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[Brian]

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To summarize this long thread....

1) Ping ressolves all host names on internal lan to an external ip

2) The entire network locks up after an unspecified amount of time. If I use static IP and shut off DHCP this does not occur.

3) If I disconnect router from my cable modem pings resolve hostnames to correct lan ip's

[Brian]

BTW....All clients are using DHCP

[Brian]

I spent a couple hours lastnight on the phone with my ISP (roadrunner)  They feel that it is my router, not resolving host names and passing them to the DNS on the wan side.

I've changed from my ISP's DNS to OpenDNS and added my network name as an exception.

Based on this, it appears that when a request comes in to resolve a host name the router is pushing it out to the DNS server of the ISP and if it cannot resolve it, then the router resolves it.

Shouldn't the router try first and then pass it on to the DNS server on the wan side?

[Lycan]

the router has nothing to do with resolving host names. it doesn't have a DNS server in it. what you're having trouble with is NETBIOS.

Eddiez help me out here......

[EddieZ]

I'm here  (though shortly this Friday...hectic week)

Brian, for starters (1.) could you please include the IP ranges in the diagram, and report how the config is set on this page of the router configuration pages: Setup -> Network Settings.
Do you have any special adjustments made to your WHS? Just curious...

2. Please give the output that you get (" Ping ressolves all host names on internal lan to an external ip") on your screen

3. Concerning your other issues (2&3)Do you have multiple DHCP on your LAN/is the modem bridged?

Q:Do you have Ipv6 enabled on you machines? When I ping a hostname from my Vista client, by default (PING <hostname> I will get an IPv6 response. Only when I enter the PING -4 command (followed by the hostname) I will get an IPv4 respons. XP machines do not have IPv6 installed by default and Vista does. So does the ping issue also occur on Vista-2-Vista?

[Brian]

I'm here  (though shortly this Friday...hectic week)

Brian, for starters (1.) could you please include the IP ranges in the diagram, and report how the config is set on this page of the router configuration pages: Setup -> Network Settings.
Do you have any special adjustments made to your WHS? Just curious...

2. Please give the output that you get (" Ping ressolves all host names on internal lan to an external ip") on your screen

3. Concerning your other issues (2&3)Do you have multiple DHCP on your LAN/is the modem bridged?

Q:Do you have Ipv6 enabled on you machines? When I ping a hostname from my Vista client, by default (PING <hostname> I will get an IPv6 response. Only when I enter the PING -4 command (followed by the hostname) I will get an IPv4 respons. XP machines do not have IPv6 installed by default and Vista does. So does the ping issue also occur on Vista-2-Vista?

1) A new lan diagram with IP's can be found here: http://www.monkeysofdestruction.com/mod/tp-images/Image/Network3.png

1b) Click here for router config image: http://www.monkeysofdestruction.com/mod/tp-images/Image/routerconfig.png

1c) no adjustments to WHS

2) If I type: ping lisas

Code: [Select]

Pinging lisas.BATES [24.28.193.9] with 32 bytes of data:
3) Multiple DHCP?     Multiple clients.  The DIR-825 is the only server

3b) Modem bridged?  Not sure what that means.  Modem supplied by roadrunner

4) IPv6 is installed by default via Vista.  I've not altered their settings from default.

5) Yes, ping issues occurs on all machines.

[EddieZ]

Multiple DHCP: yes, an internet modem usually also has DHCP enabled. That would make two in the LAN: the modem and the DIR. And two fold DHCP on a LAN is a no-no, unless you have different subnets.

Anyway... Remove the local domain name 'Bates' (or does RR require you to have it?), disable DNS relay and manually set DNS server to the RR modem IP (networking setup screen), reboot modem and please check your PING again.

By the way, what's your RR modem IP?

[Brian]

1) Ok, using tracert the first hop is 10.49.0.1 so I assume that is my modem's IP address.

2) If I shut off DNS relay I can't get to anything on the net.  Regardless of what is in the DNS settings of the 825

3) If manually set the DNS to the modem's address (10.49.0.1) I can't browse the internet, but I can ping hostnames on the LAN.  This is true with DNS Relay on or off

4) Host name not required and removed.

[EddieZ]

So your problem seems to be with the connection between the modem and the router, probably the modem setting/config. It should be possible to internet with DNS relay off, inputting a DNS server manually. Since it doesn't they culprit is your modem (config). Can you change the modem setup or is it a static modem?

I'll get back to you asap, my ISp has decided to trash a Dslam or something so I'm now using my business GPRS connection (which is quite expensive  ).

[Brian]

Static modem.  No settings that I know of

[Brian]

Something that I never tried before was to shut off DNS relay and leave the DNS entries blank so that the ISP assigns them to the router.

If I do this and ping a LAN host name, I get this:

Code: [Select]

Pinging lisas.neo.rr.com [208.69.36.132] with 32 bytes of data:
Which, again is not on my LAN

BTW....with the settings like this, I CAN surf the web.

[EddieZ]

Does your WHS run a DNS server of some kind? Just got to ask, since there is something outside of your DIR655 causing this phenomenon. I guess it is your modem that does not seem to be able to be LAN aware (that's a DNS config issue).

Do you have Routing and Remote Services on the connected PC's?

This is not an uncommon thing to happen, you will find several references through google.
This is one response I like:

"Usual reason for this is the local dns server is not properly configured or the workstation dns entries point to the router/isp dns not the DC.
Proper config is for wksts being dhcp clients of the server. Dhcp is set to auto update dns. Dns has the isp's dns servers listed in the forwarders tab [not to be confused with the forward lookup zone]. Local name resolution is handled by the ms dns server. Internet name resolution goes to the ms dns server which then forwards the request to the isp's dns server for resolution."

I think there either is a DNS server active somewhere inside the LAN or the modem itself is not configured OK.

[Brian]

Well after DAYS of troubleshooting and with your help, this is what I've found.

I called my ISP about the problem, and although they wouldn't help because the router isn't theirs, they did reboot the router and do some unknown work to it.  Now the ping is working correctly.

Secondly, the network freezing appears to be because I had jumbo frame support enabled on my nic's.  After I disabled it I've had no more freezing problems.  Does the 825 not support jumbo frames?  I know the switch ( D-Link DGS-2208 ) does.

[EddieZ]

So my conclusion that the MODEM was causing it was the right one?

So your problem seems to be with the connection between the modem and the router, probably the modem setting/config. It should be possible to internet with DNS relay off, inputting a DNS server manually. Since it doesn't they culprit is your modem (config). Can you change the modem setup or is it a static modem?

I guess it is your modem that does not seem to be able to be LAN aware (that's a DNS config issue).

[Brian]

It appears that way.  Thanks for your help.