FinM
Deployment
Guide
Release
4.5.10
3
‐
1
Chapter
3:
Network
Guidelines
3.1
Scope
of
This
Chapter
This
chapter
provides
a
description
of
the
typical
networking
topology
required
by
RADWIN's
Fiber
in
Motion
Train
‐
To
‐
Ground
solution.
3.2
Overview
Included
in
this
chapter
are:
•
A
general
introduction
to
the
network
requirements
for
trackside
and
on
‐
board
net
‐
works,
•
A
description
of
the
required
routers'
functionalities,
•
A
data
flow
description,
•
Sample
IP
and
VLAN
assignment
guidelines,
•
A
short
description
of
the
update
messages
during
handovers,
and
how
the
recom
‐
mended
network
topology
supports
these
messages.
The
typical
networking
described
in
this
chapter
enables
broadband
Train
‐
To
‐
Ground
communication,
while
maintaining
a
handover
time
of
less
than
50ms.
3.3
Wayside
Network
The
RADWIN
Fiber
in
Motion
best
‐
practice
solution
is
based
on
a
transparent
layer
2
architecture:
•
The
backhaul
network
is
connected
to
the
Radio
Base
Stations
(TBS)
deployed
along
the
tracks
side
via
GbE
copper
or
fiber,
as
a
layer
2
based
network.
Follow
the
guidelines
carefully.
Any
questions
or
clarifications
should
be
addressed
to
RADWIN's
Professional
Services
team
for
an
official
response.
Prior
to
project
rollout,
a
detailed
network
architecture
(including
topology
and
HW
to
be
used)
should
be
shared
with
RADWIN
for
confirmation.
