jejw@onion.cs.reading.ac.uk (Jerry West) (04/30/88)
Larry Kluger works for Sun EHQ, he used to be their DataComms guru. I believe he still maintains some of that function. The UUCP over X.25 was indeed developed in Sun Germany, however, by Lupe Christophe. Here is the blurb :- Sun Germany Consulting proudly announces the availability of a new Consulting Special Product, a variant of uucp supporting X.25 connections. The product consists of a new transfer program, uucico, that supports SunLink X.25 sockets for outgoing connections and implements the 'f'-protocol. The 'f'-protocol has been invented by Piet Beertema, CWI, Amsterdam in 1984 to be used over X.25 PDNs with hardware PADs. The version incorporated in uucico is the one distributed with 4.3 BSD. The 'f'-protocol features a 7 Bit data path as opposed to an 8 Bit data path required by the older 'g'-protocol, relies on implicit flow control (XON/XOFF between PAD and host), and will only check correct transmission when the whole file has been transmitted. It can thus only be used over very reliable links, like X.25 networks. Since there are no per-packet acknowledgements, throughput over PDNs is greatly enhanced while cost is much reduced. The new version of uucico prefers this protocol when available on both sides. It will fall back to the standard 'g'-protocol, implemented in all versions of uucp since it's inception, if the 'f'-protocol is not available. This version of uucico has been tested with a direct, asynchronous line between the two systems, a PAD with one system connecting with SunLink X.25, and both systems connected via X.25. The other new feature of uucico, support for SunLink X.25, affects only outgoing calls (master mode). Incoming calls connect via the X.29 server process and are treated like connections over asynchronous lines. Outgoing calls use X.25 domain sockets to access the slave system. It is not necessary to install SunLink X.25 when only the 'f'-protocol is the feature to be used. The standard version of uucico delivered with the respective SunOS release *can* be used with the new uucico, both over asynchronous lines and X.25 links. In the latter case, the system with the old uucico must be the slave system. I suggest you contact your local Sun office for pricing and availability. Rgds, Jerry West
bob@allosaur.cis.ohio-state.edu (Bob Sutterfield) (05/03/88)
In article <766@onion.cs.reading.ac.uk> jejw@onion.cs.reading.ac.uk (Jerry West) writes: |Here is the blurb :- | |Sun Germany Consulting proudly announces the availability of |a new Consulting Special Product... Doesn't this sound like it belongs in comp.newprod? Other vendors with similar products didn't announce them in these newsgroups. ------ Bob Sutterfield, Department of Computer and Information Science The Ohio State University; 2036 Neil Ave. Columbus OH USA 43210-1277 bob@cis.ohio-state.edu or ...!att!osu-cis!bob
rick@seismo.CSS.GOV (Rick Adams) (05/04/88)
It's pretty pitiful that Sun makes this a seperate product (read extra cost to the customer) instead of making it part of the standard uucp they provide. It's especially sad when you realize how little effort it takes to add the 'f' protocol to uucp. ---rick
joe@tekbspa.UUCP (Joe Angelo) (05/06/88)
Hope this isn't a stupid question -- but just how can you tell what protocols *your* uucico supports -and- can you force a particular protocol to be used (read: requested) with a specific connection? -- "I'm trying Joe Angelo -- Senior Systems Engineer/Systems Manager to think at Teknekron Software Systems, Palo Alto 415-325-1025 but nothing happens!" uunet!tekbspa!joe -OR- tekbspa!joe@uunet.uu.net
bob@cloud9.UUCP (Bob Toxen) (05/20/88)
In article <196@tekbspa.UUCP>, joe@tekbspa.UUCP (Joe Angelo) writes: > Hope this isn't a stupid question -- but just how can you tell what > protocols *your* uucico supports -and- can you force a particular > protocol to be used (read: requested) with a specific connection? > > Joe Angelo -- Senior Systems Engineer/Systems Manager > Teknekron Software Systems, Palo Alto 415-325-1025 > uunet!tekbspa!joe -OR- tekbspa!joe@uunet.uu.net Just have someone do "/usr/lib/uucp/uucico -r1 -x9 -syursys" and see what protocols your system announces that it has. I believe the diagnostic message (of the caller) will say "Pgx", for example for Protocols g and x. The caller will then say I'll take the g with the incantation "Ug" (use g). I tested this with one Virgin System V uucico calling another. I suspect any uucico will yield the same info. I believe the default algorithm is that the caller will request the first protocol that is in both the callers and called system's list of protocols. This can be overriden by putting a fourth field in the caller's USERFILE entry that specifies the protocol to use. I may eventually create a protocol that sends chunks larger than 64 bytes for better efficiency with high speed modems with data compression as well. -- Bob Toxen {ucbvax!ihnp4,harvard,cloud9!es}!anvil!cavu!bob Stratus Computer, Marlboro, MA Pilot to Copilot: What's a mountain goat doing way up here in a cloud bank?