[Autogenerated] a sub domain is simply
part of a domain with its own s away
record. The choices of the naming
structure is usually more of a marketing
decision than a technical one. Global
Tickets is a subsidiary of Globomantics.
They could be a sub domain of the parent
company or have their own. To me, they
could sub domain even more down to all
events or individual band names. Now Jaden
needs to make a sub domain for events dot
g t g m dot com. Marketing wants to test
out making a sub domain for each of the
different venues that Global ticket works
with. They think it will make it easier
for customers to see who's playing where
and therefore by more tickets. We'll start
with the Fox here in Atlanta. Here we are,
this primary. We'll go ahead and start a
fresh capture and then add a new sub
domain. I'll go back into my DNA, snap in
and add a new domain to the g t dot g. M.
Domain marketing wants us to make
different domains for the venues that we
use. The Fox is a beautiful Art Deco
theater here in Atlanta, so we'll add it.
First, we'll do a right-click and add new
domain ain. Now that we have it created,
let's put in a new record. I'll put in the
three W's and the IP address of the sales
server. Let's see how that gets populated
to the secondary. I'll use our new filter
for incremental transfer. There's are to
51 Query and our S O a record were up to
serial number 11. Now, remember that
serial number is what the secondary uses
to let the primary No. Hey, this is the
version of the database that I have. If
there's something new, I need to have it.
And we know there's something new, because
the primary is the one who sent the
secondary the zone change information in
the first place. Serve a response. He's a
serial number 12, and there's our new
information. Www dot the fox dot gt dot g
m dot com. I think marketing is going to
have to rethink that. That's a lot of dots
in one address. Then we also have the zone
update for the Poynter record. Now,
remember, that's a different zone. So the
serial number is also different. It hasn't
had as many updates because only host
records have pointer records, not the
other. New records liken SRV record that
we've added those won't update those won't
have a corresponding PTR record and
therefore not an increments in the serial
number. That's why it's lower. But with
our new edition of www were up to number
four for the serial number for the
Pointers own record. Now Jaden Hardness
admin wants to test it. We'll go ahead and
do a ping. For w w w dot the fox dot gt
dot g m dot com We have our DNS resolution
to 10 12.3 dot eight. Jayden had a busy
time of it, but now he has the primary,
secondary and sub domains set up on the
servers and has even added a few records
for testing. Using wire shark to see how
everything worked makes it a lot easier to
follow up next. Troubleshooting DNA's. It's time to look at more packets