Cisco Cisco IOS XR Software Release 4.2 Notas de publicación
3
Release Notes for Cisco ASR 9000 Series Aggregation Services Routers for Cisco IOS XR Software Release 4.2
OL-26126-01
System Requirements
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Quality of Service (QoS)—This supports QoS mechanisms including policing, marking, queuing,
random and hard traffic dropping, and shaping. Additionally, Cisco IOS XR supports modular QoS
command-line interface (MQC). MQC is used to configure various QoS features on various Cisco
platforms, including the Cisco ASR 9000 Series Aggregation Services Router. Supports the
following:
random and hard traffic dropping, and shaping. Additionally, Cisco IOS XR supports modular QoS
command-line interface (MQC). MQC is used to configure various QoS features on various Cisco
platforms, including the Cisco ASR 9000 Series Aggregation Services Router. Supports the
following:
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Class-Based Weighted Fair Queuing (CBWFQ)
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Weighted Random Early Detection (WRED)
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Priority Queuing with propagation
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2-rate 3-color (2R3C) Policing
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Modular QoS CLI (MQC)
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4-level Hierarchical-QoS
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Shared Policy Instances
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Manageability—This provides industry-standard management interfaces including modular
command-line interface (CLI), Simple Network Management Protocol (SNMP), and native
Extensible Markup Language (XML) interfaces. Includes a comprehensive set of Syslog messaging.
command-line interface (CLI), Simple Network Management Protocol (SNMP), and native
Extensible Markup Language (XML) interfaces. Includes a comprehensive set of Syslog messaging.
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Security—This provides comprehensive network security features including Layer 2 and Layer
3access control lists (ACLs); routing authentications; Authentication, Authorization, and
Accounting (AAA)/Terminal Access Controller Access Control System (TACACS+), Secure Shell
(SSH), Management Plane Protection (MPP) for control plan security, and Simple Network
Management Protocol version3 (SNMPv3). Control plane protections integrated into line card
Application-Specific Integrated Circuits (ASICs) include Generalized TTL Security Mechanism
(GTSM), RFC 3682, and Dynamic Control Plane Protection (DCPP).
3access control lists (ACLs); routing authentications; Authentication, Authorization, and
Accounting (AAA)/Terminal Access Controller Access Control System (TACACS+), Secure Shell
(SSH), Management Plane Protection (MPP) for control plan security, and Simple Network
Management Protocol version3 (SNMPv3). Control plane protections integrated into line card
Application-Specific Integrated Circuits (ASICs) include Generalized TTL Security Mechanism
(GTSM), RFC 3682, and Dynamic Control Plane Protection (DCPP).
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Availability—This supports rich availability features such as fault containment, fault tolerance, fast
switchover, link aggregation, nonstop routing for ISIS, LDP and OSPF, and nonstop forwarding
(NSF).
switchover, link aggregation, nonstop routing for ISIS, LDP and OSPF, and nonstop forwarding
(NSF).
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Enhanced core competencies:
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IP fast convergence with Fast Reroute (FRR) support for Intermediate System-to-Intermediate
System (IS-IS)
System (IS-IS)
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Path Computation Element (PCE) capability for traffic engineering
For more information about new features provided on the
Cisco ASR 9000 Series Aggregation Services Router platform for Cisco IOS XR Software Release
4.0.3, see the
Cisco ASR 9000 Series Aggregation Services Router platform for Cisco IOS XR Software Release
4.0.3, see the
in this
document.
System Requirements
This section describes the system requirements for
Cisco ASR 9000 Series Aggregation Services Router Software Release 4.2. The system requirements
include the following information:
Cisco ASR 9000 Series Aggregation Services Router Software Release 4.2. The system requirements
include the following information:
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