<s>
A	O
mesh	B-Architecture
network	I-Architecture
is	O
a	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
topology	B-Architecture
in	O
which	O
the	O
infrastructure	O
nodes	O
(	O
i.e.	O
</s>
<s>
This	O
lack	O
of	O
dependency	O
on	O
one	O
node	B-Protocol
allows	O
for	O
every	O
node	B-Protocol
to	O
participate	O
in	O
the	O
relay	O
of	O
information	O
.	O
</s>
<s>
Mesh	B-Architecture
networks	I-Architecture
dynamically	O
self-organize	O
and	O
self-configure	O
,	O
which	O
can	O
reduce	O
installation	O
overhead	O
.	O
</s>
<s>
Mesh	B-Architecture
topology	I-Architecture
may	O
be	O
contrasted	O
with	O
conventional	O
star/tree	O
local	B-General_Concept
network	I-General_Concept
topologies	B-Architecture
in	O
which	O
the	O
bridges/switches	O
are	O
directly	O
linked	O
to	O
only	O
a	O
small	O
subset	O
of	O
other	O
bridges/switches	O
,	O
and	O
the	O
links	O
between	O
these	O
infrastructure	O
neighbours	O
are	O
hierarchical	O
.	O
</s>
<s>
While	O
star-and-tree	O
topologies	B-Architecture
are	O
very	O
well	O
established	O
,	O
highly	O
standardized	O
and	O
vendor-neutral	O
,	O
vendors	O
of	O
mesh	B-Architecture
network	I-Architecture
devices	O
have	O
not	O
yet	O
all	O
agreed	O
on	O
common	O
standards	O
,	O
and	O
interoperability	O
between	O
devices	O
from	O
different	O
vendors	O
is	O
not	O
yet	O
assured	O
.	O
</s>
<s>
Mesh	B-Architecture
networks	I-Architecture
can	O
relay	O
messages	O
using	O
either	O
a	O
flooding	B-Protocol
or	O
a	O
routing	B-Protocol
technique	O
,	O
which	O
makes	O
them	O
different	O
from	O
non-mesh	O
networks	O
.	O
</s>
<s>
A	O
routed	B-Protocol
message	O
is	O
propagated	O
along	O
a	O
path	O
by	O
hopping	O
from	O
node	B-Protocol
to	O
node	B-Protocol
until	O
it	O
reaches	O
its	O
destination	O
.	O
</s>
<s>
To	O
ensure	O
that	O
all	O
its	O
paths	O
are	O
available	O
,	O
the	O
network	O
must	O
allow	O
for	O
continuous	O
connections	O
and	O
must	O
reconfigure	O
itself	O
around	O
broken	O
paths	O
,	O
using	O
self-healing	O
algorithms	O
such	O
as	O
Shortest	B-Protocol
Path	I-Protocol
Bridging	I-Protocol
and	O
TRILL	B-Protocol
(	O
TRansparent	B-Protocol
Interconnection	I-Protocol
of	I-Protocol
Lots	I-Protocol
of	I-Protocol
Links	I-Protocol
)	O
.	O
</s>
<s>
Self-healing	O
allows	O
a	O
routing-based	O
network	O
to	O
operate	O
when	O
a	O
node	B-Protocol
breaks	O
down	O
or	O
when	O
a	O
connection	O
becomes	O
unreliable	O
.	O
</s>
<s>
A	O
mesh	B-Architecture
network	I-Architecture
whose	O
nodes	O
are	O
all	O
connected	O
to	O
each	O
other	O
is	O
a	O
fully	O
connected	O
network	O
.	O
</s>
<s>
Shortest	B-Protocol
path	I-Protocol
bridging	I-Protocol
and	O
TRILL	B-Protocol
each	O
allow	O
Ethernet	B-Protocol
switches	I-Protocol
to	O
be	O
connected	O
in	O
a	O
mesh	B-Architecture
topology	I-Architecture
and	O
allow	O
for	O
all	O
paths	O
to	O
be	O
active	O
.	O
</s>
<s>
IP	B-Protocol
routing	I-Protocol
supports	O
multiple	O
paths	O
from	O
source	O
to	O
destination	O
.	O
</s>
<s>
A	O
wireless	O
mesh	B-Architecture
network	I-Architecture
(	O
WMN	O
)	O
is	O
a	O
network	O
made	O
up	O
of	O
radio	O
nodes	O
organized	O
in	O
a	O
mesh	B-Architecture
topology	I-Architecture
.	O
</s>
<s>
It	O
can	O
also	O
be	O
a	O
form	O
of	O
wireless	B-General_Concept
ad	I-General_Concept
hoc	I-General_Concept
network	I-General_Concept
.	O
</s>
