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Subnet to Subnet cannot join Domain. DNS forwarding issue?

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HopnDude

IS-IT--Management
Oct 25, 2007
64
US
Okay, I'm pretty green, let's just start off with that!

I'm still in college, almost done with my AS. I haven't even had the proper experience to be doing what I'm doing.

Three Subnets
10.10.10.X
10.20.20.X
10.30.30.X

But to separate Public IP's from Employee IP's they (last guys) also added the following VLANS
10.15.15.X
10.24.24.X
10.35.35.X

Some computers were on Static IP's some DHCP. I'm converting everything to Static IP's and I have two DC's at our main location (10.10.10.X) setup. I haven't made new DC's yet for placement at the other locations.

Q: Can I have a computer at 10.20.20.X looking across subnets over the Point to Point to 10.10.10.X for DNS? Do I need to add a DNS forward on the router? Or will this not work? Or do I need a DC at 10.20.20.X looking back at 10.10.10.X?

I was able to take everything off a particular switch that seems to be setup with 10.15.15.X. So I have my 10.10.10.X computers all setup on the new Domain. But I can't get any computers at another site on 10.20.20.X to join 10.10.10.X Domain. I can ping both IP and Domain Name, but keep getting a connection issue.

I'm going to stop by the 10.10.10.X site tonight, grab an extra server, and set it up for 10.30.30.X subnet (X = 13) and have it connect as a Domain Tree from there and see if it works. If it does, then I need to do the same for 10.20.20.X location. But I'm not sure if this is my exact issue, or if the guy before me has certain ports working with certain IP ranges only. ie 10.24.24.X and won't accept 10.20.20.X traffic on those ports.

Any information would be an EXTREMELY HUGE HELP! I'm sure some of what I just typed seemed like sh*t and out of order to say the leaset. But like I said, I'm about as green as it gets!

Thank you for your time!

As green as I am (with router/switch programming) I'd be willing to give someone my cell number to help walk me through it! I've got a practice gear setup at home (cisco 2400 x2 routers and cisco catalyst 35XX series switch) so I'm heading straight there to try and practice with that!
 

DNS is a unicast udp packet.. you can send it where ever you want... look at your home computer.. your dns is probably NOT on the same subnet as you...


any firewalls inbetween these locations ?
to join a domain there is a bit of WMI traffic that gets dropped by inspection rules of CISCO devices..


also WTF? why move from DHCP to static? i reckon it would be better to move from static TO DHCP ...


We must go always forward, not backward
always up, not down and always twirling twirling towards infinity.
 
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