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- NET-6.TXT
- OPERATING PRACTICES
- -------------------
-
- No matter how efficient a network configuration may be, poor operating
- practices can create congestion. Since simplex networks perform best when
- lightly loaded, more "mileage" can be gained from them if the users were to
- employ common sense in this regard and practice PACKET CONSERVATION.
-
- Just as world-wide attention and awareness is being focused on the fact that
- our natural resources are dwindling, we packeteers could benefit if attention
- were focused on the impact our actions make on the network. Since the network
- is limited, it would be well to keep in mind every connect sent through the
- network could adversely impact someone else either up or down the line. This
- isn't to say one shouldn't use and enjoy the network. But such use should be
- adjusted in terms of consideration to others.
-
- With the price of IBM XT clones under the $350.00 mark, it's easy for someone
- to install a packet BBS these days. Or they can load it with TCP/IP
- software and add a node to the network. Unfortunately this is quite frequently
- done without giving any thought as to what impact it will make. It may well be
- the addition of another BBS in an area that already has adequate BBS service,
- could overload the network and thus cause dissention among the users.
-
- Frequently the operation of a TCP/IP node is harmful to the network function.
- This is true even when the TCP/IP node is not in active session. Remember the
- node barf spoken of previously? TCP/IP nodes add to the "node chatter" found
- in a dynamic network. This added overhead steals away circuit time available
- for other users. Network nodes provide connectivity and routes that benefit
- all users. Usually not true with TCP/IP nodes. The majority of TCP/IP nodes
- are nothing more than an end terminal for its owner. When in active session,
- TCP/IP nodes can adversely impact the "hidden transmitter syndrome". In the
- hands of an inexperienced person, operation of TCP/IP through the system can
- disconnect all users. An active node can prevent other usage for hours on end.
-
- We are not suggesting TCP/IP is bad. TCP/IP has many features that works well
- when used in its intended environment. This envirnoment is on a robust
- full-duplex 9600 baud or higher, circuit. Originally intended to overcome
- varying protocol compatibility problems on LL systems, TCP/IP has higher over-
- head than AX.25. As such it will never perform as efficiently. Using it on a
- multi-user simplex 1200 baud radio channel frequently causes problems to other
- users.
-
- Continuing with the concept that we users can modify our operating practices to
- make the present network more efficient, lets review and expand on the points
- made previously.
-
- We know simplex networks perform best under light to moderately loaded
- conditions. If we all were to practice "packet conservation", it stands to
- reason we will be able to get more efficient use out of our present systems.
- By packet conservation, I am referring primarily to avoiding the little verbose
- habits we tend to have. One of these (which is covered in nearly EVERY
- packet primer) is beaconing. There are exceptions to this, but in general it's
- better to NOT beacon. If one really feels a specific need to beacon, than it
- should be limited to intervals of not less than once every 15 minutes. Along
- simplex networks, user beacon transmissions may cause collisions with network
- nodes, thus QRMing the channel and delaying throughput. On a full-duplex
- repeater, beacons will delay ongoing traffic through the repeater.
-
- An extreme case of beaconing was noted a few years ago off one of the local
- nodes. Several BBSes had converged on the channel and apparently the SysOps
- felt the need to compete with each other. The result was various long beacons.
- Some of cartoon characters, some of page-length announcements, and each seemed
- to have a repetition rate of every two or three minutes. Inner-mingling the
- beacons was near constant BBS fwding activity. After a time, the few remaining
- users were oblivious to the beacon activity since they filtered the offending
- BBS callsigns out. The net result was the beacons and verbose connect
- messages were counter-productive inasmuch as many BBS users were driven away
- due to the congestion. Those who remained weren't able to enjoy ragchew
- activity and went into non-monitor status.
-
- In this case, too many BBSes sending too many beacons on the same frequency
- lead to the decline of local packet activity. It would then seem prudent
- that potential BBS SYSOPS make a determination whether additional BBS services
- are required on channels already occupied by BBSes. Factors influencing this
- determination would include network policy if any, potential user base, lack
- of specialized BBS services, and adequacy of BBS forwarding channels. With
- the availability of multi-connect BBS software, one full-time dedicated BBS
- in an area per frequency should be sufficient .
-