Cisco Cisco ASR 920-4SZ-A Router Data Sheet

 

 

© 2016 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. 

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ASR 920 routers offer a choice of AC and DC power supplies, which are redundant and built into the chassis. 

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

The time-division multiplexing (TDM) interfaces are available in the product models (ASR-920-12SZ-IM, ASR-920-

12SZ-IM-CC and ASR-920-24SZ-IM), with speeds ranging from n x DS-0 to OC-12/STM-4 for plesiochronous 

digital hierarchy (PDH), SDH, and SONET. The interface modules, power supplies, and fan tray are all field-

replaceable. 

Powered by the Cisco Carrier Ethernet application-specific integrated circuit (ASIC), which was designed 

specifically for service providers, ASR 920 routers deliver essential Carrier Ethernet technologies, including 

hierarchical quality of service (HQoS), MPLS, and Virtual Private LAN Services (VPLS). This custom and advanced 

ASIC design provides uninterrupted line-rate performance while delivering complex services such as access 

control list (ACL) and HqoS. The Carrier Ethernet ASIC integrates Cisco traffic-management innovation to deliver 

intelligent packet-switching and routing operations. 

In ASR 920 routers, each service is assigned enhanced QoS and security attributes. The router provides advanced 

per-traffic-class metering and offers bidirectional packet-count and byte-count statistics. The service offering is 

enhanced with operations, administration, and maintenance (OAM) functions that include Layer 2 Connectivity 

Fault Management (CFM), IP service-level agreements (SLAs) for Layer 3, and MPLS OAM. 

Benefits 

Cisco ASR 920 routers extend MPLS into the access layer by allowing service providers to initiate MPLS-based 

Layer 2 and Layer 3 VPN services from within the access layer. These routers give service providers the ability to 

expand MPLS toward their network edge to gain the advantages of a single unified MPLS control plane across 

their networks. They offer full VPLS support, allowing multipoint services definition. For additional flexibility, VPLS 

can be deployed as a full mesh or as Hierarchical VPLS (H-VPLS). 

The return on investment (ROI) on an access element is heavily influenced by its location in the network and 

proximity to customers. The ability to deploy ASR 920 routers, then activate features later, on demand, delivers 

investment protection. This protection allows flexible timing for deploying MPLS and10 Gigabit Ethernet services 

and boosting service capacity. 

Service-aware QoS allows service providers to expand and differentiate their services portfolio with highly 

advanced and differentiated SLAs. The HQoS capabilities of ASR 920 routers scale to eight queues per service, 

three levels of scheduling, and buffer volumes capable of accommodating today

’s most demanding wireline and 

wireless applications.