key@utkux1.utk.edu (10/27/89)
Has anyone successfully used the slipware available from neat.ai.toronto.edu to communicate between SparcStation 1's? I'm running SunOS 4.0.3c (they changed the kernel for the Sparc) and two Telebit T2500's at 19200. I had SLIP working between a sun 3/60 and a sun 3/260 running 4.0.3 and the same modems with just a minor routing bug in the tip-with-slip program. With the sparc's, I get zs0 ring buffer overflows causing loss of characters including frame characters, which tended to get SLIP pretty confused. I'm pretty sure the buffer overflow a flow control problem (but the folk I've talked to about SLIP all stressed turning off flow control - I presume for data transparency). I've heard that the zs controller is not really meant for high data speed and has difficulty with input > 4800 baud. Was my success in using SLIP with the zs ports on the Sun-3's dumb luck and folks are using the ALM's, etc for their SLIP work? Has anyone played with the RTS/CTS flow control? I didn't have any luck getting that to work, but didn't have much time to invest. Another problem I have is that when running FTP I can get logged in and change directories, but any attempt to open a data path connection (say a 'get' or an 'ls') gets "ftp: bind: can't assign requested address". While I know what this message represents, I can't imagine what SLIP could have done to keep the data channel from being allocatable. If anyone has info on SLIP on sparc's or war stories about SLIP on 4.0.3 and the zs interfaces and/or Telebits, it would be much appreciated. E-mail info and I'll summarize for those who request copies of the info. Thanks in advance, Ken Key (key@utkux1.utk.edu) Univ. of Tennessee Computing Center