RAD Converts E3/T3

RAD introduced the RICi-E3 and RICi-T3 enabling service providers and ISPs to provide transparent Ethernet services

August 22, 2005

4 Min Read

TEL AVIV -- RAD Data Communications has introduced the RICi-E3 and RICi-T3, affordable intelligent converters that connect Fast Ethernet LAN over E3 or T3 circuits, enabling service providers and ISPs to provide transparent Ethernet services without interfering with user traffic.

"Although Fast Ethernet can connect directly to Next Generation SDH/SONET backbones, this isn't the case for the majority of the hundreds of thousands of existing SDH/SONET rings that are based on current SDH technology," explains Ramon Horkany, Product Line Manager at RAD. "Furthermore, some local or regional carriers or ISPs don't own their own SDH/SONET infrastructure, or they have a network which doesn't reach a particular area, and need to lease lines from other carriers to provide Fast Ethernet services to the customer."

The RICi-E3 and RICi-T3 support unframed E3 and framed or unframed T3 circuits respectively, and an Ethernet user port. The 802.1p priority scheme enables users to define different levels of Quality of Service (QoS) according to the application requirements.

The bridges can work in filter mode where they learn MAC addresses and filters local traffic, or in transparent mode where any received packet will be forward to the other interface. A VLAN tag stacking option enables transporting user traffic transparently, keeping all the user VLAN settings intact.

In cases of error conditions on the TDM port, a fault propagation feature tears down the link integrity on the Fast Ethernet port. This indicates the error conditions to the Ethernet device connected to the RICi-E3 or RICi-T3 and enables a connected router to automatically reroute traffic if required.

SNMP Fault Management

RADview Lite, RADs' new RADview service package, provides SNMP fault management, including SNMP traps, status polling and TFTP-based software and configuration download. Remote element management is available either through the ConfiguRAD Web-based application or Telnet.

The devices are managed in-band from the Fast Ethernet user port or remotely through the TDM port. Management traffic and user Ethernet traffic are transported together on the same Ethernet flow, separated by different VLANs. This provides complete separation between user traffic and the management traffic, ensuring management and user traffic security. DHCP client support is employed to automatically obtain IP address, IP mask and default gateway, saving precious installation time.

In a separate release:

RAD Provides Ethernet Solution

MAHWAH, New Jersey -- Color Broadband has grown into a top provider of data, voice, and wireless networking services in Southern California by being nimble. Not wanting to be tied down by unwieldy networking gear, it chose equipment from RAD Data Communications to pump high-volume Ethernet traffic through its wide area network.

The company, which began as a regional Internet Service Provider, has quickly expanded services to include wireless Internet, international voice trunks, SCADA (Supervisory Control and Data Acquisition) transport, and VoIP, Voice over Internet Protocol. Its strategy has paid off, making it the Los Angeles area’s largest wireless Internet service provider.

Saddled by what Tom Luckett, Color Broadband’s director of network operations, described as “700 pounds of steel,” the company had been using two general-purpose routers to transport Ethernet traffic over a SONET T3 (45 Mbps) link.

“Using those devices to terminate a single T3 was a bit ridiculous,” Luckett said. “For our capacity requirements, it was overkill. We didn’t need $12,000 worth of equipment at each end to perform this function. Plus, we weren’t interested in dealing with the devices’ physical size, power requirements, heat output, and ongoing maintenance costs.”

Pulse Inc., a RAD system integration partner, recommended the RICi-T3 Ethernet-over-T3 circuit converter. It has all the elements that Color Broadband was looking for – it is small, with low power consumption and heat output, and it is a fraction of the cost of the big routers that had been in place.

The RICi-T3 features wire-speed throughput, which Color Broadband’s old routers did not. In addition, it offers Quality of Service differentiation, Virtual LAN stacking, in-band and remote management capabilities, and fault propagation. With the RICi-T3, Color Broadband can transport customer Ethernet traffic over a T3 link as well as aggregate and backhaul that traffic to a central office switch in Long Beach.

RAD Data Communications Ltd.

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