Path: utzoo!utgpu!water!watmath!clyde!rutgers!husc6!m2c!ulowell!apollo!brezak From: brezak@apollo.uucp (John Brezak) Newsgroups: comp.protocols.iso Subject: Re: OSI PING? Summary: LLC Test Keywords: TCP-IP PING for OSI? Message-ID: <39f23ed0.8a06@apollo.uucp> Date: 28 Jan 88 15:47:00 GMT References: <163@tsdiag.UUCP> <236@tandem.UUCP> <141@babbage.acc.virginia.edu> Reply-To: brezak@union_j.UUCP (John Brezak) Organization: Apollo Computer, Chelmsford, MA Lines: 22 In article <141@babbage.acc.virginia.edu> mac3n@babbage.acc.virginia.edu (Alex Colvin) writes: >In article <236@tandem.UUCP>, kevinr@tandem.UUCP (4325) writes: >> In article <163@tsdiag.UUCP>, dennisb@tsdiag.UUCP writes: > >> > I have read alot about the famous Ping feature of TRP/IP and its ability > >The IEEE Logical Link Control Layer (IEEE 802.2, ISO ???), the upper end of the >link layer, has an XID packet type which is echoed by the receiver. It can >also provide information about the capabilities of the receiver. > >Does PING really use TCP? That seems excessive. You can also use an LLC Test message. This allows you to check the destination with a data packet to measure transit delay. -- ============================================================================================ John Brezak UUCP: {wanginst,yale,mit-eddie}!apollo!brezak Apollo Computer Inc. Phone: (617) 256-6600 Chelmsford, MA