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Cisco ASR 901 Series Aggregation
Services Router Software Configuration
Guide
November 21, 2013
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 527-0883
Text Part Number: OL-23826-09
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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE
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CONTENTS Document Revision History xxxvii Objectives xlvii Audience xlvii Organization xlvii Conventions l Related Documentation li Obtaining Documentation, Obtaining Support, and Security Guidelines li CHAPTER 1 Cisco ASR 901 Router Overview 1-1 Introduction 1-2 Features 1-2 Performance Features 1-2 Management Options 1-3 Manageability Features 1-3 Security Features 1-4 Quality of Service and Class of Service Features 1-4 Layer 3 Features 1-5 Layer 3 VPN Services 1-5 Monitoring Features 1-5 CHA
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Contents Example: When Port Based License is not Installed 2-6 Example: When Port Based License is Installed 2-6 10gigUpgrade License 2-7 Example: When 10gigUpgrade License is not Installed 2-7 Example: When 10gigUpgrade License is Installed 2-8 Flexi License 2-8 Example: When Flexi License is not Installed 2-8 Example: When Flexi License is Installed 2-9 1588BC License 2-9 Example: When 1588BC License is not Installed 2-9 Example: When 1588BC License is Installed 2-9 Removing the 1588BC Licen
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Contents CHAPTER 4 Managing and Monitoring Network Management Features 4-1 Finding Feature Information 4-1 Contents 4-1 Network Management Features for the ASR 901 4-2 Cisco Active Network Abstraction (ANA) 4-2 SNMP MIB Support 4-2 Cisco Networking Services (CNS) 4-2 How to Configure Network Management Features on ASR 901 4-2 Configuring SNMP Support 4-3 Configuring Remote Network Management 4-8 Enabling Cisco Networking Services (CNS) and Zero-Touch Deployment 4-10 Zero-Touch Deployment 4-10
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Contents Understanding CLI Error Messages 5-4 Using Command History 5-5 Changing the Command History Buffer Size 5-5 Recalling Commands 5-6 Disabling the Command History Feature 5-6 Using Editing Features 5-6 Enabling and Disabling Editing Features 5-6 Editing Commands through Keystrokes 5-7 Editing Command Lines that Wrap 5-8 Searching and Filtering Output of show and more Commands 5-9 Accessing the CLI 5-9 Accessing the CLI through a Console Connection or through Telnet 5-9 Saving Configurat
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Contents Contents 8-1 Supported EVC Features 8-2 Understanding EVC Features 8-3 Ethernet Virtual Connections 8-3 Service Instances and EFPs 8-3 Encapsulation 8-4 Bridge Domains 8-5 DHCP Client on Switch Virtual Interface 8-6 Split-Horizon 8-6 Rewrite Operations 8-6 Configuring EFPs 8-7 Default EVC Configuration 8-7 Configuration Guidelines 8-7 Creating Service Instances 8-8 Configuration Examples of Supported Features 8-10 Example: Configuring a Service Instance 8-10 Example: Encapsulation Usi
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Contents Configuration Examples 8-22 Routed QinQ 8-23 Restrictions 8-23 Configuration Example 8-23 Bridge Domain Routing 8-24 Restrictions 8-24 Example: Configuring Bridge-Domain Routing 8-24 How to Configure DHCP Client on SVI 8-25 Configuring DHCP Client on SVI 8-25 Verifying DHCP Client on SVI 8-26 Configuration Example for DHCP Client on SVI 8-26 EFPs and Switchport MAC Addresses 8-27 EFPs and MSTP 8-27 Monitoring EVC 8-28 Sample Configuration with Switchport to EVC Mapping 8-29 Configurat
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Contents Verifying the LACP Transmit Rate 9-8 Configuring EtherChannel Load Balancing 9-8 Modifying MTU Size on Port-Channel 9-9 Restrictions 9-9 Verifying the MTU Size on Port-Channel 9-9 EVC On Port-Channel 9-10 Restrictions for EVC EtherChannel 9-10 Configuring EVC on Port-Channel 9-11 Verifying the Configuration 9-11 Troubleshooting 9-12 CHAPTER 10 Configuring Ethernet OAM 10-1 Contents 10-1 Understanding Ethernet CFM 10-2 IP SLA Support for CFM 10-2 Configuring Ethernet CFM 10-2 Default E
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Contents Setting Up and Configuring Ethernet OAM 10-35 Default Ethernet OAM Configuration 10-36 Restrictions and Guidelines 10-36 Enabling Ethernet OAM on an Interface 10-36 Enabling Ethernet OAM Remote Loopback 10-38 Configuring Ethernet OAM Link Monitoring 10-38 Configuring Ethernet OAM Remote Failure Indications 10-41 Configuring Ethernet OAM Templates 10-42 Displaying Ethernet OAM Protocol Information 10-45 Verifying Ethernet OAM Configuration 10-46 Understanding E-LMI 10-48 Restrictions 1
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Contents Scheduling IP SLAs Operations 11-14 Prerequisites 11-14 Verifying the Frame Delay and Synthetic Loss Measurement Configurations 11-15 Example: Verifying Sender MEP for a Two-Way Delay Measurement Operation 11-16 Example: Verifying Receiver MEP for a Two-Way Delay Measurement Operation 11-16 Example: Verifying Sender MEP for a Synthetic Loss Measurement Operation 11-17 Example: Verifying Ethernet CFM Performance Monitoring 11-17 Example: Verifying History for IP SLAs Operations 11-18 H
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Contents DETAILED STEPS 12-9 Configuring REP Interfaces 12-10 SUMMARY STEPS 12-10 DETAILED STEPS 12-11 Configuring REP as Dual Edge No-Neighbor Port 12-15 SUMMARY STEPS 12-15 DETAILED STEPS 12-16 Cisco ASR 901 Dual Rep Edge No-Neighbor Topology Example 12-18 Setting up Manual Preemption for VLAN Load Balancing 12-20 SUMMARY STEPS 12-20 DETAILED STEPS 12-20 Configuring SNMP Traps for REP 12-21 SUMMARY STEPS 12-21 DETAILED STEPS 12-21 Monitoring REP 12-22 SUMMARY STEPS 12-22 DETAILED STEPS 12-23
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Contents Understanding EoMPLS 15-1 Restrictions 15-2 Configuring EoMPLS 15-2 EoMPLS Configuration Example 15-3 Configuring Pseudowire Redundancy 15-4 Configuration Commands 15-4 Port Based EoMPLS 15-5 CHAPTER 16 Configuring MPLS VPNs 16-1 Contents 16-1 Understanding MPLS VPNs 16-1 Configuring MPLS VPNs 16-2 Configuration Examples for MPLS VPN 16-2 CHAPTER 17 Configuring MPLS OAM 17-1 Contents 17-1 Understanding MPLS OAM 17-1 LSP Ping 17-1 LSP Traceroute 17-2 LSP Ping over Pseudowire 17-2 Confi
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Contents Configuring BFD for OSPF on All Interfaces 19-3 Configuring BFD for BGP 19-4 Configuring BFD for IS-IS 19-4 Configuring BFD for IS-IS on a Single Interface 19-4 Configuring BFD for IS-IS for All Interfaces 19-5 Configuring BFD for Static Routes 19-6 Configuration Examples for BFD 19-7 BFD with OSPF on All Interfaces 19-7 BFD with OSPF on Individual Interfaces 19-7 BFD with BGP 19-8 BFD with IS-IS on All Interfaces 19-8 BFD with IS-IS on Individual Interfaces 19-8 BFD with Static Route
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Contents Configuring Circuit Emulation Service over Packet-Switched Network 21-14 Configuring a CESoPSN Pseudowire with UDP Encapsulation 21-15 QoS for CESoPSN over UDP and SAToP over UDP 21-18 Configuring Transportation of Service Using Ethernet over MPLS 21-18 Configuring L2VPN Pseudowire Redundancy 21-20 Example: Pseudowire Redundancy 21-22 Configuring Hot Standby Pseudowire Support for ATM/IMA 21-22 Configuring ATM/IMA Pseudowire Redundancy in PVC Mode 21-22 Configuring ATM/IMA Pseudowire
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Contents Configuring Network Clock in Interface Configuration Mode 22-6 Understanding SSM and ESMC 22-7 Synchronization Status Message 22-7 Ethernet Synchronization Messaging Channel 22-7 Clock Selection Algorithm 22-7 ESMC behavior for Port Channels 22-8 ESMC behavior for STP Blocked Ports 22-8 Configuring ESMC in Global Configuration Mode 22-8 Configuring ESMC in Interface Configuration Mode 22-9 Verifying ESMC Configuration 22-10 Managing Synchronization 22-11 Synchronization Example 22-12
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Contents Setting the TimeProperties 22-46 ASR901 Negotiation Mechanism 22-46 Static Unicast Mode 22-46 Configuring ToD on 1588V2 Slave 22-47 Troubleshooting Tips 22-47 CHAPTER 23 Cisco IOS IP SLA 23-1 Contents 23-1 Configuring IPSLA Path Discovery 23-1 Example for IPSLA Path Discovery 23-3 Two-Way Active Measurement Protocol 23-5 Configuring TWAMP 23-6 Configuring the TWAMP Server 23-7 Configuring the TWAMP Reflector 23-8 Configuration Examples for TWAMP 23-8 Example: Configuring the Router as
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Contents Individual Policing 24-15 Unconditional Priority Policing 24-16 Egress Policing 24-17 Marking 24-18 Congestion Management and Scheduling 24-19 Traffic Shaping 24-19 Class-Based Weighted Fair Queuing 24-21 Priority Queuing 24-23 Ingress and Egress QoS Functions 24-24 Configuring Quality of Service (QoS) 24-25 QoS Limitations 24-25 General QoS Limitations 24-26 Statistics Limitations 24-26 Propagation Limitations 24-27 Classification Limitations 24-27 Marking Limitations 24-28 Congestio
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Contents Configuring Shaping 24-47 Configuring Class-Based Traffic Shaping in a Primary-Level (Parent) Policy Map 24-47 Configuring the Secondary-Level (Child) Policy Map 24-48 Configuring Ethernet Trusted Mode 24-49 Creating IP Extended ACLs 24-49 Using Class Maps to Define a Traffic Class 24-50 Creating a Named Access List 24-52 Restrictions 24-52 What to do Next 24-53 TCAM with ACL 24-54 Verifying Named Access List 24-55 Configuration Example for Named Access List 24-56 QoS Treatment for Pe
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Contents Additional References 24-87 Related Documents 24-87 Standards 24-87 MIBs 24-87 RFCs 24-87 Technical Assistance 24-87 Feature Information for Configuring QoS 24-88 CHAPTER 25 Configuring MLPPP 25-1 Finding Feature Information 25-1 Contents 25-1 Prerequisites 25-2 Restrictions 25-2 MLPPP Optimization Features 25-2 Distributed Multilink Point-to-Point Protocol Offload 25-2 Multiclass MLPPP 25-3 MPLS over MLPPP 25-3 MPLS Features Supported for MLPPP 25-4 MPLS over MLPPP on PE-to-CE Links
