The
ensures
numero
enables
informa
compli
each flo
nodes.
tables,
perform
cost, e
become
quality
interfac
begin b
4.1. Op
Figu
control
because
control
The
queues
tables
e data plane
s the hardwa
ous paramete
s the control
ation from
cated compu
ow in the ne
In the extre
taking acco
mance, ener
etc. This so
e scalable in
inter-contro
ces in the S
by detailing t
penFlow
ure 4.2 show
ller. The te
e, as we s
ller.
e OpenFlow
, the frame
associated
Figure 4.1
includes the
are is indepen
ers are taken
ler, which is
each clien
utations usin
etwork has its
eme case sc
ount of all t
gy consump
olution cann
n the future
oller protoco
SDN archite
the OpenFlow
ws an Op
erm “switch”
shall see, p
switch has
transmitters
therewith, a
1. SDN archite
e forwarding
ndent of the
n into accoun
s usually cen
nt in the n
ng load and
s own forwa
enario, each
the character
ption, reliab
ot be curre
with major
ols (see the
cture discus
w protocol.
penFlow sw
” is used
paths are us
two parts:
s and frame
and the sec
New-generat
ecture
g of packets
software net
nt. Indeed, t
ntralized, to r
network and
d QoS algor
arding tables
h flow could
ristics of th
bility, securi
ently scaled,
decentraliza
eastbound a
ssed in Chap
witch and
for the Op
sually determ
the part tha
e receivers,
cond part w
ion Protocols
. This soluti
tworks and th
this decoupli
recover prec
d to perfo
rithms, so th
in the netwo
d have its ow
he same clie
ity, resilien
, but it cou
ation and hig
and westbou
pter 2). Let
an OpenFlo
enFlow nod
mined by t
at contains t
with the flo
which gover
83
ion
hat
ing
ise
rm
hat
ork
wn
ent:
ce,
uld
ghund
us
ow
des
the
the
ow
rns
www.it-ebooks.info