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BIND / DNS and subnetting/subdomaining

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3 replies

by kampmann

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HI,

I am running a Subdomain within a greater institution. This includes a
BIND primary nameserver (the computer being a router at the same time) on our side being
authoritative for the domain

thg.x.de

Now this node with the NS went down and we separated router and ns-functions.

without establishing a new ns instead
useing the "/etc/hosts" table :-)

the people responsible for "x.de" said
we could not have a ns established
because our net was not subnetted.

the netaddress is something like 172.22.0.0. (class B - no CIDR so far)

and my point and the question to you is:

when we use part of that net 172.22.0.0 (say from 0 to 8192 nodes with CIDR),
can we establish a subdomain without
subnetting, which means: can we establish our "old" nsbeing authoritative for these
computers, having

thg.x.de as domain (subdomain "thg")

I would appreciate a fast answer thank you in advance

J?rg

3 replies

by cpfeiffe

The short answer is yes. However, this only works if the folks at x.de are willing to deligate thg as a sub-domain. I don't understand what they mean by you can't establish a subdomain becuase your network is not subnetted. DNS does not care about physical network structure. It is merely a mapping aid for interchanging numbers and names. If you can give more details or get a better explanation from x.de feel free to email it to my alias and I may be able to help out more. I've done a lot of things with DNS that aren't normal practice including making arpa domains works on multi-segmented networks, which might be what x.de is referring to as a problem. A lot of providers don't know how to handle this or don't want to handle this. I'm sure it is possible to accomplish what you want, but again you will have to present something acceptable to x.de because the thg sub-domain will only work correctly if they deligate it to your name server.

by kampmann

Hi,
this is exactly what I expected from reading the DNS&BIND book by Albith et.al.
Thank you so much.
And I will certainly come back to your offer in case there are more problems to
discuss ...
Again: Thank you very much

J?rg

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