Can't access Dell website

[Valerie]

replies in blue, pings below

Originally Posted by markknell

Try:
http://143.166.224.202/uk No joy with this

Are you connected to a router or straight to a cable modem?

At the command prompt, if you type ipconfig /all what DNS servers does it return / display? 194.168.4.100, 194.168.8.100

Is your network card set for DHCP ? how do I check this

Can you ping 194.168.4.100 or 194.168.8.100 ??

Can you ping 143.166.224.202 ?

C:\Documents and Settings\Challis>ping 194.168.4.100
Pinging 194.168.4.100 with 32 bytes of data:
Request timed out.
Reply from 194.168.4.100: bytes=32 time=15ms TTL=117
Reply from 194.168.4.100: bytes=32 time=14ms TTL=117
Reply from 194.168.4.100: bytes=32 time=16ms TTL=117
Ping statistics for 194.168.4.100:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 14ms, Maximum = 16ms, Average = 15ms
C:\Documents and Settings\Challis> ping 194.168.8.100
Pinging 194.168.8.100 with 32 bytes of data:
Request timed out.
Reply from 194.168.8.100: bytes=32 time=12ms TTL=119
Reply from 194.168.8.100: bytes=32 time=14ms TTL=119
Reply from 194.168.8.100: bytes=32 time=13ms TTL=119
Ping statistics for 194.168.8.100:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 12ms, Maximum = 14ms, Average = 13ms
C:\Documents and Settings\Challis>ping 143.166.224.202
Pinging 143.166.224.202 with 32 bytes of data:
Reply from 143.166.224.202: bytes=32 time=127ms TTL=235
Reply from 143.166.224.202: bytes=32 time=146ms TTL=235
Reply from 143.166.224.202: bytes=32 time=137ms TTL=235
Reply from 143.166.224.202: bytes=32 time=131ms TTL=235
Ping statistics for 143.166.224.202:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 127ms, Maximum = 146ms, Average = 135ms
C:\Documents and Settings\Challis>

---------- Post added at 17:04 ---------- Previous post was at 17:02 ----------

no joy in safe mode either

[markknell]

If you can ping the ip address of the dell website but you can't access it via your browser means there must be something else wrong with your setup other than DNS. If you have Real Player installed try typing the website in there and see if it displays it.

The fact you are loosing the first ping request to each DNS server seems a little odd. Are connected to your router via wireless ?

You can find out if you're using DHCP at the commmand prompt with ipconfig /all - Somewhere on the list of information you should see DHCP Enabled Yes or No

At the command prompt try tracert 194.168.4.100 and copy back the result here.

Also I find deleting your internet cache and cookies helps with a lot of problems with websites but that doesn't explain the DNS issues.

Which router make and model are you using ?

Also it may help if you post back the results of ipconfig /all

Nothing is in a particular order, I'm just thinking out loud.

[Valerie]

No losses this am on pinging anywhere. I've put 143.166.224.202 and dell.co.uk in my hosts file and can now ping and tracert (see below) but still cannot open webpage.

Router (ethernet wired) Netgear RP614

thanks for help - this makes no sense to me!

C:\Documents and Settings\Challis>ping dell.co.uk
Pinging dell.co.uk [143.166.224.202] with 32 bytes of data:
Reply from 143.166.224.202: bytes=32 time=147ms TTL=235
Reply from 143.166.224.202: bytes=32 time=126ms TTL=235
Reply from 143.166.224.202: bytes=32 time=126ms TTL=235
Reply from 143.166.224.202: bytes=32 time=127ms TTL=235
Ping statistics for 143.166.224.202:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 126ms, Maximum = 147ms, Average = 131ms
C:\Documents and Settings\Challis>tracert dell.co.uk
Tracing route to dell.co.uk [143.166.224.202]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.2.1
2 10 ms 6 ms 7 ms 10.252.172.1
3 9 ms 8 ms 7 ms oxfd-t2cam1-b-ge95.inet.ntl.com [213.106.246.141
]
4 8 ms 7 ms 8 ms oxfd-t2core-b-ge-wan61.inet.ntl.com [195.182.174
.5]
5 11 ms 11 ms 11 ms bre-bb-b-so-033-0.inet.ntl.com [62.253.187.13]
6 13 ms 12 ms 11 ms 195.50.91.129
7 20 ms 16 ms 17 ms ae-31-51.ebr1.london2.level3.net [4.68.117.30]
8 17 ms 16 ms 17 ms ae-1-100.ebr2.london2.level3.net [4.69.132.122]
9 16 ms 12 ms 17 ms ae-2.ebr1.london1.level3.net [4.69.132.146]
10 20 ms 17 ms 14 ms ae-1-100.ebr2.london1.level3.net [4.69.132.118]
11 * 86 ms * ae-4.ebr1.newyork1.level3.net [4.69.132.109]
12 84 ms 83 ms 98 ms ae-12-55.car2.newyork1.level3.net [4.68.97.149]
13 85 ms 82 ms 83 ms te-7-4.wch010.nycmny2.level3.net [4.68.110.22]
14 83 ms 84 ms 83 ms 64.200.249.149
15 87 ms 89 ms 88 ms hrndva1wcx2-pos1-0-oc192.wcg.net [64.200.210.178
]
16 87 ms 87 ms 87 ms hrndva1wcx3-pos4-0-oc192.wcg.net [64.200.89.122]
17 120 ms 120 ms 120 ms drvlga1wcx2-pos2-0-oc192.wcg.net [64.200.210.237
]
18 120 ms * 119 ms hstntx1wcx2-pos11-0.wcg.net [64.200.240.77]
19 122 ms 117 ms 119 ms hstntx1wcx3-pos11-0.wcg.net [64.200.186.78]
20 122 ms 124 ms 122 ms austtx1wce010-pos3-0.wcg.net [64.200.184.22]
21 142 ms 153 ms 135 ms 64.200.185.2
22 * * * Request timed out.
23 * 208 ms * 10.180.82.89
24 130 ms 130 ms 129 ms 143.166.72.147
25 126 ms 126 ms 126 ms dell.co.uk [143.166.224.202]
Trace complete.

Windows IP Configuration
Host Name . . . . . . . . . . . . : *******
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter LAN to router:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NETGEAR FA311 Fast Ethernet Adapter
Physical Address. . . . . . . . . : **-**-**-**-**-**
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.3
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 194.168.8.100
194.168.4.100
Lease Obtained. . . . . . . . . . : 29 September 2006 07:49:39
Lease Expires . . . . . . . . . . : 19 January 2038 04:14:07

[markknell]

Ok this maybe a long shot but can you swap your DNS server order. At the moment it seems you are going to 194.168.8.100 first. Can you make sure that 194.168.4.100 is the primary DNS server.

When I perform an nslookup against each server for dell.co.uk they provide the same results but list the IP addresses in different orders.

I'm sure we can resolve this

Do you have any Static Content Filtering configured on your router. Also with your router you don't need any software firewall installed on the PC unless you are crazy paranoid, uninstall it for the purpose of testing :-)

[Valerie]

Have found I can access website if I don't use router, so that's the problem, but what's the cure?

No static content filtering on router.

[Cobbydaler]

What's the MTU set at in the router?

[Valerie]

how do I find the current MTU? I've downloaded DR tcp which will help change it, but don't know where I'm starting from.

[Cobbydaler]

I'm thinking that some routers have a facility for setting the MTU internally, independent from your PC. That might be why things are OK when you don't go through the router..

What router do you have?

[markknell]

That will only set the MTU on the PC which should be 1500. Your routers default MTU is 1500 too.

Did the problem start when you started using the router or has this just come up?

Do we still need to use mac cloning, anyone ? Could this be the cause?

If it were me I would reset the router to defaults and start again

[Cobbydaler]

See here...

[markknell]

An interesting article....

I have my MTU set to 1500 and I can access the site with no problems. I would hope that dell would account for a common MTU size but you never know.

[Valerie]

cobbydaler: router in Netgear RP614

markknell: think it's a recent problem but can't be 100% certain

[markknell]

Did you uninstall the firewall on your PC? If not then try that. If that doesn't work then try resetting the router to defaults before you go too deep with this.

[Valerie]

Have restored factory settings on router. Have changed MTU on router to 1400 via router webpage. No Joy.
Didn't uninstall firewall but did try accessing webpage in safemode where firewall not loaded.

[Cobbydaler]

1400 is too low I think, try 1492..