Date: Thu, 27 Feb 97 01:35:20 +0100 From: Ben Stuyts <benst@terminus.stuyts.nl> To: freebsd-questions@freebsd.org Subject: uucp errors after upgrading ZyXEL modem to ISDN Message-ID: <199702270036.BAA00279@terminus.stuyts.nl>
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Second try, apologies if you've seen this twice. Dear net, I have upgraded my ZyXEL Elite modem to ISDN. Since then I am having intermittent problems with uucp sessions: sometimes packets arrive with bad checksums or out of order. Sometimes whole sessions go without any problem. I only see this problem with high-speed ISDN connections. There are no problems with V34 (max 28.8k) connections. It looks like a handshake problem, but it isn't. I have checked both the lights on the front panel of the modem, and with an rs232 tester. RTS goes off and on. The modem is configured for rts/cts handshaking. I am using the i protocol with default 1024/16 windows. There are no sio overflow errors in the console. I am running freebsd 2.2 gamma up to ctm 148. The machine has a Pentium 166 on a Gigabyte 586DX motherboard, and I am using the built-in serial ports. (cuaa0 in this case.) I have set up /etc/rc.serial to init port 0 as a modem port. Port speed is set to 115200. The ZyXEL's firmware is v2.04. My ISP is using an Ascend router. When I try to ftp or zmodem a large file, using ppp over this same modem, and to the same provider, I get no errors. (At least, the transfer rate is what it should be, and netstat -i shows no errors.) Some of the things I tried: - Disabled the on-board serial ports and used an ISA card with two 16c550's on it. - Played with the window settings of the i-protocol. - Played with /etc/rc.serial - Upgraded the modem's firmware to 2.05. - Upgraded /usr/src/ to ctm 187. All to no avail... Any ideas? Thanks, Ben
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