OK. My evidence for 'loses sync': the lights labeled DSL and ATM on the modem go out. Flash for a while, then come back on.
I can access any IP or URL that exists within the internal network. IE; a web server exists on host WWW (192.168.1.128) and I can access it via http://www or http://192.168.1.128 However, I cannot access http://www.google.com or others. If the modem is 'synced up', attempting to access an external page may start to load, but the lights again go out on the modem and the page is not displayed. DSL is PPPoE. I don't think I can be too much more specific on the DNS setup except standard DNSCache setup on the Bering box (ie; as suggested when setting up PPPoE). The Win2K machine is set as DNS server but to forward unresolved requests to the Bering box. The Bering box therefore, I believe, will be supplied DNS info from the ISP (Sympatico, by the way). Does this clarify? Ray Olszewski <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent by: cc: [EMAIL PROTECTED] Subject: Re: [leaf-user] DSL troubleshooting..... ceforge.net 11/25/2003 10:31 At 07:41 AM 11/25/2003 -0500, John Mullan wrote: >Can anyone give me hints about what to look for? > >My DSL modem (apparently) loses sync when I try to access an external web >site. After it syncs back up, and I try again, I lose sync again. Ping >works the same way except if I try to ping an IP rather than URL. Can you describe in a bit more detail what actual symptoms lie behind "(apparently) loses sync" and "it syncs back up"? Are you actually seeing the DSL modem's sync light (or whatever it is called on your device) go off, then back on? And, just to be sure, the problem is associated with *any* attempt at off-LAN DNS resolution (not just port-80 URLs), right? George's response is correct as far as it goes -- problems with a DSL modem's connectivity to your ISP are OSI layer-2, or possibly layer-1, problems, and (putting aside the possibility of some bizarre interaction deliberately introduced by your ISP, mentioned only because I don't put *anything* beyond sufficiently stupid ISPs) layer-3 (IP) and layer-4 (TCP, UDP) activities should not affect layer 2 (or 1). If your evidence for loss of sync is more indirect than what I write above, please provide additional details on the symptoms and on how you have DNS set up. If it is not more indirect, follow George's advice in the first instance. (Except focus on port 53, not port 80, if the problem occurs with pings by FQN as well as URLs). You might still want to tell us the rest of the details of your DNS setup and what sort of DSL service you have (that is, how you get your IP address ... it is PPPoE, for example). I can (just barely) imagine that your ISP is doing something silly to discourage its captives (pardon me, its "customers") from bypassing its DNS forwarders. >Now this would seem to me to be a DNS problem. But can this be with my >internal DNS or ISP's DNS ??? Could it be either? > >HISTORY: This is my home/personal network. I have Bering/Shorewall and it >has been working up until yesterday. I have not made any changes in the >last couple of days. I have a Win2K server (192.168.1.128) inside and it >is the primary DNS of the internal network. Bering box (192.168.1.254) is >secondary DNS (DNSCache). IE; Win2K will forward unresolved addresses to >it (obvious!?!). > >Ideas please...... ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ ------------------------------------------------------------------------ leaf-user mailing list: [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html KNOW YOUR LIMIT, PLAY WITHIN IT! ONTARIO PROBLEM GAMBLING HELPLINE 1 888 230-3505 DÉPASSER SES LIMITES, CE N'EST PLUS DU JEU. LA LIGNE ONTARIENNE D'AIDE SUR LE JEU PROBLÉMATIQUE 1 888 230-3505 ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ ------------------------------------------------------------------------ leaf-user mailing list: [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
