Path: utzoo!utgpu!water!watmath!clyde!rutgers!cmcl2!brl-adm!umd5!ames!pasteur!ucbvax!wb6rqn.UUCP!brian From: brian@wb6rqn.UUCP (Brian Lloyd) Newsgroups: comp.dcom.modems Subject: SLIP and Telebit modems Message-ID: Date: 14 Feb 88 18:12:00 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 17 We use Telebit Trailblazer+ modems here to communicate between systems running TCP/IP/SLIP. Throughput is enhanced by sending large segments and very large windows but if you get things too large you run the risk of overflowing the buffers in the TB+. The solution here is to enable the hardware handshaking (Trailblazer+ drops CTS and the host stops sending data). This will guarantee that the TB+ buffers will never overflow. Flow control in the reverse direction, e.g. from the modem to the host, has not been a problem since our implementation of SLIP on the Convergent boxes seems happy to accept data at 19,200 bps. Brian Lloyd, President Sirius Systems, Inc. (301) 540-2066 {bellcore, syscad, cp1, irs3, n3dmc}!wb6rqn!brian Share and enjoy!