7200 OSP

The Xtera 7200 OSP provides a single, high density, cost-effective transport protocol-agnostic switching system. It combines WDM transport of an OADM with transparent wavelength (layer 0) switching, sub-wavelength aggregation/switching (L1), and VPN/tunnel switching of ethernet services (L2) switching/cross-connect functionality.

The 7200 OSP offers industry-leading optical WDM switching solutions and flexible support for Packet Optical Transport solutions for high-capacity optical transport networks. It utilizes multi-degree switching to aggregate multiple DWDM or CWDM data transport links from different linear networks, multiple access rings, or mesh network links, in the process eliminating back-to-back OADM nodes between rings or linear access networks.

With industry-leading GigE aggregation density per shelf, the 7200 OSP offers service providers a choice of single GigE per wavelength, dual GigE per wavelength, or 9 GigEs per wavelength of full wire-speed optical transport ideal for high-volume wireless backhaul, IPTV transport, or high-capacity GigE aggregation and back-haul to one or more data-centres.

The 7200 OSP also supports switching of GigE services onto or out of OC-192/STM-64 transport wavelengths throughout the network, eliminating the need for hair-pinning of client ports.

The 7200 OSP allows fully transparent transport for minimum latency applications, sub-wavelength aggregation/switching for optimal wavelength utilization, and powerful L2 switching at the tunnel level to provide either connection-less or connection-oriented ethernet transport. In a typical application the 7200 would connect to , and aggregate  a number of smaller sites . These sites would use smaller access multiplexors such as Xtera’s 3300 Optical Service Multiplexor (OSM) to connect the Ethernet and legacy transport services into the network. The 7200 OSP product utilizes highly flexible hardware and software architectures designed to support any existing or future ethernet transport protocols. This ensures that any Packet Optical Transport solution deployed using the 7200 OSP is future-proof, to accommodate whichever direction ethernet transport protocols evolve by means of a simple software update.

Benefits include:

• Integrated remote electrical loopbacks for centralized testing and trouble-shooting eliminating truck rolls
• Layer 1 Performance Monitoring on all client and line-side services
• Automatic protection switching based on both PM thresholds and LOS
• Integrated add-drop multiplexing of a wide-range of 8B/10B data protocols, GigE, SAN, SONET, SDH protocols onto a single wavelength
• Industry leading GigE aggregation support and density per shelf
• L2 Transport Protocol-Agnostic allowing support of multiple Packet Optical Transport Protocols to switch L2 Tunnels and providng QOS/COS facilitating enforced service-level agreements for ethernet services end-to-end across both transport and access networks
• Multi-degree support and switching for inter-ring, multiple access ring aggregation or full mesh networking support
• Carrier-Grade Architecture Optimized for high-resiliency

The Xtera 7200 OSP provides a very high density solution for optical service backhaul, ideally suited for metro-hub, or metro-core applications where high-reliability and high capacity are required.

The 7200 OSP offers the ability to use one node type to offer:

• Extremely low latency transparent wavelength connections for video and SAN transport applications
• Industry-leading GigE aggregation and back-haul using dual 9:1 SRM cards to carry high-volumes of GigE traffic at full wire-speed
• Rate-limited (100M, 200M, 300M, etc.) GigEs transport with rate enforcement and sub-wavelength switching at each site
• Optimized wavelength packing at each hop through the network of low-rate SONET/SDH and GigE traffic using sub-wavelength switching
• L2 tunnel switching to reduce tromboning
• Whichever next generation L2 Ethernet transport protocol meets your needs to provide encapsulation, policing, shaping and switching for optimized Packet Optical Transport support

The 7200 OSP allows fully transparent transport for minimum latency applications, sub-wavelength aggregation/switching for optimal wavelength utilization, and support for a selection of powerful L2 protocols switched at the tunnel level to provide either connection-less or connection-oriented ethernet transport.

Example 7200 network application

Transparent optical transport

The 7200 OSP is a carrier class transport platform that supports any protocol, and any data-rate from 100 Mb/s to 10 Gb/s.

16 degree electrical switching

8 - 40 Ch per degree full non-blocking optical switching ideal for low rate optical data switching between rings or across multiple mesh links in the WDM transport network.

Optional 2-4 degree ROADM

45 Ch per degree full non-blocking switching ideal for 10GigE tandem switching in networks with high numbers of pass-through traffic per site.

Transparent wavelength switching

A pair of redundant 320 Gb/s OEO-based switching fabrics offers unrestricted transparent non-blocking switching of any wavelength on any interface card, to any other wavelength on any other card. This flexibility enables touch-free provisioning between add/drop or pass-through wavelength configurations. The support of redundant switching fabrics ensures the greatest reliability.

Optimized wavelength packing

Non-blocking sub-wavelength switching provides the ability to ensure each wavelength is fully utilized by packing traffic on each wavelength up to 2.5G or 10G rate. Supports packing SONET/SDH, SAN, or GigE traffic onto the same wavelengths in bandwidth increments of STS-1 levels.

L2 packet optical transport

The protocol-agnostic product architecture allows the 7200 OSP to support any selection of ethernet transport protocols, supporting connection-less transport routing methods, or using encapsulation to offer connection-oriented ethernet transport, along with access level policing and traffic shaping for true carrier-class ethernet transport.

Hybrid L2 packet optical transport support

High flexibility in the switching hardware and software of the 7200 OSP allows support of multiple concurrent L2 transport protocols to allow support hybrid network architectures that utilize more than one ethernet-based transport protocol within the same network or between 7200 OSP rings, eg. one ring could use connection-oriented protocols, while the other ring could use connection-less protocols for transport.

Integrated WDM interfaces

40-CH, 16-CH, and 8-CH DWDM, and 8-CH CWDM trunk interfaces with integrated WDM mux/de-mux filters eliminate the need for external passive filters shelves and messy patch cords.

“Multi-degree OADM” functionality

Unlike OADMs, the 7200 OSP is not limited to only east and west interfaces. The 7200 OSP can have up to 16 WDM network/line trunks enabling it to support topologies ranging from a simple ring network to a multi-degree mesh WDM topology. Wavelengths can be freely switched between any WDM degree.

3R (reamplify, reshape and retime) regeneration at each hop—each wavelength through a 7200 OSP is re-timed, re-shaped, and re-amplified. This offers signal gain—instead of loss—at each hop.

Integrated wavelength conversion

The transparent OEO approach offers wavelength translation at each hop. This eliminates wavelength stranding, and allows an end-to-end lightpath to be freely configured over many hops and even over very different WDM trunks at each hop, such as traversing from a 40-CH DWDM network to an 8-CH CWDM network.

Universal interfaces

The 7200 OSP provides universal interfaces with pluggable optics (SFP/XFP) to reduce the number of interface cards and sparing costs. The same interface port supports any protocol (Ethernet, SONET/SDH, SAN, digital video, etc.) at any speed from 100 Mb/s to 2.7 Gb/s and 10 Gb/s.

Optical and Layer 1 performance monitoring on all wavelengths—a key shortcoming of an OADM network is the inability to monitor the performance of pass-through wavelengths. This results in limited fault isolation and poor service reliability. The innovative OEO approach of the 7200 remedies this problem with non-intrusive optical and Layer 1 performance and characteristics for all wavelengths that meet the Telcordia and International Telecommunications Union (ITU) standards-based performance monitoring methodology.

Automatic network discovery and lightpath setup

The 7200 OSP employs GMPLS as a basis for its internal network control protocols. Using open shortest path first (OSPF) routing protocol and link management protocol (LMP), the auto-discovery of fibers, nodes, cards, ports, trunks, and channels is enabled to support a dynamic optical transport layer.

Simplified link engineering

Since wavelengths are terminated at each 7200 OSP hop, power budget engineering with the 7200 OSP is greatly simplified to segment-by-segment engineering, versus the multi-hop optical complexities of OADM ring/band engineering, add/pass-through power balancing, etc.

Carrier-class design and reliability

The 7200 OSP offers 99.999 percent availability and reliability. The 7200 OSP supports redundancy of all shelf components, and optical channel protection for data paths with 1+1 client and line protection, and multi-segment network protection and diversity.

Point-to-point as well as point-to-multipoint wavelength connections—the OEO fabric of the 7200 OSP enables multipoint features such as the ability to bridge-and-roll a lightpath for scheduled maintenance.

Intelligent network management

With the 8600 NMS/8300 EMS, common operational tasks such as the setup, maintenance and tear-down of end-to-end optical lightpaths are fully managed from a central network operation center.