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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-28417-02
Introduction to the Cisco ASR 9000 Series Aggregation Services Router
Cisco ASR 9000 Series Router Overview
The router has links that extend outside the MPLS network. It provides access and aggregation services
for enterprise and service providers.
Features and Capabilities
The router is a scalable carrier-class distributed forwarding router, which is designed for redundancy,
high security and availability, packaging, power, and other requirements needed by service providers.
The router aggregates triple play Multi-service edge and Ethernet service traffic aggregating these
services to 10 Gigabit Ethernet IP, MPLS edge, or core. It support Ethernet, serial (including MLPPP),
frame relay and POS interface on the access side and Ethernet or POS interfaces on the core side.
The following sections describe the features and capabilities in detail:
• Cisco IOS XR Software, page 8
• Flexible Ethernet, page 16
• L2VPN, page 17
• Multicast, page 18
• OAM, page 19
• Layer 3 Routing, page 19
• MPLS VPN, page 21
• QoS, page 21
• MPLS TE, page 22
Cisco IOS XR Software
The router runs Cisco IOS XR Software, which offers the following:
• Rich Networking Feature Set—Cisco IOS XR Software represents a continuation of the Cisco
networking leadership in helping customers realize the power of their networks and the Internet. It
provides unprecedented routing-system scalability, high availability, service isolation, and
manageability to meet the mission-critical requirements of next-generation networks.
• Operating system infrastructure protection—Cisco IOS XR Software provides a microkernel
architecture that forces all but the most critical functions, such as memory management and thread
distribution, outside of the kernel, thereby preventing failures in applications, file systems, and even
device drivers from causing widespread service disruption.
• Process and thread protection—Each process, even individual process thread, is executed in its own
protected memory space, and communications between processes are accomplished through
well-defined, secure, and version-controlled application programming interfaces (APIs),
significantly minimizing the effect that any process failure can have on other processes.
• Cisco In-Service Software Upgrade (ISSU)—Cisco IOS XR Software modularity sustains system
availability during installation of a software upgrade. ISSUs or hitless software upgrades (HSUs)
allow you to upgrade most Cisco router software features without affecting deployed services. You
can target particular system components for upgrades based on software packages or composites that
group selected features. Cisco preconfigures and tests these packages and composites to help ensure
system compatibility.