Reverse Lookup zone

[Keen to Learn]

Hello All,
I am pretty new to this networking stuff. Our netwrok admin quit the
job and since I knew a littel bit about networks, I am handeling the
network.

I have a NS1 server and would like to add a Ns2 to be its backup.

I followed the wizard for forward look up zones and select standard
secondary on the third screen and was able to create forward lookup
zones in Ns2 and they are same as in NS1

When I tried to follow the Wizard for reverse lookup zone it ask me
for Network ID, when I try to put in my network ID, If I put in x.y.z
it creates a reverse lookup zone name as z.y.x.in-addr.arpa. I think
this is the standard.

BUt here is my problem.

In my existing NS1 server, I have 2 reverse lookup zone as

11.12.145.0 /25 and 11.13.136.32 /37 {these are just imaginery
numbers)
Does any one know how do we create revrse lookup zone like the one I
already have.

Any help is really appreciated
Thanks

 

[Herb Martin]

Hello All,
I am pretty new to this networking stuff. Our netwrok admin quit the
job and since I knew a littel bit about networks, I am handeling the
network.

I have a NS1 server and would like to add a Ns2 to be its backup.

I followed the wizard for forward look up zones and select standard
secondary on the third screen and was able to create forward lookup
zones in Ns2 and they are same as in NS1

And point NS2 zones to the NS1 as master.

When I tried to follow the Wizard for reverse lookup zone it ask me
for Network ID, when I try to put in my network ID, If I put in x.y.z
it creates a reverse lookup zone name as z.y.x.in-addr.arpa. I think
this is the standard.

That's standard -- reverse zones are named BACKWARDS so
that the hierarchical lookup will still be from BIG on the RIGHT
to SMALL on the LEFT like a DNS name (most specific part on
the left.)

BUt here is my problem.

In my existing NS1 server, I have 2 reverse lookup zone as

11.12.145.0 /25 and 11.13.136.32 /37 {these are just imaginery

Yes, they are since /37 is more bits than exist.

There are also special steps you must take for reverse zones
that don't end on octet boundaries, e.g., 11.12.145.0/24