Date: Sat, 24 Apr 1999 11:21:13 +0200 From: Gary Jennejohn <garyj@peedub.muc.de> To: tobi@bland.fido.de (Tobias Ernst) Cc: freebsd-isdn@freebsd.org Subject: Re: instabilities Message-ID: <199904240921.LAA05482@peedub.muc.de> In-Reply-To: Your message of "Sat, 24 Apr 1999 09:02:10 %2B0200." <MSGID_242=3A7600=2F1_37218b98@Fido.DE>
next in thread | previous in thread | raw e-mail | index | archive | help
Tobias Ernst writes: [snip] >Now my question is on what tools I could use to find out what actually is goin >g >wrong the next time a problem of this sort pops up. In the first case, I >suspect that the problem must have been somewhere in the ISDN layer, so I thin >k >I have not much chance of finding out unless I want to invoke a debugger. But >in the second case it must have been a problem in the IP layer, and so there >should be ways to diagnose it. spppcontrol perhaps? > >My system is FreeBSD 2.2.8 with i4b 0.70.00 and Gary's patches for the PCC-16 >applied. > well, if you suspect the isdn layers then you should turn on debugging bits using isdndebug. When I want to debug isdn itself I turn on ALL the bits in ALL the layers. This produces lots of output, but I usually find that the clue to the cause is buried somewhere in there. However, you must be prepared to learn a lot about isdn4bsd in the process ;) It can also be useful to turn on more debugging bits in isdnd with the -d option. secondly, try running tcpdump (you need BPF in the kernel) on the interface. The -vv option is good here. thirdly, Helle is on the verge of releasing a new version with lots of bug fixes, so you might want to wait until it comes out and then upgrade. fourthly, are you REALLY sure that you changed nothing ? I was fighting with sPPP for a while and was convinced that I hadn't changed anything. Turned out that I'd enabled TCP extensions at some time, and that was causing my problems. and last but not least, has the other end changed something in their configuration ? --- Gary Jennejohn Home - garyj@muc.de Work - garyj@fkr.dec.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199904240921.LAA05482>