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Pre-Aggregation for Mobile Applications

Deployed as a pre-aggregation platform for mobile backhaul, the Cisco ASR 903 Router can aggregate cell sites

and use Multiprotocol Label Switching (MPLS) as a transport for Radio Access Network (RAN) backhaul traffic.

The Cisco ASR 903 Router provides the timing services required in today’s converged access networks, by

offering integrated support for the Building Integrated Timing Supply (BITS), 10 MHz, 1 Pulse Per Second (1PPS)

and Time Of Day (TOD) interfaces. The Cisco ASR 903 Router also supports synchronous Ethernet (SyncE) and

IEEE-1588, and can act as the source for network clocking for time-division multiplexing (TDM), SDH and SONET,

SyncE, and GPS interfaces. In addition to the timing services, the Cisco ASR 903 Router can be deployed in small

and harsh environments, due to its shallow depth and qualification for extended temperature ranges.

Metro Ethernet Aggregation

The Cisco ASR 903 Router is built to meet service provider requirements for Carrier Ethernet aggregation. It is

optimized for remote central office and smaller aggregation sites where a full-featured, small-footprint, fully

redundant aggregation platform is needed. The Cisco ASR 903 Router offers service flexibility and delivers Layer

2, IP, and MPLS transport for advanced L2VPN, L3VPN, and multicast services.

Major Differentiators

The Cisco ASR 903 Router helps service providers deliver advanced services for residential broadband, mobile,

and Metro Ethernet applications. This allows an operator to provide differentiated and cost-effective services to

end-users.

Flexible Deployment Options

The Cisco ASR 903 Router is designed with a 3RU compact form factor to accommodate deployment in small

spaces. Available with a range of mounting options, the router can be deployed in space-constrained locations

such as ETSI 300-mm deep cabinets. The side-to-side airflow design allows two Cisco ASR 903 Routers to be

mounted back-to-back in a 600-mm cabinet, while the extended temperature range supported by the ASR 903

Router allows the router to be deployed in locations with minimum environmental control. Small footprint and

extended temperature range support allows service providers to extend the reach of their Carrier Ethernet

networks to more challenging and remote locations and yet save money on air conditioning.

High Availability and Modularity

The Cisco ASR 903 Router is a fully modular platform. Cisco offers a choice of two distinct route switch

processors (RSPs), AC and DC power supplies, a fan tray and a wide range of interface modules. The LAN

interfaces are available in copper and fiber Ethernet interfaces with speed ranging from 10Mbps to 10Gbps. The

WAN interfaces are available in speeds ranging from nxDS0 to OC12. The interface modules, power supplies, and

fan tray are all field removable. The design of the Cisco ASR 903 Router delivers in-box hardware redundancy for

all hardware components and supports software redundancy with In Service Software Upgrade (ISSU) support

when a pair of route switch processors are inserted in the chassis. All components are field replaceable.

Cisco Carrier Ethernet ASIC

needs of service providers, the Cisco ASR 903 Router delivers essential Carrier Ethernet technologies including:

Hierarchical QoS (HQoS), IPv4, IPv6, MPLS, and Hierarchical Virtual Private LAN Services (HVPLS). The ASIC

provides line-rate performance and supports advanced services including ACL and HQoS without affecting

performance. This Carrier Ethernet ASIC incorporates innovative traffic management capabilities while providing

intelligent packet switching and routing operations.

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Cisco ASR 900 Series Manual do Utilizador Página 2