Xref: utzoo comp.unix.i386:8371 comp.dcom.sys.cisco:438 Path: utzoo!utgpu!watserv1!watmath!att!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!mstar!mstar.morningstar.com!bob From: bob@MorningStar.Com (Bob Sutterfield) Newsgroups: comp.unix.i386,comp.dcom.sys.cisco Subject: Re: ISC 2.2 SL/IP throughput? Message-ID: Date: 31 Aug 90 17:42:14 GMT References: <3694@wb3ffv.ampr.org> <26@astph.UUCP> <1990Aug23.160013.1199@scuzzy.mbx.sub.org> <1990Aug29.233628.2595@craycos.com> Sender: usenet@MorningStar.COM (USENET Administrator) Reply-To: bob@MorningStar.Com (Bob Sutterfield) Organization: Morning Star Technologies Lines: 28 In-Reply-To: ewv@craycos.com's message of 29 Aug 90 23:36:28 GMT In article <1990Aug29.233628.2595@craycos.com> ewv@craycos.com (Eric Varsanyi) writes: SCO Unix (3.2.2) with the vanilla driver on a vanilla serial board SunOS 4.0.3 on a 4/60 and a 4/110, on console serial ports Connection between 2 Telebit T2500's. Connection between a TB+ and a TB2500, using PEP 19200 hardware flow control on both sides Same here Kb/s (reported by ftp) Pep .799 Pep/compressed .823 (s110=1) We saw those sorts of numbers with vanilla SLIP. Things improved to around 1.0Kb/s with header-compressed SLIP. We saw numbers like 1.3-1.5Kb/s FTP throughput when using PPP. Does anyone know when/if Telebit is going to put IP header prediction into the modems (so they don't have to turn around for the ACK's)? Try using a smarter protocol, and the modems will do just fine. Header compression helps a *lot*.