Cisco 15454-10GE-XPE transport networking transmission equipment Multi-Service Transmission Platform (MSTP)

Product Description

The Cisco® ONS 15454 Multiservice Transport Platform (MSTP) features a radical new approach to Ethernet over dense wavelength-division multiplexing (DWDM) transport and aggregation: a 4-port 10 Gigabit Ethernet XPonder that includes DWDM transmission functions and Layer 2 switching functions.

Background
Metropolitan (metro) transport networks must support numerous service demands, from low-rate DS-1/T1, DS-3/E3, 10/100BASE-T, and OC-3/STM-1 to higher-rate OC-12/STM-4, Gigabit Ethernet, OC-48/STM-16, OC-192/STM-64, and 10 Gigabit Ethernet services. In the recent past, as the broadband data services have been growing to become a major service and Ethernet is becoming a basic protocol, service providers need more and more integration between Ethernet switching and transport to optimize capital investment and minimize operating costs. Industrial trends indicate that DWDM is being used to transport the huge amount of bandwidth that broadband services are consuming. As a consequence, DWDM needs to evolve from being able to purely manage Layer 1 (where optical wavelengths are dispatched across the network) to offer Layer 1 and Layer 2 capabilities aimed at providing wavelength connection on top of VLAN management; quality-of-service (QoS) services; and multicast, broadcast, and unicast services – all this with a reliability comparable to or better than traditional time-division multiplexing (TDM) technology.

Product Overview
The Cisco ONS 15454 10 Gigabit Ethernet XPonder card portfolio includes two options: a 10 Gigabit Ethernet XPonder card and a 10 Gigabit Ethernet enhanced XPonder card. The portfolio provides a complete solution with the base XPonder optimized for Ethernet access applications, whereas the enhanced XPonder card provides additional capabilities for Ethernet aggregation rings.

The Cisco ONS 15454 10 Gigabit Ethernet XPonder is a single-slot Cisco ONS 15454 board providing four 10-Gbps Small Form-Factor Pluggable (XFP)-based 10 Gigabit Ethernet ports, two of which provide G.709 digital-wrapper and Enhanced Forward Error Correction (E-FEC) capabilities. You can also equip these two ports with DWDM XFPs to allow direct interconnection off the XPonder with the DWDM MSTP system. You can equip two client ports with various XFPs: 10BASE-LR (ER or ZR in the planning stage). You can configure the board in two different operating modes:

- Layer 2 switch: In this operating mode the XPonder behaves as a Layer 2 switch, including the G.709 Rapid Resilient Ring Ethernet Protection (GR3) mechanism.
- Multiple 10 Gigabit Ethernet transponders: In this operating mode the XPonder provides a one-to-one mapping between two 10 Gigabit Ethernet ports, enabling equivalent functions of two standard 10 Gigabit Ethernet DWDM transponders. Each of the 10 Gigabit Ethernet ports providing G.709 digital wrapper and E-FEC are equipped with DWDM XFP to directly interface the cards with the DWDM layer.

DWDM XFPs used as line interfaces provide one 10-Gbps, long-reach, ITU-compliant, 100-GHz–spaced optical interface using LC connectors supporting an OUT-2 G.709 digital wrapper and 10 Gigabit Ethernet LAN physical layer (PHY), or 10 Gigabit Ethernet WAN PHY interfaces. There are 40 different card types of DWDM XFP (one per wavelength), enabling support for 40-channel DWDM networks. When operated within the outlined specifications, each card transports the 10 Gigabit Ethernet signal with a maximum bite error rate (BER) of 10E-15.

You can deploy the XPonder cards in the 12 multiservice interface card slots of the Cisco ONS 15454 platform, in systems with or without cross-connect cards. The addition of a cross-connect card enables the platform to support hybrid applications, containing transparent 10-Gbps services as well as aggregation of other services supported by the Cisco ONS 15454 platform. The only required common card is the appropriate timing, communications, and control card.

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