[JDMils]

I have two servers in p.com.au called Playcorp1 [192.168.10.8] & Playcorp2 [192.168.10.11]. I have one server in s.com.au called Proxima [192.168.20.20].

When logged onto Proxima, I can ping Playcorp2:

C:\>ping playcorp2

Pinging playcorp2.s.com.au [192.168.10.11] with 32 bytes of data:

Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time=1ms TTL=127

Ping statistics for 192.168.10.11:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms

C:\>

I can not, however, ping Playcorp1:

C:\>ping playcorp1
Ping request could not find host playcorp1. Please check the name and try again.


C:\>

I can, tho, ping Playcorp1 if I use its FQDN:

C:\>ping playcorp1.p.com.au

Pinging playcorp1.p.com.au [192.168.10.8] with 32 bytes of data:

Reply from 192.168.10.8: bytes=32 time<1ms TTL=127
Reply from 192.168.10.8: bytes=32 time=5ms TTL=127
Reply from 192.168.10.8: bytes=32 time=1ms TTL=127
Reply from 192.168.10.8: bytes=32 time<1ms TTL=127

Ping statistics for 192.168.10.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 5ms, Average = 1ms

C:\>

I've checked the DNS server on Proxima, and under DNS\PROXIMA\Forward Lookup Zones\p.com.au, it shows entries for both Playcorp servers:

playcorp1, Host(A), 192.168.10.8
playcorp2, Host(A), 192.168.10.11

Here is the IPCONFIG for Proxima:

C:\>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : PROXIMA
Primary Dns Suffix . . . . . . . : sundays.com.au
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : sundays.com.au
com.au

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
Physical Address. . . . . . . . . : 00-02-55-D6-C4-60
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.20.20
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.20.1
DNS Servers . . . . . . . . . . . : 192.168.20.20
193.1.1.101
Primary WINS Server . . . . . . . : 192.168.20.20
Secondary WINS Server . . . . . . : 193.1.1.101

C:\>

Note: 193.1.1.101 is a domain controller running DNS & WINS.

Can someone see what the issue is?

[m80arm]

The responce your getting back from playcorp2 is as if it were in the s.com.au domain when it should be in the p.com.au domain. Check your DNS server for s.com.au and see if you have a A host record for playcorp2.s.com.au

The responce your getting back from playcorp1 would be correct as, by default, your trying to ping <host>.s.com.au as this will be the DNS suffix for the domain. It can't find a host for playcorp1.s.com.au but since you use the FQDN it either uses recursion or you may have forwarders or stud zones to point you to a DNS server in the p.com.au

I understand this may sound a bit confusing but what are you trying to achieve? Do you want to be able to ping hosts in the p.com.au domain from s.com.au?

Michael

[JDMils]

I've checked the DNS server in s.com.au for an A record for the server Playcorp2 and there is none. So somehow the Proxima server, in the s.com.au domain (this is an internal AD domain, not on the internet) is finding it somwhere. Here's the NSLookup in the s.com.au domain:

C:\>nslookup
Default Server: proxima.s.com.au
Address: 192.168.20.20

> set type=ns
> proxima
Server: proxima.s.com.au
Address: 192.168.20.20

s.com.au
primary name server = proxima.s.com.au
responsible mail addr = hostmaster.s.com.au
serial = 183
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 900 (15 mins)
> playcorp2
Server: proxima.s.com.au
Address: 192.168.20.20

s.com.au
primary name server = proxima.s.com.au
responsible mail addr = hostmaster.s.com.au
serial = 183
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 900 (15 mins)
> playcorp1
Server: proxima.s.com.au
Address: 192.168.20.20

s.com.au
primary name server = proxima.s.com.au
responsible mail addr = hostmaster.s.com.au
serial = 183
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 900 (15 mins)
> ?

Here's some more infor which might help you to help me:

> set type=a
> playcorp2
Server: proxima.s.com.au
Address: 192.168.20.20

Name: playcorp2.s.com.au
Address: 192.168.10.11

> playcorp1
Server: proxima.s.com.au
Address: 192.168.20.20

*** proxima.s.com.au can't find playcorp1: Non-existent domain
> p.com.au
Server: proxima.s.com.au
Address: 192.168.20.20

Name: p.com.au
Addresses: 192.168.10.8, 192.168.10.11

> set debug
> playcorp1
Server: proxima.s.com.au
Address: 192.168.20.20

------------
Got answer:
HEADER:
opcode = QUERY, id = 14, rcode = NXDOMAIN
header flags: response, auth. answer, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 1, additional = 0

QUESTIONS:
playcorp1.s.com.au, type = ANY, class = IN
AUTHORITY RECORDS:
-> s.com.au
ttl = 3600 (1 hour)
primary name server = proxima.s.com.au
responsible mail addr = hostmaster.s.com.au
serial = 183
refresh = 900 (15 mins)
retry = 600 (10 mins)
expire = 86400 (1 day)
default TTL = 900 (15 mins)

------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 15, rcode = NXDOMAIN
header flags: response, auth. answer
questions = 1, answers = 0, authority records = 1, additional = 0

QUESTIONS:
playcorp1.com.au, type = ANY, class = IN
AUTHORITY RECORDS:
-> com.au
ttl = 86400 (1 day)
primary name server = ns1.ausregistry.net
responsible mail addr = dns.ausregistry.net.au
serial = 2010546066
refresh = 14400 (4 hours)
retry = 3600 (1 hour)
expire = 3600000 (41 days 16 hours)
default TTL = 86400 (1 day)

------------
*** proxima.s.com.au can't find playcorp1: Non-existent domain
>

I'm looking in Replmon on Proxima and it is replicating with Playcorp2 and not Playcorp1. What's going on?

[JDMils]

Here's something......

I added the p.com.au domain to TCP/IP\Advanced\DNS\Append these DNS suffixes (in order) to the Proxima server's Local Area Connection. Now, when I do an IPCONFIG, I get:

C:\>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : PROXIMA
Primary Dns Suffix . . . . . . . : s.com.au
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : s.com.au
v.com.au
p.com.au

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
Physical Address. . . . . . . . . : 00-02-55-D6-C4-60
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.20.20
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.20.1
DNS Servers . . . . . . . . . . . : 192.168.20.20
193.1.1.101
Primary WINS Server . . . . . . . : 192.168.20.20
Secondary WINS Server . . . . . . : 193.1.1.101

C:\>

Now when I ping the Playcorp1 & Playcorp2 servers from Proxima, I get:

C:\>ping playcorp1

Pinging playcorp1.p.com.au [192.168.10.8] with 32 bytes of data:

Reply from 192.168.10.8: bytes=32 time<1ms TTL=127
Reply from 192.168.10.8: bytes=32 time<1ms TTL=127
Reply from 192.168.10.8: bytes=32 time<1ms TTL=127
Reply from 192.168.10.8: bytes=32 time<1ms TTL=127

Ping statistics for 192.168.10.8:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>ping playcorp2

Pinging playcorp2.s.com.au [192.168.10.11] with 32 bytes of data:

Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time<1ms TTL=127
Reply from 192.168.10.11: bytes=32 time<1ms TTL=127

Ping statistics for 192.168.10.11:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>

So now I can ping Playcorp1 But I still don't understand why the different domain suffixes appear for two servers in the same domain, p.com.au?? They are ONLY listed in the p.com.au Forward Lookup Zones in DNS.