daemon@ucbvax.UUCP (05/26/84)
From: Manolis Katevenis <kateveni@Shasta>
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Date: Fri, 18 May 84 23:58:42 -0300
From: decwrl!decvax!mcvax!ariadne!kostas (Kostas Vassilakis)
Message-Id: <8405182058.AA06729@ariadne.UUCP>
To: ariadne!STAN-kateveni
Subject: net in Crete
Manoli geia chara,
sou stelnw esena xechorista ena minyma pou to echw steilei sto
net-nlang-greek. O logos einai oti den xerw an telica phtasei sto
net-nlang-greek. Se parakalw an den to deis sto net-nlang-greek
steile to esy.Mou phainetai oti echoun mperdephtei ligo ta
pragmata.
.............
Network in Crete:
Epofeloumenos tou net.nlang.greek the ithela na zitiso tis gnomes
kai tis symboules ton ellinon tou diktyou schetica me kapoio problima
pou echoume stin Crete kai parallila na symballoume stin diakinisi ton
minymaton meso tou net.nlang.greek.
To panemistimio Cretes mazi me to ereunitiko kentro Cretes (institouta
plirophorikis ,laser kai moriakis biologias) echei 3 H/Y ( VAXes ).
O enas apo autous einai kai i ARIADNE sto UUCP.
Oi epidioxeis mas einai:
1. Oi treis aytoi H/Y na milisoun metaxy tous ...
- Oi 2 apo tous 3 VAXes trechoun VMS
- i syndesi mallon tha ginei me leased-lines gia kaliteres
tachytites kai poiotita. Isos archika an den broume eukola
eutheies apo ton OTE na chrisimopoiisoume tilephono.
- Oi apostaseis metaxy ton VAXes einai 3-6 klm
2. Auto to mikro diktyo pou anaferetai parapano na "pesei" sto
EURONET.
- Liga logia gia to pws ginetai i syndesi me to EURONET stin
Ellada mesw tou OTE:
H syndesi ginetai mesw tou concentrator tou OTE stin Athina
me treis tropous,
(a) 300 bps dial up - yparchoun 70 ports
(b) 1200 bps me leased line (4-wire) - 3 ports
(c) 4800/2400 bps me leased line synchronous (x.25) -5 ports
To institouto pliroforikis echei stin diathesi tou ena port 1200 bps
To panepistimio Cretes echei mia leased line Crete-Athina (4-wires)
Prospathoume na exasfalisoume ena port 4800 .
Episis tha protimousame kai oi treis VAXes na echoun tin dynatotita
prosvasis sto EURONET ( ochi tautochrona isos). Gia mas i optimal
lysi tha itan perigrafica:
VAX 780 (VMS)
/
/
EURONET ------------------| communication|-- VAX 750 (VMS)
| box |\
\
VAX 780 (UNIX)
etsi kai ta 3 VAXes echoun prosvasi sto EURONET kai mporoun na
milisoun metaxy tous. To problima einai ti akrivws prepei na einai
auto to "communication box". (protimame kai ta tria na echoun
prosvasi dioti etsi otan o enas H/Y einai OFF oi alloi na mporoun
na miloun sto EURONET).
An tychon echete kapoia gnomi epano sto thema i an thelete kai
alles plirofories, epikoinonisate me ton upografonta stin dieuthinsi:
!mcvax!ariadne!kostas (Kostas Vassilakis -Institouto Plirophorikis)
Me pollous chairetismous apo tin Criti
Kostas
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