4Links EtherSpaceLink Series, Руководство пользователя

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EtherSpaceLink-RG408
EtherSpaceLink family User Manual
2 . D escription of Oper a tion
Thi s se c t i o n des cri bes t h e mai n f e a t u r es o f t h e E t h e rS p ac e Li n k u n i t.
Th
e
E SL i
s
a high- p
e
rf o rma
n
c
e
E
t
h
e
r
net
-
t
o -S p ac
e
Wir
e
B ri
d
g
e t
ha
t
ca
n b
i
d
ir
e
c
t
i o
n
a lly r
e
l a y
t
raffic fr o m
a TC P/ I P E t h e r net c o nne c t i o n t o o ne S p ac e Wir e po r t.
O
n t
h
e RG
4
08
har
d w
ar
e pl
a
t
f
o
rm,
w
hich ha
s e
igh
t S p
ac
e
Wir
e
c
o nne
c
t o
r
s
,
t
h
e E S
L-
RG
4
01 / 8 p
r
o
vi
des
acc
ess t
o j u
st t
h
e
o
ne
S p ac
e
Wir
e
po r
t t
ha
t
ha
s been se
l
e
c
ted
a
t
a
n
y
t
im
e
, a
nd t
h
e
r
e
mai
n
i
n
g
se
v
en
S
p
ac
e
Wir
e po
r
ts
ar
e d
i
s
a
b l ed.
2 .1. Gener a l
Th
e
E SL i
s
c o
nne
c
ted t
o a
n
E
t
h
e
r
net net
wo r k a
nd
p a
ss
iv
e
ly w ai
ts
f o r a c o
nne
c
t
i o
n
fr o m a h o
st
c o m pu te r . It i s i dent ifi ed b y a n I P a dd r ess t ha t i s u sed b y t h e h o st c o m pu te r t o ma k e t hi s c o nne c t i o n.
Th
e
c o
nne
c
t
i o
n
i
s
ma
de
u
s
i
n
g a TC P
s
o c k
et
, w hich i
s
f low -c o
nt
r oll
ed
a
nd
i
s
ca p a
b
l
e
o f r
e
c o v
e
ri
n
g fr o m
e rr o r s t ha t migh t o cc u r o n t h e E t h e r net net wo r k bet w een t h e u se r a nd t h e E t h e rS p ac e Li n k u n i t.
Upo
n
ma k i
n
g
t
h
e
c o
nne
c
t
i o
n
,
t
h
e
E SL i
s set t
o a k
n
ow
n st
a
te
w i
t
h
t
h
e
S p ac
e
Wir
e
l i
n
k
s d
i
s
a
b
l
ed
,
t
h
e
l i n k s p eed set t o 10 M b / s a nd a ll t h e op t i o ns r eset. Th e u se r p r o gram m u st en a b l e t h e S p ac e Wir e l i n k s
be
f o r
e d
a
t
a ca
n be sent
o r r
e
c
e
iv
ed.
O
n
c
e en
a
b
l
ed
,
d
a
t
a i
s t
ra
ns
f
e
rr
ed
,
t
ra
ns
p ar
ent
ly , fr o m
t
h
e
S p ac e Wir e l i n k t o t h e a ppl ica t i o n p r o gram o n t h e h o st , a nd a l s o fr o m t h e p r o gram t o t h e S p ac e Wir e
l i
n
k
.
Th e r e i s n o l imi t a t i o n o n t h e s iz e o f p ac k et t ra ns f e r s i n e ach d ir e c t i o n - n o t e v en a s a r es ul t o f fi n i te
b
u ff
e
r
s
iz
es.
Th
e
u
se
r ha
s
c o m pl
ete
c o
nt
r ol o v
e
r
t
h
e
S p ac
e
Wir
e
p ac k
et
c o
ntent
a
nd st
r u c
t
u r
e;
a p ac k
et
ma y be sent o r r e c e iv ed i n se gm ents.
Th
e
h
o st p
r
o
gram ca
n
a
l s o
c
o nt
r
ol t
h
e t
ra
ns
mi
ss
i
o n s p eed o
f
t
h
e
S
p
ac
e
Wir
e l
i
n k s.
Th
e t
ra
ns
mi
t s p eed
ca
n be
cha
n
g
ed
a
t
a
n
y
t
im
e
, i
n
c lu
d
i
n
g i
n t
h
e
mi
dd
l
e
o f a p ac k
et.
S p
eed
cha
n
g
es
ar
e t
ra
ns
p ar
ent
a
nd d
o
n o t
r
e
q
u
ir
e l
i
n k d
i
s
c
o nne
c
t
i
o n. In
acc
o
r
d
a
n
c
e w
i
t
h
t
h
e E
CSS-
E
-ST-
5 0
-
12
C
S p
ac
e
Wir
e st
a
nd
ar
d
,
t
h
e
S
p ac
e
Wir
e
l i
n
k a lw a y
s st
ar
ts
a
t 10
M
b
/
s
a
nd t
h
en
, w h
en t
h
e
l i
n
k i
s est
a
b
l i
s
h
ed
, i
t
ma y
be
cha
n
g
ed t
o
t
h
e u se
r-
se l e
c
ted s p eed.
D
i
s
c o
nne
c
t
i o
n
o f
t
h
e
u
se
r’
s
p r o gram fr o m
t
h
e
E
S
L r
es
ul
ts
i
n t
h
e S
p ac
e
Wir
e
l i
n
k
be
i
n
g
d
i
s
a
b
l
ed
a
nd
a ll
o f t h e E S L op t i o ns be i n g r eset.
Th
e
E
t
h
e
r
S
p ac
e
Li
n
k ma y
be
op
e
ra
ted
i
n t
hr
ee
w a y
s:
By i ts op e ra t o r fr o m t h e ir c o m pu te r k e y b o ar d , u s i n g a s uppl i ed p r o gram t o g ene ra te a nd m o n i t o r
S
p ac
e
Wir
e t
raffic ma
n
u a lly
;
Thr ou gh t h e u se o f p r e - des ig ned c o mma nd s cri p ts t ha t r u n st a nd ar d sets o f tests a nd a n a ly se t h e
r
es
ul
ts
a u
t
o ma
t
ica lly
;
U
s
i
n
g c u
st
o m
e
r-cr
e
a
ted s
o f
t
w ar
e t
ha
t
i
nte
rac
ts
w i
t
h
t
h
e
ir
S
p ac
e
Wir
e net
wo r k
t
hr ou gh
t
h
e
E t
h
e
r
S p
ac
e
Li
n k
A
ppl
ica
t
i
o n P
r
o
grammi
n
g i
nte
rfac
e (
A
P I ) u nde
r
p
r
o
gram c
o nt
r
ol .
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