High Availability; System Configurations - Cisco ASR 9000 Getting Started Manual

System Configurations

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High Availability

The router is intended for use in Enterprise networks that require high-availability. It is designed to
provide high MTBF (Mean Time Between Failures) and low MTTR (Mean Time To Resolve) rates. This
minimizes outages or and maximizes availability. The router achieves this using the following:
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System Configurations
The router runs Cisco IOS XR Software on the following standalone chassis types, available in AC or
DC versions:
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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
1-6
F I N A L D R A F T — C i s c o C o n f i d e n t i a l
MPLS TE Preferred Path: Preferred tunnel path functions let you map pseudowires to specific TE
tunnels. Attachment circuits are cross-connected to specific MPLS TE tunnel interfaces instead of
remote provider-edge router IP addresses (reachable using Interior Gateway Protocol [IGP] or Label
Distribution Protocol [LDP]).
Component redundancy
Duplex power supplies
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Cooling systems
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Fault detection
Management features
High availability features
Non-stop forwarding (NSF)—Cisco IOS XR Software supports forwarding without traffic loss
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during a brief outage of the control plane through signaling and routing protocol
implementations for graceful restart extensions as standardized by the IETF, NSF requires
neighboring nodes to be NSF-aware.
Process restartability (minimum disruption restart)
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Stateful switchovers
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In-service software upgrades
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MPLS TE FRR
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Bidirectional Forwarding Detection (BFD)
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Standard IEEE 802.3ad link aggregation bundles
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a 6-slot chassis
a 10-slot chassis
Chapter 1 Introducing to the Cisco ASR 9000 Series Aggregation Services Router
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