Re: IE & Router problem

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On Wed, 27 Jun 2007 13:14:03 -0700, Paul W wrote:

The only other thing that I can think of is that your ISP is using some kind
of transparent, caching proxy which is inducing delay in DNS response; a
delay which isn't breaking things when connected directly to the modem, but
breaking things when the router is added.

Trying the FQDN in your ping test with Sam Spade WinTool:

| 06/27/07 16:14:06 ping tiscali.co.uk
| Ping tiscali.co.uk (212.74.99.30) ...
| 1 failed
| 2 failed
| 3 failed
| 4 failed
| 5 failed
| 6 failed
| 7 failed
| 8 failed
| 9 failed
| 10 failed

And also:

| 06/27/07 16:15:01 Slow traceroute tiscali.co.uk
| Trace tiscali.co.uk (212.74.99.30) ...
| 192.168.102.1 RTT: 1ms TTL:170 (chihiro.aosake.net ok)
| 192.168.0.1 RTT: 2ms TTL:170 (suzuka.aosake.net ok)
| 69.105.177.254 RTT: 350ms TTL:170 (adsl-69-105-177-254.dsl.pltn13.pacbell.net ok)
| 64.164.97.130 RTT: 371ms TTL:170 (dist1-vlan60.pltn13.pbi.net probable bogus rDNS: No DNS)
| 151.164.93.231 RTT: 355ms TTL:170 (bb1-g15-0.pltnca.sbcglobal.net ok)
| 151.164.242.230 RTT: 284ms TTL:170 (ex2-p14-0.eqsjca.sbcglobal.net ok)
| 213.200.66.245 RTT: 273ms TTL:170 (so-0-1-2.sjc11.ip.tiscali.net probable bogus rDNS: No DNS)
| 213.200.81.254 RTT: 443ms TTL:170 (so-0-0-0.lon22.ip.tiscali.net probable bogus rDNS: No DNS)
| 213.200.78.234 RTT: 317ms TTL:170 (tiscali-uk-tch2.ip.tiscali.net probable bogus rDNS: No DNS)
| 212.74.106.210 RTT: 254ms TTL:170 (ge3-2.switch0-mk.as9105.net probable bogus rDNS: No DNS)
| * * * failed
| * * * failed
| * * * failed
| * * * failed

That is an odd result (latency is higher than expected due to a concurrent
BitTorrent download).

Probably not responding to ICMP.

Thanks for the input. I went throught the process steps you suggested and
got the same results as per your note for nslookup and ipconfig commands. I
tried setting router up with manaual DNS entries, but made no difference to
the original problem. (I used ipconfig to verify DNS addresses had changed).

So looks like another blank.

I tried to follow the thread of the discussions between yourself and Robert.
The ping command gave me the following. It translates to an ip address, but
then cannot find the host. Odd?:

"C:\Documents and Settings\Paul>ping tiscali.co.uk -n 1
Pinging tiscali.co.uk [212.74.99.30] with 32 bytes of data:
Request timed out.
Ping statistics for 212.74.99.30:
Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),
C:\Documents and Settings\Paul>"

"NormanM" wrote:

On Mon, 25 Jun 2007 14:27:17 -0700, Paul W wrote:

The D-link router is an integral router and DSL modem. ISP requires PPPOA
which is what i have the router configured to.

Thanks for your thoughts on the topic. I will keep digging; there must be a
logical solution somewhere.

Robert Aldwinckle has taken me to task for overlooking something. The
possibility that your system is seeing your DNS servers as local. You can
see this by using the 'nslookup' command in a command window. For Windows XP
type 'cmd' in the Run box. Windows 98 and Windows Me have a shortcut in the
Start menus.

I get the following result:

| C:\Documents and Settings\Norman>nslookup www.yahoo.com
| DNS request timed out.
| timeout was 2 seconds.
| *** Can't find server name for address 192.168.0.1: Timed out
| *** Default servers are not available
| Server: UnKnown
| Address: 192.168.0.1
|
| Non-authoritative answer:
| Name: www.yahoo-ht3.akadns.net
| Address: 209.131.36.158
| Aliases: www.yahoo.com

There is a perceptible delay between pressing the 'Enter' key and seeing a
result. What is happening is that my DNS request is passed through my
Netgear router to my DSL modem. When I run 'ipconfig -all' at the command
prompt, I get the following:

| C:\Documents and Settings\Norman>ipconfig -all
|
| Windows IP Configuration
|
| Host Name . . . . . . . . . . . . : KOZUE
| Primary Dns Suffix . . . . . . . :
| Node Type . . . . . . . . . . . . : Hybrid
| IP Routing Enabled. . . . . . . . : No
| WINS Proxy Enabled. . . . . . . . : No
| DNS Suffix Search List. . . . . . : aosake.net
|
| Ethernet adapter Local Area Connection:
|
| Connection-specific DNS Suffix . : aosake.net
| Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection
| Physical Address. . . . . . . . . : 00-17-31-C6-CC-63
| Dhcp Enabled. . . . . . . . . . . : Yes
| Autoconfiguration Enabled . . . . : Yes
| IP Address. . . . . . . . . . . . : 192.168.102.34
| Subnet Mask . . . . . . . . . . . : 255.255.255.0
| Default Gateway . . . . . . . . . : 192.168.102.1
| DHCP Server . . . . . . . . . . . : 192.168.102.1
| >>>> DNS Servers . . . . . . . . . . . : 192.168.0.1 <<<<|
| Lease Obtained. . . . . . . . . . : Tuesday, June 26, 2007 09:08:52
| Lease Expires . . . . . . . . . . : Friday, June 29, 2007 09:08:52

As you can see, Windows thinks that there is a DNS server at 192.168.0.1,
which is the IP address of my DSL modem. I can override the DNS server
setting in the router by manually adding the DNS servers listed in the
modem. When I do, 'ipconfig -all' gives me this result:

| C:\Documents and Settings\Norman>ipconfig -all
|
| Windows IP Configuration
|
| Host Name . . . . . . . . . . . . : KOZUE
| Primary Dns Suffix . . . . . . . :
| Node Type . . . . . . . . . . . . : Hybrid
| IP Routing Enabled. . . . . . . . : No
| WINS Proxy Enabled. . . . . . . . : No
| DNS Suffix Search List. . . . . . : aosake.net
|
| Ethernet adapter Local Area Connection:
|
| Connection-specific DNS Suffix . : aosake.net
| Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection
| Physical Address. . . . . . . . . : 00-17-31-C6-CC-63
| Dhcp Enabled. . . . . . . . . . . : Yes
| Autoconfiguration Enabled . . . . : Yes
| IP Address. . . . . . . . . . . . : 192.168.102.34
| Subnet Mask . . . . . . . . . . . : 255.255.255.0
| Default Gateway . . . . . . . . . : 192.168.102.1
| DHCP Server . . . . . . . . . . . : 192.168.102.1
| >>>> DNS Servers . . . . . . . . . . . : 68.94.156.1 <<<<|
| >>>> 68.94.157.1 <<<<|
| Lease Obtained. . . . . . . . . . : Tuesday, June 26, 2007 10:58:06
| Lease Expires . . . . . . . . . . : Friday, June 29, 2007 10:58:06

The DNS servers are now the ones listed in the modem Connection Information
page at http://192.168.0.1. Now 'nslookup' is a bit faster, almost
instantaneous:

| C:\Documents and Settings\Norman>nslookup www.yahoo.com
| Server: dnsr1.sbcglobal.net
| Address: 68.94.156.1
|
| Non-authoritative answer:
| Name: www.yahoo-ht3.akadns.net
| Address: 209.131.36.158
| Aliases: www.yahoo.com

Since this all works for me, anyway, I never give it much thought. Although
I don't know how a combination unit handles the matter. Maybe I do; the
relevant result from a computer which I know for certain to be connecting
through a combination DSL modem/router:

| Ethernet adapter Local Area Connection:
|
| Connection-specific DNS Suffix . :
| Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast Ethernet NIC
| Physical Address. . . . . . . . . : 00-40-2B-62-51-E9
| Dhcp Enabled. . . . . . . . . . . : No
| IP Address. . . . . . . . . . . . : 192.168.1.254
| Subnet Mask . . . . . . . . . . . : 255.255.254.0
| Default Gateway . . . . . . . . . : 192.168.0.1
|>>>> DNS Servers . . . . . . . . . . . : 192.168.0.1 <<<<|
| 206.13.28.12

So, if your 'ipconfig -all' result shows a local IP address
(192.168.xxx.xxx) for your DNS server, you might try to identify your DNS
server IP addresses (should be available through the router status pages),
and adding them manually to your Ethernet adapter through Network
Properties.

--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
.

Relevant Pages

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