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ETX-220A 10 GbE Carrier Ethernet Demarcation Device

ETX-220A 10 GbE Carrier Ethernet Demarcation point for SLA-based Ethernet business services and mobile backhaul
RAD ETX-220A 10 GbE Carrier Ethernet Demarcation Device
Metro Ethernet Forum - MEFKey points of the RAD ETX-220A include:
• Carrier-class 10 GbE Ethernet demarcation device providing 40Gbps system throughput
• MEF compliant, supporting MEF applications Ethernet Private Line (EPL) and Ethernet Virtual Private Line (EVPL) with flexible mapping of user traffic into Ethernet flows
• Robust bandwidth control mechanism and Service Level Agreement (SLA) monitoring per Ethernet flow starting at customer premises
• 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
• Built-in RFC-2544 generator and analyzer

The ETX-220A is a Carrier Ethernet demarcation device that provides end-to-end service control and performance management across packet

The device delivers SLA-based business services to the customer premises over native Ethernet access networks. ETX-220A transports up to 40 Gbps
system throughput (20 Gbps ingress and 20 Gbps egress) while ensuring SDH/SONET-like performance and Five Nines reliability.

ETX-220A can deliver IP VPN, VoIP, and dedicated Internet access over the same physical link as a Layer-2 LAN-to-LAN service, all with differentiated quality of service and end-to-end monitoring.

ETX-220A can be used as follows:
• Ethernet 10 GbE demarcation device – ETX-220A can be used in a wholesale Ethernet environment to separate 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)

RAD ETX-220 10 GbE Ethernet Demarcation Device
• 3G/4G mobile demarcation device – ETX-220A can be placed in the concentration point and support hundreds of services and concurrent OAM sessions. (see Figure 2)
• Dual chassis – ETX-220A provides end-to-end traffic management and service control with redundancy (see Figure 3).

ETX-220A in a dual chassis application
ETX-202A Services
ETX-220A provides the following services:
• Ethernet Private Line (EPL) – ETX-220A provides site-to-site connectivity over dedicated bandwidth without service multiplexing
• Ethernet Virtual Private Line (EVPL) – ETX-220A delivers site-to-site connectivity over shared bandwidth with service multiplexing.

Traffic is mapped to the Ethernet flows using very flexible classification criteria that can be combined, for example:
• Port-based (All-to-one bundling)
• VLAN + VLAN priority
• VLAN + IP precedence
• Ether Type
• IP/MAC source/destination address
• UDP port
• Untagged.
More classification criteria and combinations can be found in the user manual.

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.

For prioritizing user traffic, ETX-220A maps user traffic to up to eight separate queues per service. Each can be configured as strict priority queues or
weighted fair queues (WFQ).

The queues handle traffic with different service demands, such as real-time traffic, premium data, or best-effort data.
The RAD ETX-220A uses the WRED policy to ensure that in case of congestion, green packets are not dropped (yellow packets may be dropped).

Every flow per EVC or EVC.cos has its own queues and scheduler. ETX-220A supports up to 320 flows, and a total of 64 queue blocks per network/user port, enabling shaping of the EVCs. Each queue block is a group of eight queues per CoS.

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.

The device can be configured to pass through Layer-2 control frames (including other vendors’ L2CP frames) across the network, to peer supported protocols
(IEEE 802.3-2005 and LACP), or to discard the L2CP frames.

The ETX-220A provides a built-in RFC-2544 wirespeed traffic generator and analyzer for unidirectional and bidirectional testing of throughput, latency, and frame loss.
The tests are performed over Layer-2, based on standard OAM messages, and can be performed for multiple flows.

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-220A exchanges the source and destination MAC/IP addresses of the incoming packets. This loopback passes
through Ethernet bridges (MAC address) and routers (IP address).

The RAD ETX-220A supports large frames of up to12 Kbytes.
Figure 2.
Ethernet Mobile Demarcation with ETX-220A
ETX-220A 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, and MIB parameter retrieval. Active and passive mode are supported.
• End-to-end connectivity OAM based on IEEE 802.1ag-D8 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
frame delay, frame delay variation, frame loss and availability. Featuring ultra fast, hardware-powered processing, ETX-220A 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 with live traffic testing
• Flow-level monitoring, enabling simultaneous processing of hundreds of OAM sessions
• Loopback testing at line rate.

ETX-220A delivers managed quality of service in next-generation radio access networks (RANs), allowing mobile operators to enhance their 3.5G/4G
service performance by combining Ethernet aggregation with OAM and SLA enforcement capabilities.

The RAD ETX-220A 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-220A can shut down 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.

Flow-based resiliency on uplinks is provided, as well as G.8031 – Ethernet linear protection on the network ports. ETX-220A implements EPS Ethernet Path
protection according to ITU-T G.8031. The device protects one or multiple EVCs in the network via standard APS messages and via OAM ETH AIS/LOC criteria, ensuring
protection switching under 50 msec. The protected EVC runs over one uplink or dual uplinks per customer requirement. The protection is available for the
following topologies:
• End-to-end EPS path protection for one or multiple EVCs transported over MPLS/VPLS access network
• Opposite standard PE supporting G.8031 EPS. Additionally, the following protection methods are provided via port-based resiliency on the network ports:
• Link aggregation (LAG) based on 802.3ad with or without LACP
• Dual homing (1:1), allowing ETX-220A to be connected to two different upstream devices.

ETX-220A 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.

ETX-220A/H is a temperature-hardened version with matching SFPs intended for industrial installations.

The RAD ETX-220A can be managed using the following ports and applications:
• Local management via an ASCII terminal connected to the RS-232 port
• Remote inband management via Ethernet port routed via separate VLANs, Telnet, or an SNMP-based management system
• Out-of-band management via a dedicated management port
• SFTP – Secure File Transfer Protocol.

The following security protocols are provided by ETX-220A to ensure client server communication privacy and correct user authentication:
• SNMPv3
• RADIUS (client authentication)
• TACACS+ (client authentication and accounting)
• SSH for Secure Shell communication session.

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.

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

Databases and scripts of commonly used commands can be easily created and applied to multiple units using command line interface.

ETX-220A product data sheet (pdf)

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

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Other RAD sections of interest:
RAD Accessories, RAD ATM products, RAD Baseband modems and last mile access, RAD Cables & Misc, RAD Digital Service Access Devices ( FCD ), RAD Fiber Optic modems and Converters, RAD IP and Ethernet Access, RAD Kilomux Data, Voice, Fax and LAN integrating Multiplexers, RAD LRS Modem rackRAD MegaplexRAD Networks Management, RAD Optimux Fiber Multiplexers, RAD Rate and Interface Converters, RAD Sharing Devices, RAD Short Range ModemsRAD T1/E1 Digital Cross Connects ( DACS ), RAD T1/E1 Digital Cross Connect (DACS) for single E1 / T1 applications, RAD TDMoIP, RAD Voice Interface Converters, RAD Voice Trunking Gateway

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Last modified: October 25, 2017
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