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Nayna rolls first-mile Ethernet access boxes

Posted: 06 May 2004 ?? ?Print Version ?Bookmark and Share

Keywords:xspeed? nayna networks? xc12000? xc4000? xr2000?

Nayna Networks will unveil a first-mile Ethernet access box that allows carriers to choose between point-to-point Ethernet and Ethernet passive optical network (PON) connections through line-card swapouts.

Taking the experience it learned on the optical front and through XSpeed, Nayna refocused its efforts on designing a first-mile "native" Ethernet box that can support both point-to-point and PON connections. From these efforts, the company has developed three products - the 32Gbps XC12000, 16Gbps XC4000, and 2Gbps XR2000 systems.

Nayna uses the word native to describe its boxes due to the way it handles Ethernet traffic. In some first mile-Ethernet systems, Ethernet traffic will be terminated and then converted to another protocol for passage over a backplane or over a WAN network. Nayna took a different stab when developing its Ethernet systems. Using a switching device from SwitchCore, the company implemented a 2GbE redundant backplane. Thus, as IP traffic enters the system it can flow throughout the system without needing to be converted, said Jim Connor, director of marketing at Nayna.

Connor also uses the word native because the box can handle both point-to-point and PON traffic. "This is not just a PON box," Connor said.

To provide point-to-point Ethernet connectivity, Nayna is delivering a Fast Ethernet port that offers 12 links. The company is also offering a Gigabit Ethernet card that delivers two point-to-point links.

On the EPON front, Nayna has developed a single-channel PON card that can link up to 127 sites. Up individual PONs can be supported per rack, Connor said. Nayna has also crafted a version of its EPON card with a 1.2MHz RF modulator on board in order to support the delivery of CATV and satellite services over an EPON link.

While companies like Salira have discussed the specific chipset they are using in their PON solution, Nayna has opted to remain quiet on the EPON chipset front. However, Connor did say that the chipset used allowed Nayna to build a board that complied with IEEE's Ethernet in the First Mile (EFM) specification.

To achieve a throughput of 32Gbps on the XC12000 product, Nayna has crafted a switch card using a switching device from Lund, Sweden-based SwitchCore. "The SwitchCore product provides us with a lot of quality-of-service (QoS) capabilities," Connor said. Connor added that this level of QoS and throughput were needed to support the streaming of video and music over Ethernet connections.

The company is also looking closely at adding TDM and DSL line card capabilities to its access boxes. Connor said Nayna is currently working on a card that will take in TDM traffic and convert it to IP for transport over an Ethernet Network. Nayna also looking to support ADSL2 and VDSL in later line card designs, he added.

The XC12000, XC4000, and XC2000 systems are all available now. Connor didn't provide specific pricing for the systems. But, he said that the systems will cost a "few hundred dollars per subscriber."

- Robert Keenan

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