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RAD Data Communications 2011 Catalog

ETHERNET OVER FIBER

Hardware-based Ethernet OAM and

performance monitoring for SLA assurance

The ETX-204A combines Ethernet demarcation

with test-head functionalities, featuring a

complete Ethernet OAM suite that includes

Ethernet Link OAM (IEEE standard 802.3-2005,

formerly 802.3ah), Ethernet Service OAM (IEEE

802.1ag) and Performance Monitoring (ITU-T

Y.1731). These are enhanced with a built-in

RFC-2544 test generation engine for uni-

directional and bi-directional testing of

throughput, latency and frame loss. In addition,

the device incorporates Layer 1, 2 and 3

diagnostic loopback capabilities with MAC and IP

address swap.

Featuring ultra-fast, hardware-based processing

capabilities, the ETX-204A performs OAM and

PM measurements in under 1 microsecond with

maximum precision, offering the following

powerful benefits:

•

Immediate detection of loss of continuity

(LOC) to ensure under 50 ms protection

switching

•

Highly accurate frame loss measurements

with live-traffic testing

•

Flow-level monitoring enables simultaneous

processing of hundreds of OAM sessions

•

Loopback testing at line rate

The ETX-204A offers advanced SLA assurance

tools, including user-defined KPI (key

performance indicators) threshold configuration,

real-time SLA violation alerts and per-flow daily

statistics reporting.

Fault propagation mechanisms include

subscriber port shutdown, as well as alarm

indication signal (AIS) and remote defect

indication (RDI) per Y.1731, to allow immediate

notification and containment of service-affecting

problems.

The ETX-204A also supports AC and DC power

failure indication, using IEEE 802.3ah dying gasp

or SNMP traps.

Remote provisioning and traffic

management

The ETX-204A features advanced softcore

architecture for efficient handling of multi-

priority traffic on a per-flow basis. The device

enables multi-criteria traffic classification as well

as metering, policing and shaping to help

carriers rate-limit user traffic according to pre-

defined CIR (committed information rate) and

EIR (excess information rate) profiles.

Enhanced quality of service is further supported

by a hierarchical scheduling mechanism that

combines Strict Priority (SP) and weighted fair

queue (WFQ) scheduling, to efficiently handle

real-time, premium and best-effort traffic. The

ETX-204A also uses weighted random early

detection (WRED) policy for intelligent queue

management and congestion avoidance. Packet

editing functionalities, such as color-sensitive

P-bit re-marking, ensure metering continuity

across color-aware and color-blind metro

networks and WANs.

Uplink resiliency and protection

The ETX-204A offers various tools to ensure five

nines (99.999%) availability and speedy

restoration in the event of network outages.

These include dual homing link redundancy and

Link Aggregation (LAG) using 802.3ad LACP. In

addition, path protection is supported with

Ethernet Linear Protection Switching per ITU-T

G.8031 to ensure end-to-end service is

maintained when a fault is detected in one of

the logical EVCs.

Management and security

The ETX-204A features flexible management

capabilities, including local management via an

ASCII terminal (RS-232). In addition, remote

management can be performed either inband

using the network or user ports, or out-of-band

using a dedicated management port, while

maintaining separation between management

and user traffic via the use of VLANs. Advanced

FCAPS (Fault, Configuration, Administration,

Performance, Security) and diagnostic tools are

provided by RADview-EMS, RAD’s carrier-class

element management system, via an SNMP-

based GUI.

The ETX-204A also supports a variety of access

protocols, including CLI over Telnet, SNMP, and

TFTP. Incorporated security features include

Secure Shell (SSH), Web-based Secure Socket

Layer (SSL), SNMPv3, RADIUS and Terminal

Access Controller Access-Control System

(TACACS+), as well as management access

control list (ACL).

The ETX-204A can also be easily integrated in

third-party OSS.

•

Demarcation device for SLA-based

Ethernet business services and mobile

backhaul

•

MEF-9 and MEF-14 certified for EPL,

EVPL services

•

Multi-rate FE/GbE UTP/SFP combo ports

with auto detection

•

Enhanced traffic management with

multiple shapers and H-QoS per EVC

•

Ethernet OAM, performance monitoring

and built-in RFC-2544 tester

capabilities; L2/L3 diagnostic loopbacks

•

ITU-T G.8031 Ethernet Linear Protection

Switching

•

Temperature-hardened enclosure; AC/DC

redundancy

•

Sync-E, 1588v2 support

•

RADview-EMS management; CLI

configuration

End-to-end service and transport

demarcation

The ETX-204A Carrier Ethernet demarcation device

delivers SLA-based business services to the

customer premises over native Ethernet access. It

transports up to 1 Gbps of user throughput while

ensuring SDH/SONET-like performance and five

nines (99.999%) reliability. Converging voice and

data services over a unified Ethernet, IP or MPLS

network, a single ETX-204A device delivers 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.

The ETX-204A features two Gigabit Ethernet

network ports and two or four GbE user ports. All

ports are SFP and UTP compatible with auto-

detection of fiber and copper connections.

Incorporating RAD’s SyncToP platform of

synchronization and Timing over Packet feature

set, the ETX-204A utilizes standard technologies

such as 1588v2 Precision Time Protocol and

Synchronous Ethernet, to ensure highly accurate

traffic delivery in packet-based mobile backhaul

networks. For further details on the ETX-204A’s

SyncToP capabilities, please refer to page 72.

For latest updates visit www.rad.com

ETX-204A

Carrier Ethernet Demarcation

Device – Flexible Core

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