Benefits
• Improve ROI and anchor carrier-class multiservice networks with
a system that provides world-class reliability and industry leading
port densities
• Deliver carrier-class availability, performance and reliability
• Support more end users and generate higher revenues with
the capacity and scalability you need
• Transport data cost-effectively by connecting with DWDM
• Avoid the need for costly overlay networks by adding IP services
to your existing ATM and frame relay (FR) networks with
MXOS™ software
• Simplify network management and help reduce operating costs with
Navis®network management software
GX 550®Multiservice
WAN Switch
Anchors ATM core networks to
deliver
highly reliable ATM and
frame relay services.
2
Improve ROI with a system that provides world-class reliability and industry leading
port densities to anchor carrier-class multiservice networks.
The Lucent GX 550®Multiservice WAN Switch
provides the multiservice protocol support,
capacity, port density, and availability you need to
provide ATM and FR services on a single, unified
multiservice network.
Designed for the core, the carrier-class GX 550®switch
provides the availability, service-aware routing and
high-speed switching you require at the heart of your
multiservice network. With 25 Gbps full duplex
ATM throughput, 32 Gbps full duplex packet
throughput, and optical interfaces that connect
directly to the transmission network, the GX 550
®
switch has the power to anchor the most
demanding service provider networks.
Robust QoS and industry-standard interfaces
make the GX 550®switch a natural component
of high-speed, high-density access deployments.
Providing carrier-class availability, performance and reliability
• Priority-based routing of hundreds of thousands
of circuits per second to help keep services up and
running if the transmission facility cannot be recovered
• Stratum 3 holdover timing to support continued
operations, even if the switch loses its primary
network-timing source
• Traffic prioritization control to help ensure that
management traffic is delivered regardless of
network congestion
The GX 550®switch also provides a rich set of line and
circuit statistics to help you demonstrate to your
business customers that your network has met the
availability requirements in your service
level agreements.
Industry leading availability
The GX 550
®
switch delivers
advanced availability features.
The GX 550®switch has a sophisticated feature set
that provides carrier-class availability. These features
go beyond redundant power supplies and cooling
systems to include:
• The ability to switch over from the active to the
standby switching fabric with no data loss or service
interruptions
• Distributed routing and signaling control to help
avoid single points of failure
• In-service software upgrades that can reduce user
traffic disruptions by taking advantage of hardwarebased switching during software reconfiguration
• Automatic protection switching (APS) to provide
millisecond recovery on transmission
facility failures
3
Superior capacity and scalability
The GX 550®switch offers the high-speed, industrystandard, optical interfaces essential to core and access
applications such as ATM access, private line and DSL.
A single switch supports up to 156 OC-3/STM-1 ports,
39 OC-12/STM-4 ports, or 9 OC-48/STM-16 ports –
although most deployments use a rich mix of port types.
The GX 550®switch also provides:
• Agile connection buffering with advanced traffic
management to efficiently mix all traffic classes and
users on a single network while maintaining QoS
• High rate of switched virtual circuit (SVC) setup –
5,000 SVCs per second and 8 million calls per busy
hour for continued scalability
• Industry-leading virtual circuit (VC) support with
a permanent virtual circuit (PVC) capacity of up to
1.28M simultaneous circuits, SVC capacity of up to
6.4M simultaneous circuits per GX 550 Switch
• Service-aware routing that provides end-to-end QoS
and creates enhanced services, such as virtual
private networks (VPNs)
• Advanced networking features to support secure and
wide-ranging connectivity with closed user groups (CUGs),
security screening, and SVC-to-PVC interworking
Cost-effective data transport
Today’s data networks utilize OC-12/STM-4 rates at
the core, but increasing data transport rates are
quickly making it critical to upgrade to OC-48/STM-16
backbones. As data moves at OC-48/STM-16 speeds
and as ATM switches become more resilient, the
distinction between switching and transmission blurs.
Rather than using a traditional SONET/SDH ring
backbone, you have the option to connect GX 550
®
switches directly to fiber through DWDM equipment
or direct fiber connections. This moves statistical
multiplexing into the transmission facility—giving
you more cost-effective and efficient data transport.
In addition, this streamlined network can help lower
operating costs and speed service provisioning.
Carrier-class MXOS™ Multiservice
Switch Operating Software helps
increase profitability
MXOS™ software supports ATM, FR and IP services
on the CBX 500®and GX 550®Multiservice WAN
Switches. MXOS™ enables delivery of multiple
services from a single network infrastructure, allowing
service providers to maintain existing profitable data
services and avoid the need for costly overlay IP
networks. It leverages Lucent’s experience in building
the most reliable voice networks and includes
reliability features, such as improved fault
management and improved manual and automatic
service recovery. These features have been adapted to
bring greater reliability to data switching networks.
MXOS™ helps reduce operations costs with pro-active
tools for network data collection and analysis, which
quickly identify potential problems and prevent
service disruptions.
Simplify network management and reduce
operating costs with Navis
®
software
Navis®network management software enables you to
deliver new services to your business customers
quickly and profitably. It provides end-to-end,
standards-based management of Lucent IP/MPLS,
FR, and ATM multiservice core and access networks.
Navis software offers exceptional management of a
GX 550®switch network, using industry-standard
TCP/IP protocols such as SNMP, TFTP and Telnet. In
addition, a command line interface provides Ethernet
and asynchronous serial console connections for
network monitoring, configuration and performance
statistics collection. Navis®software also delivers
sophisticated add-on functions, such as automated
provisioning, real-time statistics monitoring, and
accounting—giving you excellent network
management control.
Key features
• Protocol-independent multiservice switching —
Flexibility to change your service mix to meet demand
• Small footprint — Scale to 25 Gbps full duplex capacity
(32 Gbps for IP/MPLS) per chassis to provide 50/64
Gbps capacity per rack
• Superior availability — Lossless fabric switchover and
1+1 Automatic Protection Switching (APS) provide
proven reliability
• Excellent scalability — High port densities, high virtual
circuit support, and distributed routing and signaling
increase service capacity
Provides ATM-level QoS for all multiservice traffic
GX 550®Multiservice
WAN Switch
To learn more about our comprehensive
portfolio, please contact your Lucent
Technologies Sales Representative,
Lucent BusinessPartner or, visit our web
site at www.lucent.com or
www.lucent.com/products/
multiserviceswitching.
GX 550, MXOS, CBX 500 and Navis are
trademarks or registered trademarks of
Lucent Technologies.
Specifications are subject to change
without notice.
Copyright © 2004
Lucent Technologies, Inc.
All rights reserved
MSS v4 02/04
Summary of Technical Specifications
Description Specifications
1.Protocols Supported
ATM: UNI 3.0/3.1/4.0, TM 4.0, IISP, PNNI, B-ICI
Optical: DWDM
Circuit Emulation: via the GX 550®Extender Shelf
2.Physical Interface and Base Input/Output (I/O) Modules
Physical Interface Modules
a. 1-port OC-48/STM-16 Up to 9 ports per chassis
b. 1-port OC-48c/STM-16c with optional Up to 10 ports per chassis
full 1+1 of SONET/SDH APS protection
c. 1-port OC-12c/STM-4 Up to 39 ports per chassis
d. 4-port OC-3c/STM-1 Up to 156 ports per chassis
Interfaces support SONET/SDH laser-based intermediate reach (IR) and long-reach (LR) interfaces
Base I/O Modules
a. ATM Base I/O BI01, BI02, BI0-C
3.System Architecture
• Hot-swappable components • QoS with 6 quality queues per port
• Lossless switchover to redundant switch fabric • T1/E1 primary and secondary clock inputs
• Distributed routing and signaling • Stratum 3e timing
• Port and line card redundancy • Multimode LED interfaces
• Dedicated packet forwarding engines for IP/MPLS traffic
4.Multiservice Switch Operating Software (MXOS™)
Carrier-class, innovative software for increased switch reliability and network scalability,
IP/MPLS Feature Pack is available for advanced IP Services delivery
5.Navis®Network Management Software
• End-to-end, standards-based management of Lucent IP, MPLS, FR, and ATM
multiservice networks
• Speed service activation and assure QoS with automated provisioning, unified network
and service management
• Faster and easier service delivery, moves, adds and changes
• Helps minimize service provider training costs for multiservice solutions
• Fault and performance management
• Real-time statistics monitoring and accounting
6.Physical Dimensions
Size: Height 37” (93.98 cm)
Width 19” (42.26 cm)
Depth 23” (58.42 cm)
Rack Mount Options: EIA 19” or 23” midmount, central office style
7.Power Requirements
DC Power -48 to -60 volts DC
Current 75 amps @ -48 volts DC
Thermal Dissipation Maximum 3,000 watts (Average 1154 watts)
AC Power 120 to 240 volts AC
External AC power converter required
Current 48 amps @ 120 volts AC
Thermal Dissipation Maximum 450 watts
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