Radwin 2000+ SERIES User Manual - 11.2.1

RADWIN

2000+

Series

User

Manual

Release

4.2.40

11

‐

1

Chapter

11:

Hub

Site

Synchronization

over

Ethernet

11.1

Scope

of

this

Chapter

This

chapter

describes

Ethernet

hub

site

synchronization

(EHSS),

and

how

to

implement

it.

11.2

RADWIN

Ethernet

HSS

11.2.1

Ethernet

HSS

Requirements

The

RADWIN

Ethernet

Hub

Site

Synchronization

(HSSoE)

method

provides

intra

‐

site

synchronization

without

the

need

for

external

cables

or

an

HSS

unit.

Sync

signals

are

exchanged

between

collocated

radios

over

the

regular

Ethernet

connection.

The

Ethernet

HSS

(HSSoE)

method

requires

Layer

2

Ethernet

connectivity

between

collocated

ODUs.

It

has

two

requirements:

•

Collocated

ODUs

providing

Ethernet

services

only,

should

be

connected

to

an

IDU

‐

H/

HP

instead

of

regular

PoE

devices.

Other

simple

switches

may

work

with

degraded

performance.

They

are

not

recommended

and

problems

arising

from

their

use

will

not

be

eligible

for

any

kind

of

support.

•

Collocated

RADWIN

2000+

Series

class

ODUs

providing

E1/T1

services

should

use

an

IDU

‐

C

or

IDU

‐

E

and

then

be

connected

to

an

IDU

‐

H/HP

functioning

as

a

switch.

One

of

the

LAN

ports

on

the

IDU

‐

C

or

IDU

‐

E

is

connected

to

any

of

the

six

IDU

‐

H/HP

PoE

ports

or

the

two

LAN

ports.

(This

is

possible

because

the

IDU

‐

C

or

IDU

‐

E

LAN

cable

only

uses

four

pins

for

data;

the

power

pins

are

not

used

so

there

is

no

risk

of

dam

‐

age

to

them.)

In

this

way,

up

to

eight

such

ODUs

may

be

collocated.

If

you

are

using

an

IDU

‐

C0

(GbE)

it

must

be

connected

to

the

IDU

‐

H/HP

LAN

port

only.

Connecting

it

to

the

P0E

ports

will

damage

the

unit

and

in

any

event,

it

will

not

work.