Date: Mon, 06 Dec 1999 10:25:51 -0800 From: "Ronald F. Guilmette" <rfg@monkeys.com> To: freebsd-hackers@FreeBSD.ORG Subject: Re: natd is jumpy Message-ID: <2742.944504751@monkeys.com> In-Reply-To: Your message of Mon, 06 Dec 1999 02:38:57 -0700. <Pine.BSF.4.05.9912060227040.58893-100000@rapidnet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <Pine.BSF.4.05.9912060227040.58893-100000@rapidnet.com>, Nick Rogness <nick@rapidnet.com> wrote: >On Sun, 5 Dec 1999, Archie Cobbs wrote: > >> Brian Dean writes: >> > No dropped packets, but definitely some occasional long delays before >> > I get the echo. However, I must concede, based on other respondants, >> > that something else must be going on and I cannot necessarily >> > attribute this to divert/firewall/natd. > > > I forgot to mention, are you connecting at V.90 speeds? If so > renegotiations/retrains will take place and you will see a speed > jump or hesitation. Disable this in the modem. There are > specific S registers to do this... Ummm yea! That comment reminds me about all of the V.90 modem woes I was experiencing awhile back. I had an older Zoom 56k modem that seemed to work just fine with my _old_ ISP. Then I changed ISPs, and I started to see frequent problems. Some- times the modem would just seem to take a little nap for about 30 seconds or so. (Perhaps it was doing that retraining/renegotiation thing. I'm not sure.) But other times, I would just abruptly lose carrier for no apparent reason. (This was an external modem, so I could watch the various LEDs.) Of course, at first I blamed my new ISP. I figured that _they_ were doing something wrong because the modem had woked just fine with my prior ISP. So I called them up and started giving their tech support folks a hard time... in a friendly way of course. :-) The only idea/theory/suggestion that they came up with was that I must have a modem with Rockwell 56K chipset in it, and they said that they had had a number of problems with people using Rockwell-based modems because (they alleged) the Rockwell chipset was less than perfect, and because it didn't play well with the Lucent-chipset-based stuff that they had in their Portmasters. OK, so I run down to the local computer store and I'm looking for a _new_ V.90 modem with a *Lucent* chipset. The only one they had was a newer version of the same bloody Zoom modem I already have. Now I already don't like Zoom, because their tech support sucks, but I buy one of these new Zoom modems with the Lucent chipset anyway. Result: I have _never_ had a single problem since. The only problem I have now is finding the time to list the old (Rockwell- based) modem on eBay. :-) P.S. Please DO NOT flame me for any of the above. I most definitely DO NOT own stock in either Lucent or Rockwell, and I would be the first one to admit that I have absolutely NO IDEA for sure what exactly was causing my earlier problems with the Rockwell-based Zoom modem. For all I know, it was working fine and I just had it configured wrong. I'm just telling the story, as it happened. P.P.S. More info: Model # of old modem: Zoom 2849 Model # of new modem: Zoom 2949L To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2742.944504751>