M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
147
number
of
hops
allowed
for
RIP
is
15.
This
hop
limit,
however,
also
limits
the
size
of
networks
that
RIP
can
support.
A
hop
count
of
16
is
considered
an
infinite
distance,
in
other
words
the
route
is
considered
unreachable.
RIP
implements
the
split
horizon,
route
poisoning
and
holddown
mechanisms
to
prevent
incorrect
routing
information
from
being
propagated.
RIP Configuration
In
the
"RIP
Configuration"
window,
you
can
just
choose
the
version
of
RIP
protocol
to
activate
the
dynamic
routing
feature,
or
disable
it.
OSPF Scenario
Open
Shortest
Path
First
(OSPF)
is
a
routing
protocol
for
Internet
Protocol
(IP)
networks.
It
uses
a
link
state
routing
algorithm
and
falls
into
the
group
of
interior
routing
protocols,
operating
within
a
single
autonomous
system
(AS).
OSPF
is
perhaps
the
most
widely
used
interior
gateway
protocol
(IGP)
in
large
enterprise
networks.
IS
‐
IS,
another
link
‐
state
dynamic
routing
protocol,
is
more
common
in
large
service
provider
networks.
The
most
widely
used
exterior
gateway
protocol
is
the
Border
Gateway
Protocol
(BGP),
the
principal
routing
protocol
between
autonomous
systems
on
the
Internet.
OSPF
is
an
interior
gateway
protocol
(IGP)
for
routing
Internet
Protocol
(IP)
packets
solely
within
a
single
routing
domain,
such
as
an
autonomous
system.
It
gathers
link
state
information
from
available
routers
and
constructs
a
topology
map
of
the
network.
The
topology
is
presented
as
a
routing
table
to
the
Internet
Layer
which
routes
datagrams
based
solely
on
the
destination
IP
address
found
in
IP
packets.
OSPF
detects
changes
in
the
topology,
such
as
link
failures,
and
converges
on
a
new
loop
‐
free
routing
structure
within
seconds.
It
computes
the
shortest
path
tree
for
each
route
using
a
method
based
on
Dijkstra's
algorithm,
a
shortest
path
first
algorithm.
The
OSPF
routing
policies
for
constructing
a
route
table
are
governed
by
link
cost
factors
(external
metrics)
associated
with
each
routing
interface.
Cost
factors
may
be
the
distance
of
a
router
(round
‐
trip
time),
data
throughput
of
a
link,
or
link
availability
and
reliability,
expressed
as
simple
unitless
numbers.
This
provides
a
dynamic
process
of
traffic
load
balancing
between
routes
of
equal
cost.
An
OSPF
network
may
be
structured,
or
subdivided,
into
routing
areas
to
simplify
administration
and
optimize
traffic
and
resource
utilization.
Areas
are
identified
by
32
‐
bit
numbers,
expressed
either
simply
in
decimal,
or
often
in
octet
‐
based
dot
‐
decimal
notation,
familiar
from
IPv4
address
notation.
OSPF Configuration
In
the
"OSPF
Configuration"
window,
you
can
just
check
the
"Enable"
box
to
activate
the
OSPF
dynamic
routing
protocol
and
specify
its
backbone
subnet.
OSPF Area List
The OSPF Area List shows all OSPF area definition. There also be one "Add" button at
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