Just for fun...

Also

--C

same result for both

[root@dns01nyc ~]# /etc/init.d/nscd restart
-bash: /etc/init.d/nscd: No such file or directory
[root@dns01nyc ~]# rndc reload business.net
zone reload up-to-date

I did however, issue service named restart on each dns server successfully.

OK update! I can route check this out:

[root@dns01 ~]# traceroute 10.2.10.201
traceroute to 10.2.10.201 (10.2.10.201), 30 hops max, 60 byte packets
1 firewall.business.net (10.1.10.1) 0.700 ms 0.691 ms 0.681 ms
2 10.1.80.2 (10.1.80.2) 69.341 ms 69.364 ms 69.359 ms
3 10.2.10.201 (10.2.10.201) 69.353 ms !X 69.348 ms !X 69.342 ms !X
[root@dns01 ~]#


[root@dns02 ~]# traceroute 10.2.10.201
traceroute to 10.2.10.201 (10.2.10.201), 30 hops max, 60 byte packets
1 firewall.business.net (10.1.10.1) 0.831 ms 0.805 ms 0.785 ms
2 10.1.80.2 (10.1.80.2) 69.257 ms 69.254 ms 69.239 ms
3 10.2.10.201 (10.2.10.201) 69.224 ms !X 69.209 ms !X 69.190 ms !X
[root@dns02 ~]#

[root@dns01nyc ~]# traceroute 10.1.10.201
traceroute to 10.1.10.201 (10.1.10.201), 30 hops max, 60 byte packets
1 firewallnyc.business.net (10.2.10.1) 0.099 ms 0.086 ms 0.102 ms
2 10.1.80.1 (10.1.80.1) 65.747 ms 66.212 ms 66.257 ms
3 dns01.business.net (10.1.10.201) 66.993 ms !X 67.035 ms !X 67.571 ms !X
[root@dns01nyc ~]# traceroute 10.1.10.202
traceroute to 10.1.10.202 (10.1.10.202), 30 hops max, 60 byte packets
1 firewallnyc.business.net (10.2.10.1) 0.219 ms 0.216 ms 0.230 ms
2 10.1.80.1 (10.1.80.1) 76.089 ms 76.093 ms 76.133 ms
3 dns02.business.net (10.1.10.202) 77.853 ms !X 77.886 ms !X 77.939 ms !X
[root@dns01nyc ~]#


I can route from each dns server to one another with no issues

I'm lost everything looks correct......

It seems we just need to tell the dns server(s) 10.1.10.201&202 to use 10.2.10.201 for any dns looks ups on the 10.2.10.0/24 subnet

Then we need to the tell the 10.2.10.201 dns server to use the 10.1.10.201&202 dns servers for any dns lookups on the 10.1.10.0/24 subnet

seems simple enough, but it's beyond me at this point since I am definitely a dns newbie.



Or is there a way to have the (3) DNS servers have entries for both subnets?

currently dns01&02 only have host entries for 10.1.10.0/24
and dns01nyc only has host entries for 10.2.10.0/24

This issue has been resolved by adding a new section for /var/named/forward.business

I added to dns01nyc

;10.1.10.0/24-IPAddr
@ IN A 10.1.10.1
@ IN A 10.1.10.2
etc. etc.
;10.1.10.0/24-hostnames
firewall IN A 10.1.10.1
switch01 IN A 10.1.10.2
etc. etc.

I also added to dns01

;10.2.10.0/24-IPAddr
@ IN A 10.2.10.1
@ IN A 10.2.10.2
etc. etc.
;10.1.10.0/24-hostnames
firewall IN A 10.2.10.1
switch01 IN A 10.2.10.2
etc. etc.

Then
service named restart
rndc reload business.net
chkconfig named on

Now I can ping hosts on either subnet by name without issues. Thnx for everyone's help with this issue.