My reason for=20
> wanting this is that in a Windows98 peer-to-peer=20
> network (i.e. no Windows server providing WINS=20
> services), "My Network Places" doesn't find other=20
> clients unless they are listed in a Hosts file or=20
> can resolve in our local DNS.

This only happens if they are on another network, if it is just
happening you have other problems.

> I've thought about=20
> switching to DHCP for the 40 client machines at=20
> the small school I help out with, but haven't=20
> because then Hosts and DNS would not be current.

The point being why do you want peer to peer networking between 40
machines, sounds a recipe for disaster . In most environments you
allocate fixed IP's to those offering the services (print servers, file
servers, routers, proxies), and those that get dynamic IP addresses
don't matter as they don't provide services that other clients want. You
don't need others to know your name if no one ever calls you!

One of my local schools just allocates every host a static IP based on
MAC address (via DHCP), in reality even a school with 100's of PCs isn't
adding them so fast that logging the MAC addresses by hand and
allocating an IP takes up a significant amount of the time of the admin
in adding new machines. And he likes to know when people bring strange
computers in and plug them into his network.

> Can someone please point to where DHCP / BIND=20
> interaction setup is documented.

Dynamic DNS is documented in the Administrator reference manual, get it
up and working with "nsupdate" as a client. The changes you need to make
to dhcpd.conf are under documented, the magic phrase for Google is
"ddns-update-style", but be warned there are many ways of doing it, and
not all of them are sensible.

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