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ETX-204A
Carrier Ethernet Demarcation Device

 Carrier-class Ethernet demarcation device with full support for Synchronous
Ethernet (ITU-T G.8262) and cellular backhaul synchronization applications,
including 1588-2008 end-to-end transparent clock

Flexible demarcation
device with timing MEF certified, supporting Ethernet Private Line (EPL) and Ethernet Virtual
Private Line (EVPL) services with flexible mapping of user traffic into Ethernetflows Robust bandwidth control mechanism and Service Level Agreement (SLA)
monitoring per Ethernet flow starting at customer premises

over packet

 Complete Ethernet OAM solution based on IEEE 802.3-2005 (formerly 802.3ah),
IEEE 802.1ag-D8, and ITU-T Y.1731 for Opex reductions

capabilities

 Test throughput across routed/switched networks up to line rate by using
Layer-2/3 loopback on single or multiple flows simultaneously

ETX-204A is a carrier Ethernet
demarcation device owned and operated
by the service provider and installed at thecustomer premises. It is the firstdemarcation device in the market that inaddition to its demarcation capabilities
provides full support for the Synchronous
Ethernet (SyncE) transfer network withuser clock synchronization for IP node Bbackhauling.
ETX-204A is part of RAD’s EtherAccess®
portfolio and features Carrier Ethernet
attributes, including Ethernet OAM forproactive SLA monitoring, quality ofservice (QoS) per Ethernet flow, advanced
traffic management capabilities, andpowerful bandwidth profiles fordifferentiated services – all starting at theservice handoff points.
The ETX-204A SyncToP™ suite includes
Synchronous Ethernet and a built-in
input/output clock interface. The devicecan use SyncE to receive the clock fromthe network, or can transparently forward
via IEEE 1588v2 with accurate timestamps.

The Access Company

ETX-204ACarrier Ethernet Demarcation Device

FLEXIBLE PORT OPTIONSQOSTYPICAL APPLICATIONSETX-204A is equipped with two Ethernet
network ports, supporting link protection
based on 802.3ad or dual homing forincreased service resiliency. The network
and user ports use SFP/UTP combo portsthat can operate as fiber optic SFP-based
interfaces or electrical RJ-45 interfaces.

Different service types require different
levels of QoS to be provided end-to-end.
QoS can be defined per subscriber as wellas per service. QoS has three aspects: rate
limitation, traffic shaping, and trafficprioritization.

ETX-204A is used in the following
MEF-defined applications:

FLEXIBLE TRAFFIC MAPPING
Traffic is mapped to the Ethernet flows(EVCs) using very flexible classification
criteria that can be combined, forexample:
Port-based (All-to-one bundling)VLAN + VLAN priority



VLAN + IP precedence

VLAN + DSCP

Ether Type

IP/MAC source/destination address

Untagged.

More classification criteria andcombinations can be found in the usermanual.

IP Node B backhauling – ETX-204A acts
as a transport demarcation device,connecting the base station to thepacket network. This provides a clear
demarcation between the service
domain and the transport domain withproactive service monitoring and easy
fault localization throughout the entire
network (see Figure 1).



Ethernet Private Line (EPL) –Site-to-site connectivity overdedicated bandwidth without service
multiplexing (see Figure 2)

Ethernet Virtual Private Line (EVPL) –Site-to-site connectivity over sharedbandwidth with service multiplexing(see Figure 3)

Ethernet LAN – Site-to-siteconnectivity over dedicated bandwidthwith or without service multiplexing.

Traffic policing is applied per flow or groupof flows, and operates according to thedual token bucket mechanism based onuser-configurable CIR + CBS and EIR + EBS.
Traffic can be limited to the line rate or
the data rate.
For prioritizing user traffic, ETX-204A
maps user traffic to up to eight separate
queues per service. Each can beconfigured as strict priority queues orweighted fair queues (WFQ).
The queues handle traffic with different
service demands, such as real-time traffic,
premium data, or best-effort data.
The device uses the WRED policy toensure that queues are not congested andhigh-priority traffic is not dropped.

Figure 1. IP Node B BackhaulingData SheetCELLULAR BACKHAULSYNCHRONIZATION
ETX-204A provides powerfulsynchronization capabilities, ensuringhighly accurate, seamless delivery of 2G,
3G, and 4G traffic over packet backhaul.
This enables mobile operators andtransport providers to eliminate the risk ofservice disruptions, impaired cell handoffs,
and excessive dropped calls, thereby
supporting reliable transmission ofreal-time traffic over PSNs.
The device also ensures QoS priorities forclock traffic and supports “SDH/SONET orBetter” performance requirements forvoice and video traffic, such as up to+-16 ppb (parts per billion) frequency
accuracy.

ETHERNET OAM
ETX-204A provides these types ofEthernet OAM:

End-to-end connectivity OAM based onIEEE 802.1ag-D8 that enables Ethernet
service providers to monitor theirservices proactively and guarantee thatcustomers receive the contracted SLA

End-to-end service and performancemonitoring based on ITU-T Y.1731.
Fault monitoring and end-to-end
performance measurement include
frame delay, frame delay variation,frame loss and availability.

CLOCK SYNCHRONIZATION
ETX-204A provides robust clock
synchronization and flexible timing modes,
including synchronization over packet
transport networks (SyncE). The clock
synchronization is performed according tothe ITU-T G.8261/G.8262 requirements.
MANAGED QOS IN NEXT-GENERATIONRADIO ACCESS NETWORKS
ETX-204A delivers managed quality ofservice in next-generation radio accessnetworks (RANs), allowing mobile
operators to enhance their 3.5G/4G
service performance by combining
Ethernet aggregation with OAM and SLA
enforcement capabilities – starting at theeNodeB, HSDPA base station, or WiMAX
cell site.

Single-segment (link) OAM according
to IEEE 802.3-2005 (formerly 802.3ah)
for remote management and fault
indication, including remote loopback,dying gasp, and MIB parameter
retrieval. Active and passive mode aresupported.

SFP/UTP COMBO PORTS
The SFP/UTP combo Ethernet ports are
FE/GbE auto detecting and canaccommodate a wide range of Fast
Ethernet and Gigabit Ethernet SFP
transceivers, allowing service providers toseamlessly connect customers located at
different distances from the device.

HIERARCHICAL SCHEDULING AND
SHAPING PER FLOW
Every flow has its own queues andscheduler. ETX-204A supports up to
220 services, and a total of 30 queue
blocks per network port. Each queue block
is a group of eight queues per CoS. Eachflow can be bound to each queue block.
L2CP HANDLING
ETX-204A can be configured to passthrough Layer-2 control frames (including
other vendors’ L2CP frames) across thenetwork, to peer supported protocols(IEEE 802.3-2005 and LACP), or to discard
the L2CP frames.
IEEE-1588V2 TRANSPARENT CLOCK
ETX-204A is aware of 1588v2 timing
packets, hence when it is necessary forthe device to transport them, it forwards
them in a way designed to ensure minimal
effect of packet delay variation according
to the IEEE-1588 End-to-End TC standard.
TRAP SYNCHRONIZATION
Traps are sent with sequence IDs tonetwork manager groups, to enable themanagers to detect when traps are lostand request the traps be sent again.

COMMAND LINE INTERFACE
Databases and scripts of commonly usedcommands can be easily created andapplied to multiple units using commandline interface.

Figure 2. Ethernet Private Line

Figure 3. Ethernet Virtual Private LineETX-204A
Carrier Ethernet Demarcation Device

LAYER-2/ LAYER-3 LOOPBACK WITH
MAC AND IP ADDRESS SWAPPING

capabilities ensuring

As services and networks become more
complex, tracking service and network
faults is very important for conforming tothe SLA. Therefore it is vital that theservice provider can perform network
loopbacks to easily track failures. Layer-2
and/or layer-3 network integrity can betested by a non-disruptive loopback
performed per flow, with swapping of
MAC address and optionally IP address.
When the loopback is activated, ETX-204A
exchanges the source and destination
MAC/IP addresses of the incoming
packets. This loopback passes through
Ethernet bridges (MAC address) androuters (IP address).

seamless delivery over

NETWORK INTERFACE REDUNDANCYPowerfulsynchronization

packet backhaul

Two redundancy modes can be applied:Link aggregation (LAG) based on802.3ad

Dual homing (1:1), allowing ETX-204A
to be connected to two different
upstream devices.

JUMBO FRAMES AND EGRESS MTU
The unit supports large frames of up to12 Kbytes.
ENVIRONMENTETX-204A/H is a temperature-hardened
version with matching SFPs intended forindustrial installations, available in both
19” and 8.5” enclosures.

COLOR-AWARE P-BIT RE-MARKINGThe VLAN priority bit in Ethernet frames
can be modified at network ingress
according to the ‘color’ of the frame. This
allows service consistency and QoS
continuity across color-aware (DropEligible-enabled) as well as color-unawarenetworks.
FAULT PROPAGATIONThe unit provides a user-configurable fault
propagation mechanism in the
network-to-user or user-to-network
direction. When a link failure is detected
or OAM failure received, ETX-204A canshut down the affected port or forward
the OAM failure message. The fault
propagation mechanism enables routersand switches connected to both ends ofthe link to reroute the traffic to theredundancy path.
DYING GASPETX-204A reports power failures todefined network management stations bysending an IEEE 802.3-2005 message andtrap, thus enabling the unit to properly
disconnect from the network with
notification of the reason for the service
problem.

Data Sheet

MANAGEMENTThe unit can be managed using thefollowing ports and applications:Local management via an ASCII
terminal connected to the RS-232 port

Remote inband management via useror network ports routed via separate
VLANs, Telnet, or RADview, RAD’s
SNMP-based management systemOut-of-band management via a
dedicated management port



SFTP – Secure File Transfer Protocol.

SECURITY
The following security protocols areprovided by ETX-204A to ensure client
server communication privacy and correctuser authentication:
SNMPv3



RADIUS (client authentication only)SSH for Secure Shell communication
session.

Specifications

USER INTERFACENETWORK INTERFACE

Number of Ports
Up to 5

Number of Ports
Up to 2 (redundancy)Type
SFP/UTP combo port

Type
SFP/UTP combo port:
Fiber optic:
Fast Ethernet (100BaseFx, 100BaseLX10,100BaseBx10, 100BaseT), SFP-based
Gigabit Ethernet (1000BaseSx,1000BaseLX10, 1000BaseBx10,1000BaseT), SFP-based

Connector
SFP slot or RJ-45

Copper: 10/100/1000BaseT (built-in)Connector
SFP slot or RJ-45
SFP Transceivers
For full details, see the SFP Transceivers
data sheet at www.rad.com
Note: It is strongly recommended to order thisdevice with original RAD SFPs installed. This will
ensure that prior to shipping, RAD has performed
comprehensive functional quality tests on theDHCP

entire assembled unit, including the SFP devices.

IP address, IP mask, and default gateway
can be automatically obtained using DHCP.

RAD cannot guarantee full compliance to productspecifications for units using non-RAD SFPs.

SFP Transceivers
For full details, see the SFP Transceivers
data sheet at www.rad.com
EXTERNAL CLOCK PORT
External input or output via optional
dedicated E1 or 2.048 MHz port (G.703),
RJ-45 connector
MANAGEMENT PORTS
Out-of-Band Ethernet Management
Port
Type: 10/100BaseT
Connector: RJ-45
Control PortInterface: V.24/RS-232 DCE
Connector: 9-pin D-type, female
Format: Asynchronous
Data rate: 9.6, 19.2, or 115.2 kbps

ETX-204A
Carrier Ethernet Demarcation Device

GENERAL
Max. Frame Size
12,288 bytes
Certifications
MEF 9, MEF 14: EPL and EVPL
ComplianceMEF 6 (E-Line – EPL and EVPL), MEF 10IEEE 802.3, 802.3u, 802.1d, 802.1q,802.1p, 802.3ad, 802.3-2005,
802.1ag-D8, ITU-T Y.1731

Indicators
PWR (green):
On –ETX-204A is powered up
TST/ALM (red):On – One of the Ethernet links is down
Blinking – Diagnostic loopback is active
LINK/ACT ETH (green):
On – Ethernet link OK
Blinking – Data is being transmitted
and received on the Ethernet link
LINK/ACT EXT CLK (green):
On – Station clock port connected
PowerAC power supply:
100–240 VAC, 50/60 Hz
DC power supply:
48V (-48 to 72VDC)
24V (20 to 32VDC)
Power Consumption
18.5W max

Physical
Unit with single power supply:
Height: 43.7 mm (1.7 in)
Width: 215 mm (8.4 in)
Depth: 300 mm (11.8 in)
Weight: 2.4 kg (5.2 lb)
Unit with dual power supply:
Height: 43.7 mm (1.7 in)
Width: 440 mm (17.4 in)
Depth: 240 mm (9.5 in)
Weight: 3.1 kg (6.8 lb)
Environment
Temperature:
ETX-204A: 0–50°C (32–122°F)
ETX-204A/H: -40 to 65°C (-40 to 149°F)
Humidity: Up to 90%, non-condensing

Data Sheet

Table 1. ETX Family Comparison TableETX-204A(Ver. 2.23)

ETX-203A(Ver. 3.02)

FeatureFunction

Basic NTU

Advanced NTU

Premium NTU

Bandwidth100 Mbps per port 100/1000 Mbps per 100/1000 Mbps per portport

Ethernet Ports(Net/net/user)

1/1/2
SFP/UTP

1/1/2
SFP/UTP

Network interface

Up to 2 × Fast
Ethernet

Up to 2 × Gigabit or Up to 2 × Gigabit or Fast Ethernet
SFP/UTP combo ports
Fast Ethernet

User interface

Up to 3 × Fast
Ethernet

Up to 3 × Gigabit or Up to 5 × Gigabit Ethernet
SFP/UTP combo ports
Fast Ethernet

Number of flows (EVC.cos) /shapers / MEPs192/2/128

192/30/128

Service type

EPL and EVPL (flow-based)

EPL and EVPL (flow-based)

Forwarding mode

Flow-based forwarding

Flow-based forwarding

Management interface

Command line

Command line

G.8031 protection

Yes

NoQoS

Rate limitation per flow
Traffic classification(Port-based, VLAN, 802.1p bits,ToS, DSCP)
Shaping

Rate limitation per flow
Traffic classification(Port-based, VLAN, 802.1p bits,ToS, DSCP)
Shaping

Bandwidth profile

CIR/CBS, EIR/EBS per EVC.COS

CIR/CBS, EIR/EBS per EVC.COS

RFC-2544 testingYes

NoMax. frame size

12,288 bytes12,288 bytes

T1/E1, T3/E3, OC-3/STM-1
bridging

Supported, includes integrated
management

No

Timing options

NoYes (SyncE)

Temperature-hardened option

NoYes

Power supply

Universal AC/DC

AC or DCPower supply redundancy

NoYes

1/1/2 or 1/1/4
SFP/UTP Combo

192/30/64

Data Sheet
ETX-204A
Carrier Ethernet Demarcation Device

B

STANDARD CONFIGURATIONS

ETX-204A/AC
ETX-204A/DC/4
ETX-204A/AC/4

Number of user ports(Default=2 user ports):
44 user ports
Timing(Default=No hardware support forsynchronization over packet):
SYE
SyncE full support

ETX-204A/DCR/H/4
SUPPLIED ACCESSORIESETX-204A/ACR/4

ETX-204A/DC/19/PTPAC power cord
DC connection kit (if DC power supply isordered)

SPECIAL CONFIGURATIONSOPTIONAL ACCESSORIESETX-204A /?/!/BT/B/

!

ETX-204A/AC/19/SYELegend?

Temperature range (Default=Regularenclosure):
H Temperature-hardened enclosure

Note: The ETX-204A/H version requires
industrially-hardened SFP transceivers.

!

BT

Power supply (Default=Single ACpower supply in 1U 8.5” enclosure):Single AC power supply
ACDC
Single DC power supply (48DC)
24DC Single DC power supply(24DC)
Dual AC power supply inACR
1U 19” enclosure
DCR
Dual DC power supply (-48DC)in 1U 19” enclosure
24DCR Dual DC power supply (24DC)
in 1U 19” enclosure
Enclosure (Default=19” metal
enclosure if ACR/DCR ordered,otherwise default=8.5” metal
enclosure if AC/DC ordered):
1919” metal enclosure

Power supply
Single AC power supplyACDC
Single DC power supply (-48DC)
24DC Single DC power supply (24DC)

WM-34
Hardware kit for mounting one ETX-204A
unit with 19” enclosure on a wall
WM-35
Hardware kit for mounting one ETX-204A
unit with 8.5” enclosure on a wall
CBL-DB9F-DB9M-STR
Control port cable
CBL-RJ45/2BNC/E1/X
Adaptor cable for converting a balanced
E1 interface to an unbalanced E1
interface, with an RJ-45 balanced
connector and two unbalanced BNC
coaxial connectors

RM-34
Hardware kit for mounting one ETX-204A
unit with 19” enclosure in a 19" rackRM-35/+
Hardware kit for mounting one or two
ETX-204A units with 8.5” enclosure in a19" rack+

Rack mount kit (Default=Both kits):
P1
Kit for mounting one unit
P2
Kit for mounting two units

Note: Units with dual power supplies require the19” enclosure.

International Headquarters
24 Raoul Wallenberg Street
Tel Aviv 69719, Israel
Tel. 972-3-6458181
Fax 972-3-6498250, 6474436
E-mail market@rad.com

www.rad.com

North America Headquarters
900 Corporate Drive
Mahwah, NJ 07430, USA
Tel. 201-5291100
Toll free 1-800-4447234
Fax 201-5295777
E-mail market@rad.com

Order this publication by Catalog No. 803922

The Access Company

254-110-06/12 (2.23) Specifications are subject to change without prior notice.  2009–2012 RAD Data Communications Ltd. The RAD name, logo, logotype, and the terms EtherAccess, TDMoIP and TDMoIP Driven,and the product names Optimux and IPmux, are registered trademarks of RAD Data Communications Ltd. All other trademarks are the property of their respective holders.

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