Products DSF2500

DSF2500
2.5 Gbps Data Service Framer

The DSF2500™ is a highly integrated Data Service Framer device capable of mapping Datacom traffic into protected SONET/SDH transport payloads. The DSF2500 is equipped with 10/100 Ethernet, Gigabit Ethernet and SPI-3 client interfaces, and maps packets/frames into SONET/SDH lines that range from OC-3/STM-1 to OC-48/STM-16. Ethernet over SONET/SDH (EoS) is supported through Virtual Concatenation (VC) with Link Capacity Adjustment Scheme (LCAS), with simultaneous use of mixed High-Order (STS/VC paths) and Low-Order (VT/VC paths).

Interfaces

• Equipment / client side:
• Up to 2 Gigabit Ethernet via GMII
• Up to 8 Ethernet / Fast Ethernet via SS-SMII
• 24-channel OIF compliant SPI-3 connection to packet processor/switch
• Line / trunk side:
• Protected OC-48/12/3 or STM-16/4/1
• TOH and POH Insert/Extract

• Network Access Equipment
• Telecom/Datacom Aggregation Equipment
• Add Drop Multiplexers (ADM)
• Multi Service Provisioning Platforms (MSPP, microMSPP)
• Multi Service Transport Platforms (MSTP)
• Multi-Service Customer Premises or Customer Located Equipment (e.g. Modems, microMSPP)
• Test Equipment
• For more sample solutions, please visit our solutions catalog.

• Support for SONET/SDH linear 1+1 APS and UPSR/SNCP with dual line interface
• Full SONET/SDH line, section and path termination with TOH and POH add/drop i/f
• Full TU-3/TUG-3 and TUG-2/TUG-3 support
• Static or dynamic bandwidth allocation for data interfaces:
• SPI-3: support for up to 24 logical channels with individual flow control
• Ethernet / Fast Ethernet / Gigabit Ethernet flow control and OAM messaging
• Simultaneous use of SPI-3 and Ethernet MACs
• Packet encapsulation using GFP or HDLC (X.86)
• Support for up to 24 Virtual Concatenation channels (VC) with fully dynamic and hitless Link Capacity Adjustment Scheme (LCAS)
• Up to 48 STS-1/VC-3 or 16 STS-3c/VC-4 high order paths
• Up to 336 VT1.5 or 252 VC-12 (622 Mbps) low order paths
• Up to 200 μsec differential delay compensation with internal buffer, or up to 250 msec with external SDRAM
• Simultaneous support of all services up to 2.5 Gbps aggregate rate
• Generic 16-bit microprocessor interface

A member of Galazar's second generation of Ethernet over SONET (EoS) mapping devices, the DSF2500 is targeted at highly integrated Ethernet transport access applications in next-generation SONET/SDH networks. Based on the latest SONET/SDH technology such as Generic Framing Procedure (GFP), virtual concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS) the DSF2500 brings efficient data transport to SONET/SDH networks enabling the carrier transition to IP/MPLS based service delivery. It's unique combination of Ethernet ports, Gigabit Ethernet ports and a Generic packet interface (SPI-3) and make it a flexible and expandable mapping chip which can accommodate a variety of system architectures and applications.

The DSF2500 enables efficient mapping and termination of Ethernet for transport across the metro SONET/SDH network. It's high density makes it ideally suited for performing Ethernet mapping functions, such as IP DSLAM backhaul, on a high density FE or GE line card in a SONET/SDH MSPP. It is equally well suited for termination of many Ethernet over SONET services in a SONET/SDH MSPP or Edge Router/Switch where traffic transported across a SONET/SDH metro network is being handed off to an MPLS/IP core network.

For more sample applications, please visit our solutions catalog.

Rapid and efficient development of a diverse product portfolio requires a solid and proven architecture which accommodates incremental development to meet requirements of multiple products. Products based on DSF2500 have the advantage of focusing effort on today's products while preserving the capability to leverage that effort to meet future market needs.

In an Ethernet mapping application the SPI-3 packet interface brings incredible flexibility and expansion capability to the DSF2500. Typical uses are to add L2/L3 packet processing functions, expand the number of Ethernet ports, or add GFP-T mapping of SAN protocols. The inherent channelization of this interface eliminates the need to modify or process packet headers to achieve separation of traffic being mapped to different SONET/SDH paths or virtual concatenation groups (VCGs). This interface provides protocol independent access to the Generic Framing Procedure block allowing customers to take advantage of the "Generic" nature of GFP and add new or custom GFP mappings as required. Simultaneous operation of the SPI-3 interface and the embedded Ethernet and Gigabit Ethernet MACs enables a flexible mixture of services or expansion for high density Ethernet mapping applications.

In a handoff application between a SONET/SDH access network and a MPLS/IP core network the high density of VCGs and SPI-3 interface are key features of the DSF2500. The SPI-3 interface is a generic packet bus supporting 24 logical channels of any bandwidth and protocol mix across a single physical interface enabling termination of a broad mixture of GFP mapped services of any bandwidth.

Software is a critical element to development of products containing complex System on a Chip solutions. Galazar provides comprehensive software with well defined and documented APIs which are well structured and OS portable. This software goes well beyond rudimentary register address abstraction including inherent capability for warm starts, interrupt management, LCAS controller and more. This advanced software enables a smooth, rapid integration of the DSF2500 into any systems' product portfolio.

Galazar's product portfolio contains additional products such as our Ethernet Port Expansion (MDX250™) and GFP-T processor for SAN protocols (MDX251™) to complement the DSF2500 in order to address additional market spaces and applications. Please visit our website for details.

For sample solutions, please visit our solutions catalog.

For more information on the DSF2500 device or application support, please contact your Galazar Networks Sales Representative or use our contact form.

Galazar Networks and the Galazar Networks logo are registered trademarks of Galazar Networks Inc. The information found in this document is subject to change without notice. This material is provided on an "as is" basis. Galazar Networks Inc. makes no representation or warranties of any kind, expressed or implied arising out of the application or use of any product described herein, neither does it convey any license under its patent rights, copyrights, or trade secrets nor the rights of others. This document is the property of Galazar Networks Inc. No part of this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, photographic, or otherwise, or used as the basis for manufacture or sale of any items without the prior written consent of Galazar Networks Inc.

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