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The Cisco® ASR 903 Router is a full-featured aggregation platform designed for the cost-effective delivery of converged mobile and business services. With redundancy, shallow depth, low power consumption and high service scale, this 3-rack-unit (3RU) router is optimized for small aggregation and remote point-of-presence (POP) applications. The Cisco ASR 903 Router (Figure 1) provides a comprehensive and scalable feature set of Layer 2 VPN (L2VPN) and Layer 3 VPN (L3VPN) services in a compact package.
Figure 1. Cisco ASR 903 Router
Major Applications
Broadband Aggregation
The Cisco ASR 903 Router supports broadband aggregation for delivering "any-play" services (voice, video, data, and mobility). Designed to support thousands of subscribers, quality of service (QoS) on the Cisco ASR 903 Router is capable of scaling up to a large number of queues per device. This large number of queues, combined with a highly granular QoS algorithm (three-level hierarchical QoS), results in a greatly enhanced broadband user experience. This full-featured Layer 2 and Layer 3 switch router supports a variety of broadband applications including IPTV and video on demand (VoD), enhancing and extending the Cisco IP Next-Generation Network (IP NGN) architecture.
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 Ethernet interfaces are available in copper and fiber, with speed ranging from 10 Mbps to 10 Gbps. The legacy interfaces are available in speeds ranging from nxDS0 to OC-3/STM-1 for PDH, SDH, and SONET. The interface modules, power supplies, and fan tray are all field replaceable. The design of the Cisco ASR 903 Router delivers in-box hardware redundancy and supports software redundancy with In Service Software Upgrade (ISSU) support when a pair of route switch processors are inserted in the chassis.
Operational Efficiency
The Cisco ASR 903 Router features essential capabilities that help service providers simplify and automate the management of their networks, resulting in efficiency gains in the deployment and operation of the networks. The Cisco ASR 903 Router provides proactive diagnostic tools including Generic On-Line Diagnostics (GOLD) and Onboard Failure Logging (OBFL). These tools help service providers avoid potential problems before they occur, troubleshoot any problems, and when these are diagnosed, implement solutions.
System Design
The Cisco ASR 903 Router is a fully modular system, with a future-ready design. The chassis supports online field replacement and upgrades of all components. The chassis is designed to contain one fan tray, two power supplies, two RSP cards, and up to six interface module cards.
Fan Tray
The Cisco ASR 903 Router has a single fan tray slot, which must be populated for the system to operate. The fan tray contains redundant fans and the system will continue to operate on a single fan failure. The system has been designed to remain operational during the replacement of the fan tray. In addition to cooling the chassis, the fan tray also contains a connector for four dry-contact inputs and several system-level alarm LEDs.
Power Supply
Both an AC and a DC power supply are available for the Cisco ASR 903 Router. The system supports operation on a single power supply, while with two power supplies, both will function in a load-share configuration. Mixing of AC and DC power supplies in a single operational chassis is supported.
Route Switch Processor
The Cisco ASR 903 Route Switch Processor (RSP) is the centralized card in the system performing the data plane, network timing, and control plane functions for the system.
Two RSP slots are provided in the Cisco ASR 903 Router for optional redundancy. With two RSPs inserted in the Cisco ASR 903 Router, one RSP operates in active mode and the other RSP operates in hot standby mode. The RSP is a field replaceable unit (FRU) and can be online inserted and removed (OIR) while the system is operational. The removal or failure of the active RSP results in the automatic switchover to the standby RSP.
Interface Modules
The Cisco ASR 903 Router has six interface module slots. There are two types of interface module slots. Four slots (slots 0 to 3) support all of the available interface modules. The remaining two slots (slots 4 and 5) support only the Gigabit Ethernet and TDM Interface modules; the 10-Gigabit Ethernet modules are not supported in these slots. Interface Module Slot 5 is limited to a maximum of seven Gigabit Ethernet ports with the Cisco ASR 903 Route Switch Processor 1 (RSP1).
Software
The Cisco ASR 903 Router is supported in Cisco IOS® XE S Software, which is a modular operating system. Cisco IOS XE Software is designed to provide modular packaging, feature velocity, and powerful resiliency. For more information on the supported features and software capabilities, see the Cisco IOS XE Software for Cisco ASR 903 Router data sheet.
Network Management
The Cisco ASR 903 Router is supported in Cisco Prime™ for IP Next Generation Networks (IP NGN). Cisco Prime for IP NGN is an end-to-end network management solution that drastically simplifies the design, provisioning, and management of carrier-grade networks. It is a comprehensive solution that centralizes and automates service design, fulfillment, assurance, and performance analysis to help service providers and enterprises lower their costs while meeting high customer expectations.
In addition to the Cisco Prime for IP NGN support, the Cisco ASR 903 Router is also supported in the Cisco Configuration Engine. The Cisco Configuration Engine delivers Zero Touch Deployment (ZTD) capability for the Cisco ASR 903 Router, which drastically reduces the time required to deploy a network.
Table 1 lists the hardware parts available for Cisco ASR 903 Router.
Table 1. Hardware Components for Cisco ASR 903 Router
Product Specifications
Tables 2 through 4 list the product, power, and environmental specifications for the Cisco ASR 903 Router. Table 5 provides safety and compliance information.
Table 2. Cisco ASR 903 Router System Specifications
Table 3. Power Specifications
Table 4. Environmental Specifications
1. Optics used may limit the temperature range.
2. Not more than the following in a one-year period: 96 consecutive hours, or 360 hours total, or 15 occurrences.
3. The above are for normal (nonfailure) operation. When operating with a fan failure, the above may be exceeded.
Table 5. Safety and Compliance
1. Notable exception: Using external protection for 5kV surge compliance.
2. Notable exception: All cabling is provided through the front panel.
Warranty Information
Find warranty information on Cisco.com at the Product Warranties page.
Service and Support
Cisco offers a wide range of services programs to accelerate customer success. These innovative services programs are delivered through a unique combination of people, processes, tools, and partners, resulting in high levels of customer satisfaction. Cisco Services help you protect your network investment, optimize network operations, and prepare your network for new applications to extend network intelligence and the power of your business. For more information about Cisco Services, refer to Cisco Technical Support Services or Cisco Advanced Services.
Cisco is committed to minimizing your total cost of ownership. Cisco offers a portfolio of technical support services to help ensure that Cisco products operate efficiently, remain highly available, and benefit from the most up-to-date system software. The services and support programs described in Table 6 are available as part of the Cisco Carrier Ethernet Switching Service and Support solution and are available directly from Cisco and through resellers.
Table 6. Service and Support