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In-Depth Information
The SSPR
ecause SSPR
SPR grows u
ncrease. Under
n order to redu
OPP-PRL and
robability of S
raffic load. Th
s obtained. Wi
his is because
lgorithms have
The simula
nd the best p
ecause it con
ADT_DiR and
According
multicast group
he network nod
algorithm has
can afford mo
up if the numb
r the SLPP alg
uce the cost o
SLP-ARL. M
SLPP is highe
his is because
ith respect to F
e SSMP cons
e the same com
ation results (s
performance.
nsumes more
PTP have bet
to Table 10
p sizes. Note th
des that could
s very small bl
ore flexible ba
ber of un-ove
gorithm, the n
of implementa
Moreover, with
er than MPSP
the MPSP alg
Figure15, SSM
sumes smaller
mputation com
see Tables 8 a
In addition, A
resources to
tter performan
0, TP-OSPT
hat multicast g
d be destination
locking probab
ackup capacity
erlapped work
network nodes
ations. Howev
h respect to T
P when traffic
gorithm can sh
MP performs b
r average netw
mplexity in the
and 9) show th
ADT_DiR ha
o meet user's
nce results than
has smaller b
group size is d
n nodes [5].
bility at low tr
y sharing. How
king segments
do not use an
ver, SLPP has
Table 8, one c
c load of SLPP
hare spare cap
better than M
work cost tha
eory.
hat CSP has t
as a higher b
s requirement
n ADT.
blocking ratio
defined as the
raffic loads (se
wever, the com
on a primary
ny wavelength
s higher comp
an see that th
P is lower tha
pacity when b
MPSP for all tra
an MPSP [38
ee Table 7)
mplexity of
y light-tree
converters
plexity than
he blocking
an MPSP's
ackup path
affic loads.
]. The two
be
S
in
in
O
pr
tr
is
T
al
the lowest blo
blocking ratio
ts [40]. How
ocking ratio
than PTP
wever, both
an
be
A
on than TP-S
maximum per
SPT in all
rcentage of
m
th
Fi
w
igure 15. Comp
wavelengths is 64
parison of block
4 and session si
king probability
ize is 10.
between MPSP
P and SSMP wh
hen the number
r of
Table 8. B
Blocking prob
bability vs. ses
required
ssion size whe
d reliability is
en W=32, load
0.90
d is 80 Erlang
gs and
Session s
size
15
Alg
gorithm
3
6
9
9
12
18
21
AD
AD
CSP
PTP
DT
0.1
0.12
0
0.2
0.3
0.345
0.3
55
0.37
DT_DiR
0.01
1
0.02
0
0.05
0.11
0.21
0.2
4
0.265
P
0.01
1
0.02
0
0.03
0.05
0.06
0.0
8
0.1
P
0.01
1
0.02
0
0.04
0.08
0.12
0.1
4
0.16
