dhcp or dns problem

[fule12]

Hi all,
I have nt 4.0 server like domain and dhcp runing on domain server, dns is runing on win2000 server what i use like file server and local mdeamon server.
Problem is :
if i enter in ie http:\\192.168.0.xxx ort number(80 or 3000 is take n time of minutes to open or just page error message:

Connection Failed
The system returned:
(145) Connection timed outThe remote host or network may be down. Please try the request again. ,
but if i enter
http:\\name of pcort number is take some time but will open my web page or Mdeamon login page.

So what can be wrong ???

Thanks

Fule

 

[Parcival21]

Well in my opinion its definitely not a dns problem because as you can see dns seems to work. You could try to look if this is a dhcp problem by controlling the ip settings of your clients. (ipconfig etc...)
In my opinion this might be a routing problem but my knowledge is not that good.
you might post a little info about your network topology.

bye,
busche

 

[fule12]

Thanks Busche for your reply,
Ok I have NT server what is domain.
On Pc where I runing Winroute pro 4.2.5 (ip 192.168.0.4)
One PC (win2000 server) where runing dns(ip 192.168.0.9)
Wins is runing on Nt server (ip 192.168.0.10)

So on NT when i go to HCP Manager list look like this

003 Router --192.168.0.4
006 DNS Servers -- 192.168.0.9
015 Domain Name -- mydomain
044 Wins/NBNS Servers -- 192.168.0.10
046 Wins/NBT Node Type -- 0x8


C:\>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : hp2
Primary Dns Suffix . . . . . . . : mydomain.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : mydomain.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
for hp
Physical Address. . . . . . . . . : 00-0B-CD-B6-07-7A
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.200
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.4
DNS Servers . . . . . . . . . . . : 192.168.0.9


==========================================================
ok maybe is problem from ipconfig : dhcp enabled .... : No ?


Thanks


Fule

 

[chieftan999]

Have you used ping and tracert to figure out the issue with IP addressing?

 

[fule12]

yes and is no problem :

C:\>ping

http://www.yahoo.com

Pinging

http://www.yahoo.akadns.net

[216.109.118.76] with 32 bytes of data:

Reply from 216.109.118.76: bytes=32 time=253ms TTL=49
Reply from 216.109.118.76: bytes=32 time=248ms TTL=49
Request timed out.
Reply from 216.109.118.76: bytes=32 time=244ms TTL=49

Ping statistics for 216.109.118.76:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 244ms, Maximum = 253ms, Average = 248ms

C:\>tracert

http://www.yahoo.com

Tracing route to

http://www.yahoo.akadns.net

[216.109.118.76]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms dfm-firewall.dobsonshipman.com [192.168.0.4]
2 5 ms 1 ms 1 ms router-Dobson.spidernet.net [217.16.224.193]
3 50 ms 49 ms 49 ms ptp-NOC-Dobson.spidernet.net [217.16.224.125]
4 55 ms 55 ms 53 ms ptp-NOC-adslbi.spidernet.net [194.154.159.157]
5 53 ms 55 ms 52 ms jack-e2.spidernet.net [194.154.154.186]
6 63 ms 52 ms 74 ms nicosia8f110.spidernet.net [194.154.154.242]
7 172 ms 165 ms 163 ms 195.10.63.17
8 173 ms 195 ms 195 ms bcr1.tsd.cw.net [166.63.210.61]
9 239 ms 265 ms 307 ms so-1-3-0-dcr1.tsd.cw.net [195.2.10.58]
10 349 ms 412 ms 363 ms so-5-0-0-dcr1.nyk.cw.net [195.2.10.113]
11 380 ms 440 ms 395 ms so-0-0-0-ecr1.nyk.cw.net [195.2.3.14]
12 506 ms 473 ms 468 ms bas1-m.nyc.yahoo.com [198.32.118.24]
13 413 ms 253 ms 247 ms vl812.bas1-m.dce.yahoo.com [216.115.98.105]
14 254 ms 241 ms 245 ms vlan220-msr2.dcn.yahoo.com [216.115.96.165]
15 240 ms 251 ms * vl30.bas1-m.dcn.yahoo.com [216.109.120.142]
16 259 ms 242 ms 244 ms p13.

http://www.dcn.yahoo.com

[216.109.118.76]

Trace complete.

Fule

 

[Parcival21]

Well you do not seem to have any problems if you enter an dns name anywhere(browser, ping, tracert). Might be interesting if the outcome of a tracert of a IP that you cannot reach via your browser is different from the tracert of the dns name with whom you can reach teh address via your browser...
I don't know how DNS exactly works but it might be that you can reach your DNS server, your DNS server is able to reach your aim and establishes the connection for you, while your client is not able to direktly connect to a destination.
Another question, do you have a Proxy Server running. Might be another place to look at...

 

[fule12]

I'm usng proxy provided by local ISP, and problem is only with pages in intranet not with one on internet.I was create some web page for testing and if i enter in IE browser

http://192.168.0.9:3000

afer 10-15 min i get error from abave : (142) Timeout ect.... , but if i enter pc machine name .

http://hp2:3000

, than in 2-3 sec. will open page ?!???

Thanks

Fule

 

[ajrox]

sounds like a reverse look up problem.
forward lookup= host to IP / uses the computer name to match to an IP address.
reverse lookup= IP to host / uses the IP address to match to a computer name.
in the DNS console, create a reverse look up zone.
good luck
AJ

 

[fule12]

I have reverse lookup and forward lookup zone.


Fule

 

[Parcival21]

just an idea,
you probably direct all your http requests to your proxy server?
it seems as if you reach the proxy server..
Have you excluded some addresses from going through the proxy server(for example 192.168.0.*)?
IF you've done so the proxy seems to know your internal web page because the name is probably not changed into an ip address before reaching the proxy. Still makes no sense for me why you can't reach your web server but this would verify that both use different ways to reach their aim...

busche

 

[fule12]

Thanks Busche , but on IE setting for LAN on each pc I mark box Bypass proxy server for local addresses and Exceptions are empty.

Fule

 

[fule12]

Thanks all of you I just change settings under IE on Lan , in Exception part I enter 127.0.0.1;192.168.0.* and now i can open web page from local addresses.
Just one question is some another way or i need to go from pc to pc end add this settings manualy ?

Thanks

Fule

 

[I21st]

In Windows you can use the wpad.dat file to create customization within your proxy solution. By default, all IE browsers will run autodiscovery when they launch. You can create a DNS A record for a host to resolve to wpad.yourdomainnamehere.com for example and place your custom exceptions within a wpad.dat file on that host. I'm sure you can also create a proxy chain to link to your ISP's proxy for Internet traffic. Lookup wpad.dat on MS's website and you should find a document or two to help you. Also, I believe there's a way to do it in DHCP scope options as well. Good luck.