The Cisco® ASR 901 Series Aggregation Services Routers are environmentally hardened, high-speed, low-power-consumption routers optimized for any-generation cell-site Radio Access Network (RAN) backhaul and Ethernet access. By using Cisco ASR 901 routers, operators can reduce backhaul operating costs, simplify and converge their RAN and Ethernet access networks, and enhance their profit opportunities with mobile and premium Ethernet services.
RAN cell sites are places of transformation between mobile radio and mobile transport networks. Cost-effective RAN backhaul requires the ability to simultaneously aggregate the transport of traffic from both traditional and next-generation radios across multiple transport options available at the cell site. The Cisco ASR 901 routers are designed to minimize operating costs and optimize this radio-to-transport transformation through scalable time-division multiplexing (TDM) and IP/Ethernet interfaces for any combination of multivendor, multigeneration radios and transport networks.
The Cisco ASR 901 Series Aggregation Services Routers are compact cell-site and Ethernet access routers specifically designed to clock, aggregate, and backhaul mixed-generation RAN traffic. Cisco ASR 901 routers prioritize and process cell-site voice, data, and signaling traffic as part of the Cisco Unified RAN Backhaul solution for reliable transport across any available backhaul networks, including T1/E1, ATM, Carrier Ethernet, microwave, WiMAX, and service provider Wi-Fi networks.
Designed for cell sites and Carrier Ethernet access, the Cisco ASR 901 differentiating features include:
• Low power consumption
• Line rate performance for all Layer 2 and Layer 3 interfaces
• Flexible clocking options: TDM, Building Integrated Timing Supply (BITS), GPS (10Mhz, 1PPS/ToD),1588v2, and Synchronous Ethernet (SyncE)
• Extended operating temperatures
• Small form factor: 1 rack unit (RU) with 8.3 - 9.1 in. depth
• Redundant power and cooling
Figures 1 and 2 show the two basic 1-Gigabit Ethernet models of the Cisco ASR 901 Series routers.
Figure 1. Cisco ASR 901-12C-FT-D and ASR 901-4C-FT-D Routers
Figure 2. Cisco ASR 901-12C-F-D and ASR 901-4C-F-D Routers
Figures 3 through 6 show the four basic 10-Gigabit Ethernet models of the Cisco ASR 901 Series routers.
Figure 3. Cisco ASR 901-6CZ-FT-D Router
Figure 4. Cisco ASR 901-6CZ-F-D Router
Figure 5. Cisco ASR 901-6CZ-FT-A Router
Figure 6. Cisco ASR 901-6CZ-F-A Router
Cell-Site Backhaul for Mobile Applications
Deployed as cell-site routers for mobile backhaul, the Cisco ASR 901 routers can aggregate multiple base stations through multiple TDM, Ethernet, and IP interfaces, and can use Multiprotocol Label Switching (MPLS), Resilient Ethernet Protocol (REP), Multilink Point-to-Point Protocol (MLPPP), Layer 2 VPN (L2VPN), Layer 3 VPN (L3VPN), and other common transport protocols for RAN backhaul. Essentially, the routers prioritize, differentiate, and segment any combination of 2G, 3G, or 4G traffic for backhaul over any combination of IP/Ethernet and TDM (E1/T1) infrastructures (copper, microwave, or optical).
Metro Ethernet Access
Cisco ASR 901 routers allow service providers to simultaneously manage and operate Pseudowire Emulation Edge to Edge (PWE3) and Carrier Ethernet environments by supporting line-rate Layer 2 Ethernet operations, administration, and maintenance (EOAM), including Connectivity Fault Management (CFM), Ethernet Local Management Interface (E-LMI), REP, QinQ, and link aggregation.
Business Access Device
Cisco ASR 901 routers are optimized for remote-access and small aggregation sites where a fully featured, compact access platform is needed. The routers offer business service flexibility using an Ethernet virtual circuit (EVC) infrastructure and deliver Layer 2, IP, and MPLS transport for advanced Layer 2 and Layer 3 VPN services.
Cisco ASR 901 routers help service providers deliver advanced services and reduce operating costs for mobile backhaul and Carrier Ethernet access solutions. Highlights include the following.
Cisco ASR 901 routers help service providers reduce operating costs by optimizing energy efficiency, allowing cost-effective and responsible resource management. The routers are designed for low power consumption with Reduction of Hazardous Substances (RoHS) compliant, lead-free components. An indirect benefit is a significant reduction of carbon emissions.
With the Cisco ASR 901 routers, services can be prioritized and differentiated through hierarchical quality of service (HQoS) and security attributes. The routers offer advanced traffic analytics and performance monitoring and control, including per-traffic-class metering, bidirectional packets, and byte statistics. The service offering is enhanced with comprehensive OAM functionality, including Layer 2 CFM, IP service-level agreements (SLAs) for Layer 3, and MPLS OAM and TDM advanced timing and synchronization.
The Cisco ASR 901 routers deliver line-rate performance and flexible service scalability in a compact form factor. With support for up to 32,000 MAC addresses, up to 4000 bridge domains, and multiple hierarchical queues, the routers deliver high performance and scale for all mobile and Carrier Ethernet services.
The Cisco ASR 901 routers provide the timing services required in today's converged access networks by offering integrated support for the BITS, 10-MHz, 1 Pulse Per Second (PPS), and Time of Day (ToD) interfaces. The routers support SyncE on copper and optical ports and IEEE1588v2 Precision Time Protocol (PTP) clock recovery from T1/E1 ports.
Cisco network virtualization (nV) technology can simplify network operations by reducing the number of components that must be managed, supporting easier configuration. The result is increased network scalability, improved service velocity, and lower operating costs. The nV-capable Cisco ASR 901 routers can be deployed as satellites of a Cisco ASR 9000 Series system to reduce the complexity of today's mobile Internet networks.
Components and Options
Table 1 lists the hardware parts available for the Cisco ASR 901 Series.
Table 1. Hardware Components for the Cisco ASR 901 Series
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet-only interfaces, DC power
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet and TDM interfaces, DC power
Cisco ASR 901 Series Aggregation Services Router Chassis, PAYG 4 GE Port, Ethernet-only interfaces, DC power
Cisco ASR 901 Series Aggregation Services Router Chassis, PAYG 4 GE Port, Ethernet and TDM interfaces, DC power
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet-only interfaces, 10 GE, DC power, USB
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet and TDM interfaces, 10 GE, DC power, USB
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet-only interfaces, 10 GE, AC power, USB
Cisco ASR 901 Series Aggregation Services Router Chassis, Ethernet and TDM interfaces, 10 GE, AC power, USB
Cisco ASR 901 Accessories
Console cable: 6 ft with RJ-45 and DB9F
Console cable: 6 ft with RJ-45 and DB9F (spare)
Cisco ASR 901 Rack Mount Kits
Cisco ASR 901 Router 19-in. Rack Mount Kit
Cisco ASR 901 Router 19-in. Rack Mount Kit, spare
Cisco ASR 901 Router 23-in. Rack Mount Kit
Cisco ASR 901 Router 23-in. Rack Mount Kit, spare
Cisco ASR 901 Router Recessed Rack Mount Kit for 19-in. cabinet
Cisco ASR 901 Router Recessed Rack Mount Kit for 19-in. cabinet, spare
Cisco ASR 901 10GE Router 19-in. Rack Mount Kit
Cisco ASR 901 10GE Router 19-in. Rack Mount Kit, spare
Cisco ASR 901 10GE Router 23-in. Rack Mount Kit
Cisco ASR 901 10GE Router 23-in. Rack Mount Kit, spare
Cisco ASR 901 10GE Router ETSI Rack Mount Kit
Cisco ASR 901 10GE Router ETSI Rack Mount Kit, spare
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for 19-in. cabinet
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for 19-in. cabinet, spare
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for 23-in. cabinet
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for 23-in. cabinet, spare
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for ETSI cabinet
Cisco ASR 901 10GE Router Recessed Rack Mount Kit for ETSI cabinet, spare
Cisco ASR 901 10GE Router Wall Mount Kit
Cisco ASR 901 10GE Router Wall Mount Kit, spare
The Cisco ASR 901 Series supports a wide range of Small Form-Factor Pluggable (SFP) and enhanced SFP (SFP+) optics modules. Table 2 lists their part numbers. The operational temperatures supported for the optics are defined by individual SFP or SFP+ modules.
Table 2. SFP and SFP+ Modules Supported with the Cisco ASR 901 Series
• MPLS: MPLS using Label Distribution Protocol (LDP), EoMPLS, L3VPN, MPLS OAM, pseudowire redundancy, TE FRR, Labeled BGP (RFC3107)
• EOAM: CFM over pseudowire, IP SLA (LSP)
• TDM: T1/E1, Circuit Emulation Service over Packet Switched Network (CESoPSN) over MPLS and User Datagram Protocol (UDP), Structure Agnostic TDM over Packet (SAToP) over MPLS and UDP, PPP High-Level Data Control (HDLC) over MPLS, IP over PPP, HDLC, MLPPP, QoS over MLPPP, TDM Pseudowire redundancy, TDM Local Switching
Flexible Software Options
Cisco ASR 901 routers support the Cisco IOS Software Activation feature. With this feature, Cisco IOS Software feature sets can be activated by Cisco software licenses, providing a "pay as services grow" model. This model allows service providers to invest in software resources only when their businesses need it. The Cisco ASR 901 routers offer two Cisco IOS Software feature licenses. Each license enables feature activation on a per-chassis basis.
• The Base license includes support for Layer 2 and Layer 3 features, Sync-E, and 1588 Ordinary Clock.
• The Advanced IP Metro license adds the following capabilities to the Base license: TDM, MPLS, CESoPSN pseudowires, MPLS VPN support, Ethernet pseudowires and pseudowire redundancy.
Table 4 lists the main features in the Cisco IOS Software licenses for the Cisco ASR 901 Series.
Table 4. Software Feature Set in Cisco ASR 901 Series Licenses
Base Software Services (Default Image)
Advanced Metro IP Services
EVC infrastructure, 802.1Q, 802.1ad, QinQ, 802.3ah, and REP
1 The TDM ports (A901-12C-FT-D, A901-4C-FT-D, A901-6CZ-FT-D, and A901-6CZ-FT-A) and BITS ports require the use of shielded twisted pair cabling (STP) for EMC emissions.
2 The copper Ethernet ports require the use of STP cabling for NEBS EMC compliance. The TDM ports (A901-12C-FT-D, A901-4C-FT-D, A901-6CZ-FT-D, and A901-6CZ-FT-A) and BITS ports are Type-2 and Type-4 NEBS compliant.
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 13 are available as part of the Cisco Carrier Ethernet Switching Service and Support solution and are available directly from Cisco and through resellers.
Table 13. Service and Support
Cisco Total Implementation Solutions (TIS), available directly from Cisco
Cisco Packaged TIS, available through resellers
• Project management
• Site survey, configuration, and deployment
• Installation, text, and cutover
• Major moves, adds, and changes
• Design review and product staging
• Supplement existing staff
• Help ensure functions meet needs
• Mitigate risk
Cisco SP Base Support and Service-Provider-Based Onsite Support, available directly from Cisco
Cisco Packaged Service-Provider-Based Support, available through resellers
• 24-hour access to software updates
• Web access to technical repositories
• Telephone support through the Cisco Technical Assistance Center (TAC)
• Advance replacement of hardware parts
• Facilitate proactive or expedited problem resolution
• Lower total cost of ownership by taking advantage of Cisco expertise and knowledge