Re: network goes down everyday at same time
- From: jennyjen <jennyjen@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 10 Mar 2008 10:31:05 -0700
Thanks for the help so far everyone..below are the answers to your questions:
we have two firewalls (client side and server side)
client: Watchguard x700 ver 7.21.B1596
server: Watchguard x700 ver 7.21.B1596
and no we do not use any sort of proxy server. At every other point in the
day everything works fine. It just seems to go down for those few hours in
the afternoon with out fail.
Since the problem is occuring right now. I have tested by pinging
www.google.com, www.yahoo.com for you and i am able to get a reply. As for
DNS all outgoing requests we use our ISPs DNS and all incomming requests we
host our own DNS.
This problem hasnt always occured either. Just started to happen a few
months ago i believe.
Here is the ipconfig info from a client computer:
Windows IP Configuration
Host Name . . . . . . . . . . . . : computer017
Primary Dns Suffix . . . . . . . : domain.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : domain.local
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com 3C920 Integrated Fast
Ethernet
Controller (3C905C-TX Compatible)
Physical Address. . . . . . . . . : 00-06-5B-9E-C6-F3
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.188
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.2
DHCP Server . . . . . . . . . . . : 192.168.0.20
DNS Servers . . . . . . . . . . . : 192.168.0.20
192.168.50.22
Primary WINS Server . . . . . . . : 192.168.0.22
Secondary WINS Server . . . . . . : 192.168.0.20
Lease Obtained. . . . . . . . . . : Monday, March 10, 2008 12:53:12 PM
Lease Expires . . . . . . . . . . : Monday, March 10, 2008 4:53:12 PM
Ipconfig /all from my domain controller:
Windows IP Configuration
Host Name . . . . . . . . . . . . : domain controller
Primary Dns Suffix . . . . . . . : domain.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : domain.local
Ethernet adapter Local Area Connection 2:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100 Network Connection
Physical Address. . . . . . . . . : 00-06-5B-3D-7C-C0
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.21
Subnet Mask . . . . . . . . . . . : 255.255.255.0
IP Address. . . . . . . . . . . . : 192.168.0.22
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.20
192.168.0.22
Primary WINS Server . . . . . . . : 192.168.0.20
let me know what you come up with..
Thanks so much
"Ace Fekay [MVP]" wrote:
In news:%23hKSamLgIHA.4164@xxxxxxxxxxxxxxxxxxxx,.
Lanwench [MVP - Exchange]
<lanwench@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> typed:
You've already started with the most important bit of isolation
testing by checking to see what happens when you go outside your
firewall. :-)
So, next, I'd be looking at your firewall - logs, etc. It might help
if you mentioned the brand/model & firmware you're using. And I
presume you're not using ISA or any other kind of proxy server - if
you are, that's important to mention.
When the problem occurs, you should also do testing inside the LAN -
see if you can ping anything by IP address through the firewall (your
ISP's DNS server) and also by name (e.g., www.google.com). This will
let you know if it's a name resolution issue or not.
In addition to your suggestions and questions, is JennyJen only using the
internal DNS or do your machines have a mix of internal DNS and ISP's DNS?
Does it have forwarding configured?
JennyJen, please post an ipconfig /all of your domain controller and one of
a sample workstation. The config info will help us take a look at your
configuration.
--
Regards,
Ace
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT,
MVP Microsoft MVP - Directory Services
Microsoft Certified Trainer
For urgent issues, you may want to contact Microsoft PSS directly. Please
check http://support.microsoft.com for regional support phone numbers.
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- From: Lanwench [MVP - Exchange]
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