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ETX-203AX Carrier Demarcation Device

(Part of the ETX-2 family)

One  popular model of the ETX-2 family is the ETX-203AX/GE/2SFP/4UTP which is only $935 USD
Prices on other models vary. Let's discuss your needs to see if the ETX-203AX/GE/2SFP/4UTP (catalog 6660040000 ) is right for you.
(For a limited time mention code AJ18 and get instant 8% discount off the $935, a savings of $74.80)

Key Points of the ETX-203AX  include:

· Feature-rich Carrier Ethernet demarcation device delivering ‘TDM-like’ experience with Ethernet end-to-end service
· MEF-compliant services with CIR/EIR traffic profiles and hierarchical scheduling providing traffic management at the edge of Carrier Ethernet networks
· Quick network fault detection with complete hardware-based OAM toolset: ITU-T Y.1731, IEEE 802.1ag, IEEE 802.3ah
· Throughput testing across routed/switched networks up to line rate by using Layer-2 RFC-2544 traffic generator and analyzer, and Layer-2/3 loopbacks

RAD ETX-203AX front view and rear view, ETX-203AX/GE30/2SFP/2UTP2SFP, ETX-203AX/GE/2SFP/2UTP2SFP, ETX-203AX/2SFP/2UTP2SFP, ETX-203AX/GE/2SFP/4UTP

The RAD ETX-203AX Carrier Ethernet demarcation device delivers SLA-based business services to the customer premises over native Ethernet access networks.

ETX-203AX ensures SDH/SONET-like performance and Five Nines reliability for IP VPN and VoIP transport, as well as for
dedicated Internet access and Layer-2 LAN-to-LAN services, all with differentiated quality of service and end-to-end monitoring.

The ETX-203AX architecture ensures powerful traffic management that allows the service provider to control bandwidth
and enforce traffic SLA. ETX-203AX features hardware-powered OAM for multiple flow monitoring at line rate. It provides 15 different SLA tools to assure and control service provider traffic around the clock.

RAD's ETX-203AX is a compact demarcation device that delivers MEF 9 and MEF 14 certified services. It provides Ethernet uplink NNI ports as well as UNI ports.

ETX-203AX is used as an Ethernet  demarcation device. ETX-203AX separates  the service provider network, the access  provider network, and the customer  network, providing proactive service  monitoring and easy fault localization  throughout the entire network (see Figure 1). 
End to en OAM between demarcation points using ETX-203AX, ETX-203AX/GE30/2SFP/2UTP2SFP, ETX-203AX/GE/2SFP/2UTP2SFP, ETX-203AX/2SFP/2UTP2SFP, ETX-203AX/GE/2SFP/4UTP
Traffic is mapped to the Ethernet flows  using very flexible classification criteria  based on incoming port (port-based 
all-to-one bundling), VLAN ID, VLAN  priority, IP precedence, DSCP, Ethertype,  and IP/MAC source/destination address. 
Classification is defined for both VLAN  tagged as well as untagged traffic. 

Layer-2 Control Processing 
The ETX-203AX can be configured to forward  Layer-2 control frames per EVC (including  other vendors’ L2CP frames) across the 
network, to peer supported protocols  (IEEE 802.3-2005 and LACP), or to discard  the L2CP frames. 

Featuring ultra fast, hardware-powered  processing, ETX-203AX performs OAM and  PM measurements in line rate with 
maximum precision, offering the following  powerful benefits: 
· Immediate detection of loss of  continuity (LOC), ensuring under 50 ms  protection switching 
· Highly accurate frame loss  measurements of live traffic 
· Flow-level (per CoS) monitoring,  enabling simultaneous processing of  multiple OAM sessions with E-LAN and  E-Tree support 
· Non-disruptive MAC and IP level  loopback testing of network integrity. 

ETX-203AX provides these types of  Ethernet OAM: 
· Single-segment (link) OAM according  to IEEE 802.3-2005 (formerly 802.3ah)  for remote management and fault  indication, including remote loopback,  dying gasp with SNMP trap, and MIB  parameter retrieval. Active and passive mode are supported. 
· End-to-end connectivity OAM based on IEEE 802.1ag that enables Ethernet  service providers to monitor their  services proactively and guarantee that customers receive the contracted SLA 
· End-to-end service and performance  monitoring based on ITU-T Y.1731.  Fault monitoring and end-to-end  performance measurement include  delay, delay variation, frame loss and availability. 

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

Traffic policing is applied per flow or group of flows, and operates according to the dual token bucket mechanism based on 
user-configurable CIR + CBS and EIR + EBS. Traffic can be limited to the line rate or the data rate. 

Forwarding with the ETX-203AX
Every flow per EVC or EVC.cos has its own queues and scheduler supporting strict priority and weighted fair queues (WFQ).
Queue blocks of eight queues per EVC are scheduled and shaped, forming an H-QoS model with shaped services and prioritized
classes of service. The WRED mechanism is used for smart packet drop. The 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 (drop
eligible-enabled) as well as color-unaware networks.

Smart SFPs
Integrated management of MiRICi smart SFPs provides TDM (E1/T1/E3/T3/OC-3/STM-1) connectivity over PDH or SDH legacy networks. ETX-203AX supports configuration and statistic collection for the smart SFP TDM port.

Dying Gasp
ETX-203AX reports power failures to defined network management stations by sending an IEEE 802.3-2005 message or
SNMP trap, thus enabling the unit to properly disconnect from the network with notification of the reason for the service problem.

Fault Propagation
The RAD ETX-203AX 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-203AX can shutdown the affected port or forward the
OAM failure message. The fault propagation mechanism enables routers and switches connected to both ends of the link to reroute the traffic to the redundancy path.

Link Protection
ETX-203AX provides the following network interface protection modes:
· 802.3ad link aggregation (LAG), providing 1:1 link protection with Link Aggregation Control Protocol (LACP) support
· Dual homing (1:1), allowing ETX-203AX units to be connected to two different upstream devices.

Ethernet Path Protection
ETX-203AX applies standard ITU-T G.8031Ethernet Linear Protection switching for fast protection of one or more EVCs from
end to end. The standard implementation ensures interoperability with third-party devices. With standard APS functionality, Ethernet OAM messages provide bandwidth-efficient unidirectional or bidirectional 1:1 protection.

The EVC protection path can be configured on the same network port, enabling the transport network to provide an alternative path for the working and protecting path. It can also be configured on separate network ports, adding protection at the access layer and enabling load balancing on network interfaces by splitting traffic between the two network ports.

The performance of the hardware-based Ethernet OAM together with protection switching for physical layer failure ensures fast protection in any scenario. The flow level protection provides a full set of manual commands for maintenance purposes.

The following security protocols are provided by ETX-203AX to ensure client server communication privacy and correct user authentication:
· SNMPv3
· RADIUS (client authentication)
· TACACS+ (client authentication and accounting)
· SSH (secure shell communication session)
· SFTP (secure file transfer).

The RAD ETX-203AX can be managed using the following ports and applications:
· Local management via an ASCII terminal connected to the RS-232 port
· Out-of-band management via a dedicated management port.
· Remote inband management via user or network ports routed via separate VLANs, Telnet, or an SNMP-based management system.

Command Line Interface (CLI)
Databases and scripts of commonly used commands can be easily created and applied to multiple units using command line interface.

Trap Synchronization
Traps are sent with sequence IDs to network manager groups, to enable the managers to detect when traps are lost and request the traps be sent again.

Zero Touch Provisioning
IP address and mask, default gateway, and software and configuration files can be automatically obtained using standard
DHCP client functionality. This enables seamless node setup and configuration for quick and scalable network setup and deployment as well as configuration consistency when nodes must be replaced.


The ETX-203AX provides a built-in RFC-2544 wirespeed traffic generator and analyzer for unidirectional and bidirectional testing
of throughput, latency, and frame loss. Based on standard OAM messages, the tests can be simultaneously performed
over multiple flows, at the EVC.CoS level.

Enhanced RFC-2544 functionality provides  service-oriented KPI analysis. SLA  conformance is measured per service  bandwidth and packet size, within a  user-defined amount of time, for faster  service introduction. 

Loopback Tests 
Layer-2 and/or layer-3 network integrity  can be tested by a non-disruptive  loopback performed per flow, with  swapping of MAC address and optionally  IP address. When the loopback is  activated, ETX-203AX exchanges the  source and destination MAC/IP addresses  of the incoming packets. This loopback  passes through Ethernet bridges (MAC address) and routers (IP address). 

Popular models include:

Product data sheet for the ETX-203AX (pdf)

Immediate price quote - Call 727-398-5252 or e-mail cs@bestdatasource.com

Don't forget to ask about  RADCare support for your RAD products.

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Last modified: January 30, 2021
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