IPv6 on VPN Provider Edge Routers, 37-4 | Cisco Systems A9014CFD

Chapter 37 IPv6 over MPLS: 6PE and 6VPE

Feature Overview

Figure 37-1illustrates a 6PE topology.

Figure 37-1	6PE Topology
v6			MP-iBGP sessions	v6
			MP-iBGP sessions
	IPv6			IPv6
v4	6PE			6PE
				v6
	IPv4	P	P	IPv6
			P

		P	P
v6		P		v4
v6				v4
	6PE			6PE
	IPv6			IPv4

65141

v4

IPv4

V6	IPv6 router on the customer	6PE	PE equipment, connected to CEs and entry
	premises		points to the MPLS clouds, running a dual
			stack IPv6/IPv4 (IPv6 to communicate with
			CEs)

V4	IPv4 router on the customer	P	Provider routers, core of the MPLS backbone
	premises		running MPLS and IPv4 stack

IPv6 on VPN Provider Edge Routers

6VPE is a mechanism to use the IPv4 backbone to provide VPN IPv6 services. It takes advantage of operational IPv4 MPLS backbones, eliminating the need for dual-stacking within the MPLS core. This translates to savings in operational costs and addresses the security limitations of the 6PE approach. 6VPE is more like a regular IPv4 MPLS-VPN provider edge, with an addition of IPv6 support within VRF. It provides logically separate routing table entries for VPN member devices.

Components of MPLS-based 6VPE Network

•VPN route target communities – A list of all other members of a VPN community.

•Multiprotocol BGP (MP-BGP) peering of VPN community PE routers – Propagates VRF reachability information to all members of a VPN community.

•MPLS forwarding – Transports all traffic between all VPN community members across a VPN service-provider network.

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
37-4	OL-23826-09

Image 738

Cisco Systems A9014CFD manual IPv6 on VPN Provider Edge Routers, Components of MPLS-based 6VPE Network, 37-4

Contents

Americas Headquarters Text Part Number OL-23826-09 Copyright 2011-2013, Cisco Systems, Inc N T E N T S Iii Related Documents Standards MIBs Standards MIBs Searching and Filtering Output of show and more Commands Split-Horizon8-6 Vii Restrictions Viii Manually Configuring an IP SLA CFM Probe or Jitter Operation Restrictions Overview Setting up Manual Preemption for Vlan Load Balancing Xii Configuring Mpls VPNs Xiii Xiv 19-6 Verifying Local Switching Verifying the Synchronous Ethernet configuration Xvi Cisco IOS IP SLA Xvii Marking Xviii Xix Technical Assistance Configuring Hsrp Xxi Configuring Link Layer Discovery Protocol Xxii How to Configure Bert Xxiii Xxiv 32-2 Configuring IPv6 Duplicate Address Detection Xxv Troubleshooting Tips BFD Xxvii Verifying Layer 2 Tunneling Xxviii Configuring Unspecified Bit Rate Xxix Creating IPv6 VRFs on PE Routers Xxx Technical Assistance Xxxi Finding Feature Information Xxxii Igmp Xxxiii IPv6 Multicast Groups Xxxiv Span Traffic Xxxv Xxxvi About This Guide Document Revision HistoryDocument Number Date Change Summary Xxxviii Xxxix OL-23826-09 Xli Xlii Xliii Xliv Xlv Xlvi Organization ObjectivesAudience Xlvii Mpls OAM Xlviii SLA Xlix Convention Description ConventionsChapter Description Boldface font To access the related documentation on Cisco.com, go to Related DocumentationRelease Notes Lii Cisco ASR 901 Router Overview Introduction FeaturesPerformance Features This section contains the following topics Manageability Features Management Options Security Features Quality of Service and Class of Service Features Layer 3 Features Layer 3 VPN ServicesMonitoring Features OL-23826-09 Finding Feature Information ContentsLicensing Following licenses are supported Feature OverviewLicenses Supported on Cisco ASR 901 Router License Sl.No Chassis PID License PID Description Licensing Licenses Supported on Cisco ASR 901 Router License Features Feature Based LicenseFeatures Supported License Types 1588BC License Port or Interface BehaviorPort Based/Mode License Port Number Port Type Chassis PID License Required Port Based License Example When Port Based License is not InstalledExample When Port Based License is Installed Router# show ip interface brief Routerconfig# interface gig 0/0 10gigUpgrade LicenseExample When 10gigUpgrade License is not Installed Router# show interface Ten0/1 Following is a sample output from the show license command Example When 10gigUpgrade License is InstalledExample When Flexi License is not Installed Flexi License Example When 1588BC License is Installed Example When Flexi License is InstalledExample When 1588BC License is not Installed Following example shows how to install the 1588BC license Removing the 1588BC License Use the license clear command to remove the 1588BC licenseRouterconfig-ptp-clk#no ptp clock boundary domain Router# license clear 1588BC License install license-file-name Installing the LicenseEnable License install Copy tftp flash Show flash Generating the License Command Purpose Changing the LicenseExample Example RMA Process Return Materials Authorization License ProcessRouter# license install ? Router# copy tftp flash Where to Go Next To verify the new license, use the show license command RFCs StandardsMIBs Standard Technical Assistance Description Link Feature Information for Licensing Feature Name Releases Feature Information OL-23826-09 First-Time Configuration Setup ModeBefore Starting Your Router Using Setup Mode Configuring Global Parameters Enter a hostname for the router this example uses Completing the Configuration Configuring the Hostname and Password Password prompt appears. Enter your passwordVerifying the Cisco IOS Software Version Router# configure terminal Verifying the Hostname and PasswordExit back to global configuration mode Router# show config Managing and Monitoring Network Management Features Network Management Features for the ASR This section contains the following procedures Enter your password if prompted Configuring Snmp SupportEnables privileged Exec mode Enters global configuration mode Protocol Form of this command removes the specified community stringString-Community string is the password to access the Snmp View view-name-Optional Previously defined view. The view Envmon voltage shutdown supply fan temperature -When CommandNotification-type -snmp authentication -Enables RFC Temperature Snmp-server host command Command Purpose Enable Configure terminal Configuring Remote Network ManagementExits global configuration mode Interface loopback number Command or Action Purpose Zero-Touch Deployment Image Download Zero-touch Deployment Specifies to exclude IP address of the Dhcp server Configuring a Dhcp ServerNetwork ip-address subnet-mask Ip dhcp Configuring a Tftp Server Creating a Bootstrap Configuration Configuring the Cisco Configuration Engine Enabling a Tftp Server on the Edge Router Example Configuring Remote Network Management Configuration ExamplesExample Configuring Snmp Support Example Configuring a Dhcp Server Related Documents Additional ReferencesExample Zero-touch Deployment Related Topic Document Title MIBs Network Management Features for the ASR Using the Command-Line Interface Understanding Command Modes Exit, or logout Entered. Use a passwordUser Exec Log Use the interface Ctrl-Z or enter end Understanding the Help SystemLine console Help Understanding CLI Error Messages Understanding Abbreviated CommandsUnderstanding no and default Forms of Commands Router# show conf Error Message Meaning How to Get Help Using Command HistoryChanging the Command History Buffer Size Range is from 0 to Disabling the Command History Feature Using Editing FeaturesRecalling Commands Enabling and Disabling Editing Features Press Ctrl-Y Editing Commands through KeystrokesCapability Keystroke1 Purpose Backspace key Return and Space bar Editing Command Lines that WrapPress Ctrl-V or Esc Q Press Ctrl-L or Ctrl-R Accessing the CLI Command begin include exclude regular-expressionRouter# show interfaces include protocol Saving Configuration Changes Software Upgrade Selecting a Cisco IOS ImageUpgrading the Cisco IOS image Copy the IOS Image from the Tftp server If the right steps are not followed properlyRouter# show file system Verify the Cisco IOS image in the file system Save the configuration and reload the routerVerify the Cisco IOS upgrade Router# verify flashasr901-universalk9-mz.151-2.SNG Auto Upgrading the MCU Router# show version Manually Upgrading the Rommon Auto Upgrade of Rommon Rommon AUTOUPGRADEROMMON=TRUE FalseRouter# upgrade rom-monitor internal To configure the GE interface, complete the following steps Configuring Gigabit Ethernet InterfacesConfiguring the Interface Enters enable mode Setting the Speed and Duplex Mode Cdp enableGigabitethernet 0/1 Enabling the Interface Modifying MTU Size on the InterfaceMtu bytes No mtu or default mtu command Verifying the MTU Size MAC Flap Control Configuring MAC FLap ControlComplete the following steps to configure MAC Flap control Restrictions and Limitations Mac-flap-ctrl on per-mac mac-movement Configuring a Combo PortRestrictions Time-interval Auto-select-Specifies dynamic selection Configures the media typeExits interface configuration mode and enters Physical connection Verifying the Media Type Router# show interface gigabitethernet 0/1Router# show interface gigabitethernet 0/7 Configuring Ethernet Virtual Connections Supported EVC Features Understanding EVC Features Service Instances and EFPsEthernet Virtual Connections Encapsulation Configures default encapsulation Bridge DomainsTo the appropriate EFP Dhcp Client on Switch Virtual Interface Split-HorizonRewrite Operations Configuring EFPs Default EVC ConfigurationConfiguration Guidelines Creating Service Instances Show ethernet service instance Service instance number ethernet nameDefault Copy running-config startup-config Example Encapsulation Using a Vlan Range Configuration Examples of Supported FeaturesExample Configuring a Service Instance Example Bridge Domains and Vlan Encapsulation Example Rewrite Router config-if-srv#rewrite ingress tag pop 1 symmetricRouter config-if-srv#rewrite ingress pop 1 symmetric Example Split Horizon Configuration Examples of Unsupported Features Example FilteringExample Overlapping Encapsulation How to Configure EVC Default Encapsulation Configuring EVC Default Encapsulation with Bridge-DomainInterface type number Configuring EVC Default Encapsulation with Xconnect Configures the default service instanceAn identifier Verifying EVC Default Encapsulation with Bridge-Domain Configuration Examples for EVC Default Encapsulation Configuring Other Features on EFPsVerifying EVC Default Encapsulation with Xconnect Example Configuring EVC Default Encapsulation with Xconnect EFPs and EtherChannels MAC Address Forwarding, Learning and Aging on EFPs No mac-address-table learning vlan vlan-id Interface type slot/port Addresses learned on a particular VLAN/BD End Return to privileged Exec modeRouterconfig# no mac-address-table learning vlan Router# show mac-address-table Router# show mac-address-table interface 0/9 Configuring Ieee 802.1Q Tunneling using EFPs802.1Q Tunneling QinQ Router# show mac-address-table interface port-channel 1shows the tag structures of the double-tagged packets Configuration Examples You can use EFPs to configure 802.1Q tunneling in two ways Configuration Example Cisco ASR 901 router supports pop 2 configurationRouted QinQ Example Configuring Bridge-Domain Routing Bridge Domain Routing Configures the Vlan interface and enters interface How to Configure Dhcp Client on SVIConfiguring Dhcp Client on SVI Interface type-number Configuration Example for Dhcp Client on SVI Verifying Dhcp Client on SVI EFPs and Switchport MAC Addresses EFPs and Mstp Command Description Monitoring EVC Sample Configuration with Switchport to EVC Mapping Configuration Example Line vty 0 4 login Additional References Supported EVC Features OL-23826-09 Configuring EtherChannels EtherChannel Feature OverviewUnderstanding How EtherChannels Work Understanding Manual EtherChannel Configuration Understanding How EtherChannels Are ConfiguredEtherChannel Configuration Overview Understanding Ieee 802.3ad Lacp EtherChannel Configuration Active mode Passive mode Passive modePassive mode Active mode Router a Router B Result EtherChannel Configuration Guidelines and Restrictions Understanding Port-Channel InterfacesUnderstanding Load Balancing Configuring Etherchannels Configuring Channel Groups Configuring the Lacp System Priority and System ID Configuration examples for Lacp system priority Configuring the Lacp Transmit Rate Lacp rate fast normal End Configuring EtherChannel Load Balancing Configuration ExamplesVerifying the Lacp Transmit Rate Enable Configure terminal Interface port-channel number Modifying MTU Size on Port-ChannelVerifying the MTU Size on Port-Channel EVC On Port-Channel Restrictions for EVC EtherChannel Router# show ethernet service evc id evc-idinterface Configuring EVC on Port-ChannelVerifying the Configuration Router# show ethernet service instance interface Troubleshooting Problem Solution Configuring Ethernet OAM Contents IP SLA Support for CFM Configuring Ethernet CFMUnderstanding Ethernet CFM 10-2 Configuring the CFM Domain Default Ethernet CFM ConfigurationEthernet CFM Configuration Restrictions and Guidelines Configure terminal Enter global configuration mode 10-4 Is 2 to 255 the default is Second, 10 seconds, 1 minute and 10 minutes. The defaultWe do not recommend configuring a large number Optional Configure the maximum number of MEPs Example for Basic CFM configuration 10-6 Exit Configuring Multi-UNI CFM MEPs in the Same VPNRestrictions 10-7 Cfm mep domain domain-name mpid identifier 10-8 Alias alias-short-ma-name icc icc-code meg-id Number ma-number vlan-id vlan-id vpn-id vpn-id10-9 10-10 10-11 Configuring Ethernet CFM Crosscheck 10-12 Static Configuring Static Remote MEPContinuity-check static rmep 10-13 Configuring a Port MEP Service ma-name ma-number vpn-id port10-14 Configuring Snmp Traps 10-15 Ethernet jitter mpid identifier domain domain-name Configuring IP SLA CFM OperationEthernet echo mpid identifier domain domain-name 10-16 Seconds to keep the operation in memory when it is not Repeats. The range is from 1 to 604800 seconds the defaultAllowed by the protocol being used the default is 66 bytes Seconds. The default is 0 seconds 10-18 Configuring CFM over EFP with Cross Connect Show the configured IP SLA operation10-19 Configuring CFM over EFP Interface with Cross Connect 10-20 Example for untagged Encapsulation 10-21 Example for single tag Encapsulation 10-22 10-23 Configuring CFM with EVC Default Encapsulation Cfm mep domain domain-name mpid mpid-value10-24 Verifying CFM with EVC Default Encapsulation 10-25 Default Y.1731 Configuration Configuring Y.1731 Fault ManagementExample Configuring CFM with EVC Default Encapsulation 10-26 Configuring ETH-AIS 10-27 Show ethernet cfm smep interface interface-id Configuring ETH-LCKShow ethernet cfm error Ethernet cfm lck link-status global 10-29 Managing and Displaying Ethernet CFM Information 10-31 Understanding the Ethernet OAM Protocol 10-32 Benefits of Ethernet OAM OAM FeaturesFollowing OAM features are defined by Ieee 802.3ah 10-33 Link Monitoring 10-34 Setting Up and Configuring Ethernet OAM This section includes the following topics10-35 Enabling Ethernet OAM on an Interface Default Ethernet OAM ConfigurationRestrictions and Guidelines Ethernet oam Show ethernet oam status interface interface-id Ms mode active passive timeout secondsEthernet oam max-rate oampdus min-rate seconds 10-37 Configuring Ethernet OAM Link Monitoring Enabling Ethernet OAM Remote Loopback10-38 10-39 Ethernet oam link-monitor frame-seconds Ethernet oam link-monitor frame-periodThreshold high high-frames none low 10-40 No ethernet link-monitor on Configuring Ethernet OAM Remote Failure IndicationsEthernet oam link-monitor receive-crc threshold 10-41 Error-disable-interface Configuring Ethernet OAM TemplatesDying-gasp link-fault action Ethernet oam remote-failure critical-event 10-43 Ethernet oam link-monitor high threshold action Threshold high high-seconds none lowLow-seconds window milliseconds Source-template template-name Show ethernet oam statistics interface interface-id Displaying Ethernet OAM Protocol InformationShow ethernet oam discovery interface interface-id Show ethernet oam summary Verifying an OAM Session Verifying Ethernet OAM ConfigurationVerifying Information Oampdu and Fault Statistics Verifying OAM Discovery Status Verifying Link Monitoring Configuration and Status 10-47 10-48 Understanding E-LMIVerifying Status of the Remote OAM Client Active Restrictions Configuring E-LMIDefault E-LMI Configuration 10-49 Enabling E-LMI 10-50 Displaying E-LMI Information Configuring Ethernet LoopbackUnderstanding Ethernet Loopback 10-51 Enabling Ethernet Loopback 10-52 10-53 10-54 10-55 Configuring Y.1564 to Generate Ethernet Traffic 10-56 Internal Mode 10-57 Specify the SLA ID to start the IP SLA session Configuring IP SLA for Traffic GenerationRouterconfig# ip sla 10-58 Measurement-type direction -Specifies the statistics 10-59 10-60 Example Two-Way Measurement 10-61 10-62 ITU-T Y.1731 Performance Monitoring Prerequisites for ITU-T Y.1731 Performance Monitoring11-1 Restrictions for ITU-T Y.1731 Performance Monitoring Information About ITU-T Y.1731 Performance Monitoring11-2 Frame Delay and Frame-Delay Variation Two-way Delay Measurement11-3 Single-ended ETH-SLM Frame Loss RatioOn-Demand and Concurrent Operations 11-4 Supported interfaces How to Configure ITU-T Y.1731 Performance MonitoringBenefits of ITU-T Y.1731 Performance Monitoring 11-5 Configuring Two-Way Delay Measurement Max-delaymilliseconds Owner owner-id11-6 Mac-address target-address -Specifies Mac-address source-address -Specifies11-7 Boundary ,...,boundary -Lists upper 11-8 Configuring Single-Ended Synthetic Loss Measurement Enable Configure terminal Asr901-platf-multi-nni-cfm11-9 11-10 Mac-addresstarget-address-Specifies Mac-addresssource-address-Specifies11-11 Exits IP SLA configuration mode and enters global Exits IP SLA Y.1731 loss configuration modeEnters IP SLA configuration mode Owner-id-Specified the name of the Snmp Number-of-measurements argument. The range is Threshold-type averageNumber-of-measurements -Optional When Threshold-type consecutive Prerequisites Threshold-type immediate -Optional When aScheduling IP SLAs Operations Threshold-value upper-threshold Range of operation numbers to be scheduled for a Individual IP SLAs operationSpecifies an IP SLAs operation group number Multi-operation scheduler Router# show ip sla configuration 11-16Router-1#show running interface gigabitethernet0/0 Router# show ethernet cfm pm session summary Example Verifying Ethernet CFM Performance Monitoring11-17 Router# show ethernet cfm pm session detail Example Verifying History for IP SLAs Operations 11-18Router# show ip sla history interval-statistics Configuring Direct On-Demand Operation on a Sender MEP 11-19 Configuring Referenced On-Demand Operation on a Sender MEP 11-20 Example On-Demand Operation in Direct Mode 11-21 Example On-Demand Operation in Referenced Mode 11-22Router# ip sla on-demand ethernet slm 2002 duration Following URL Releases, and feature sets, use Cisco MIB Locator found atIeee 802.1ag ITU-T Y.1731 MEF 11-23 11-24 Feature Name Releases Feature Information 11-25 11-26 Overview Configuring Resilient Ethernet ProtocolUnderstanding Resilient Ethernet Protocol REP 12-1 12-2 REP Open Segments 12-3 No-neighbor Topology Vlan Load Balancing VLB Link IntegrityFast Convergence 12-4 12-5 Neighbor Offset Numbers in a Segment REP Ports 12-6 REP Configuration Guidelines Configuring Resilient Ethernet Protocol REPDefault REP Configuration 12-7 12-8 Configuring the REP Administrative Vlan 12-9 Configuring REP Interfaces 12-10 Enter the physical Layer 2 interface or port channel ID. Routerconfig# interface Gigabitethernet0/1Service instance instance-id Port-channel range is 1 to 12-12 12-13 Verifies the REP interface configuration File12-14 Configuring REP as Dual Edge No-Neighbor Port 12-15 12-16 Rep segment segment-id edge no-neighbor Primary preferred12-17 Cisco ASR 901 Dual Rep Edge No-Neighbor Topology Example 7600112-18 76002 12-19 Setting up Manual Preemption for Vlan Load Balancing 12-20 Configuring Snmp Traps for REP 12-21 Trap-rate command Monitoring REP12-22 12-23 Configuring a REP Interface Example Configuration Examples for REPConfiguring the REP Administrative Vlan Example This section contains the following examples Monitoring the REP Configuration Example Setting up the Preemption for Vlan Load Balancing ExampleConfiguring Snmp Traps for REP Example 12-25 Cisco ASR 901 Topology Example 12-26 ASR2 12-27 12-28 12-29 12-30 Configuring MST on EVC Bridge Domain Overview of MST and STP13-1 Overview of MST on EVC Bridge Domain Restrictions and Guidelines13-2 13-3 MST0 Configuring MST on EVC Bridge Domain 13-4 Specifies the gigabit ethernet interface to configure Slot/port-Specifies the location of the interface13-5 Configuration Example for MST on EVC Bridge Domain Verification13-6 13-7 Router# show spanning-tree vlan This example shows MST on port channels 13-8Router# show spanning-tree mst Troubleshooting Tips 13-9 13-10 Configuring Multiprotocol Label Switching 14-1 14-2 Configuring EoMPLS Understanding EoMPLS15-1 Configuring EoMPLS 15-2 EoMPLS Configuration Example 15-3 Specifies an interface to configure Configuring Pseudowire RedundancyConfiguration Commands Configures encapsulation type for the service instance Show mpls l2t vc id Configure terminal Enters global configuration mode ExamplePort Based EoMPLS 15-5 Routerconfig# xconnect Encapsulation mpls 15-6 Configuring Mpls VPNs Understanding Mpls VPNs16-1 PE1 Configuration Configuring Mpls VPNsConfiguration Examples for Mpls VPN 16-2 Configuring Mpls VPNs Configuration Examples for Mpls VPN 16-3 16-4 Provider Configuration 16-5 PE2 Configuration Interface details16-6 Ospf and BGP details 16-7 Loop Back details 16-8 16-9 16-10 LSP Ping Configuring Mpls OAMUnderstanding Mpls OAM 17-1 LSP Traceroute Configuring Mpls OAMLSP Ping over Pseudowire 17-2 Using LSP Ping for Pseudowire Using LSP Ping for LDP IPv4 FECUsing LSP Traceroute for LDP IPv4 FEC Ping mpls ipv4 Show mpls l2transport binding vcid Using LSP Traceroute over PseudowireDisplaying AToM Vccv capabilities Vc-id-value Asr901-ecmp-hash-config global-type Configuring Routing ProtocolsChanging Default Hashing Algorithm for Ecmp 18-1 18-2 Configuring BFD Understanding BFD19-1 Configuring BFD for Ospf on One of More Interfaces BFD Configuration Guidelines and RestrictionsConfiguring BFD for Ospf Enables BFD for Ospf on the interface Specifies the BFD session parameters Configuring BFD for Ospf on All InterfacesCreates a configuration for an Ospf process Process Configuring BFD for IS-IS on a Single Interface Configuring BFD for BGPConfiguring BFD for IS-IS 19-4 Configuring BFD for IS-IS for All Interfaces 19-5 Configuring BFD for Static Routes 19-6 BFD with Ospf on Individual Interfaces Configuration Examples for BFDBFD with Ospf on All Interfaces 19-7 BFD with IS-IS on Individual Interfaces BFD with BGPBFD with IS-IS on All Interfaces 19-8 BFD with Static Routes 19-9 19-10 Configuring T1/E1 Controllers Configuring the Card Type20-1 Configuring E1 Controllers Subslot20-2 Channel-group channel-no timeslots timeslot-list 64 command 20-3 Configuring T1 Controllers 20-4 Troubleshooting Controllers Troubleshooting E1 Controllers20-5 Receiver Troubleshooting T1 ControllersPayload loopback mode of the framer. The framer re-clocks Incoming traffic Path to the receiver path 20-7Local line 20-8 Configuring Pseudowire 21-1 Understanding Pseudowires Structure-Agnostic TDM over Packet21-2 Limitations Hot Standby Pseudowire Support for ATM/IMATransportation of Service Using Ethernet over Mpls 21-3 Xconnect ip pw-class pseudowire-class Configuring PseudowireConfiguring Pseudowire Classes Cem group-number 21-5 Cem group-number Cem class cem-class-name Configuring CEM ClassesClass cem cem-class-name Xconnect ip-addressencapsulation mpls 21-7 Specifies the CEM class name Configuring a Backup PeerEnable Configure terminal Interface cemslot/port Xconnect peer-loopback-ip-addressencapsulation mpls Configuring Structure-Agnostic TDM over Packet Xconnect ip-addressencapsulation mpls Exit21-9 30.30.30.2 255.255.255.255 21-10 Xconnect peer-router-id vcid pseudowire-class name Configuring a SAToP Pseudowire with UDP EncapsulationPseudowire-classpseudowire-class-name Udp port local-udp-port remote remote-udp-port 21-12 Remote peer Values for SAToP pseudowires using UDP are fromExits the configuration mode Exits the CEM interface Exit Interface CEMslot/port Enable Configure terminal Controller e1 t1 slot/portCem-groupgroup-number timeslots timeslot Xconnect ip-addressencapsulation mpls Exit End Defines a CEM channel Configuring a CESoPSN Pseudowire with UDP EncapsulationExits configuration mode Recommend that you build a route from the xconnect address Exits pseudowire-class configuration mode Udp port local localudpport remote remoteudpport21-16 21-17 QoS for CESoPSN over UDP and SAToP over UDP 21-18 21-19 Service instance instance-numberAlthough the symmetric keyword appears to be optional, you Xconnect ip-addressencapsulation Creates a CEM interface and assigns it a CEM group number Configuring L2VPN Pseudowire RedundancySelects an E1 or T1 controller 21-20 21-21 Backup peer peer-router-ip-addr vcid Configuring ATM/IMA Pseudowire Redundancy in PVC ModeExample Pseudowire Redundancy Interface interface-name 21-23 Vpi-ATM network virtual path identifier VPI of the VC to Configuring ATM/IMA Pseudowire Redundancy in PVP ModeOr more virtual circuits VCs Multiplex on the permanent virtual path Configuring ATM/IMA Pseudowire Redundancy in Port Mode Transport over Mpls AToM static pseudowire21-25 21-26 Verifying Hot Standby Pseudowire Support for ATM/IMAPeer-router-ip-addr-IP address of the remote peer router Router# show mpls l2transport vc TDM Local Switching 21-27 Configuring TDM Local Switching on a T1/E1 Mode 21-28 Configuration Example for Local Switching Verifying Local Switching21-29 ATM/IMA 21-30 Configuration Examples for Pseudowire Example TDM over Mpls Configuration-Example21-31 21-32 Asrb 21-33 Following configuration uses CESoSPN with UDP encapsulation Example CESoPSN with UDP21-34 Example Ethernet over Mpls 21-35 21-36 Feature Information for Configuring Pseudowire 21-37 21-38 Configuring Clocking Restrictions22-1 Configuring Network Clock for Cisco ASR 901 Router 22-2 Configuring Network Clock in Global Configuration Mode 22-3 22-4 Example for GPS interface 22-5 Configuring Network Clock in Interface Configuration Mode 22-6 Ethernet Synchronization Messaging Channel Understanding SSM and EsmcSynchronization Status Message Clock Selection Algorithm Esmc behavior for Port Channels Configuring Esmc in Global Configuration ModeQL-disabled mode Esmc behavior for STP Blocked Ports Configuring Esmc in Interface Configuration Mode 22-9 Verifying Esmc Configuration Show esmc22-10 22-11 Managing SynchronizationShow network-clock synchronization Router#show esmc interface gigabitEthernet 0/10 Synchronization Example 22-12 Configures synchronous ethernet copper port as slave Configuring Synchronous Ethernet for Copper PortsVerifying the Synchronous Ethernet configuration Configures synchronous ethernet copper port as master 22-14 22-15 Shown in this example Troubleshooting TipsSynchronization detail RP command to confirm 22-16 Troubleshooting Esmc Configuration 22-17 Configuring PTP for the Cisco ASR 901 Router 22-18 Configuring Master Ordinary Clock Setting System Time to Current TimeConfiguring PTP Ordinary Clock 22-19 Priority1 priority-value Priority2 priority-value 22-20 Configuring Slave Ordinary Clock 22-21 Clock source source-address 22-22 22-23 22-24 Port Name Configuring PTP in Unicast ModeConfiguring PTP in Unicast Negotiation Mode Port Role PTP Boundary Clock Configures Cisco ASR 901 router on unicastConfigured with this command Negotiation mode. The following options can be Configuring PTP Boundary Clock Clock-port port-namemaster22-27 22-28 Ordinary Clock Exits clock port configuration modeVerifying PTP modes 22-29 22-30 Router# show ptp clock dataset defaultBoundary Clock Router# show ptp clock dataset time-properties domain Verifying PTP Configuration on the 1588V2 Slave 22-31Router# show ptp clock runn dom 22-32 Verifying PTP Configuration on the 1588V2 MasterTypical configuration on a 1588V2 master is Router# show ptp clock running domain 22-33 Configuring a Hybrid Ordinary Clock PTP Hybrid Clock22-34 That the output of the clock is transmitted to the remote Hybrid-Optional Enables the PTP boundary clockTo work in hybrid mode. Enables the hybrid clock such Slaves 22-36 Configuring a Hybrid Boundary Clock 22-37 Router# show running-config section ptp Verifying Hybrid modes22-38 SSM and PTP Interaction 22-39Router#show platform ptp channelstatus Telecom Profiles ClockClass MappingPTP Redundancy 22-40 End Configuring Telecom Profile in Slave Ordinary ClockClock source source-address priority 22-41 22-42 Configuring Telecom Profile in Master Ordinary Clock 22-43 22-44 Verifying Telecom profileTiming packets with a PTP slave devices Router#show ptp port running detail 22-45 Router#show ptp clock running domain ASR901 Negotiation Mechanism Setting the TimePropertiesStatic Unicast Mode 22-46 Configuring ToD on 1588V2 Slave 22-47 22-48 Configuring Ipsla Path Discovery Cisco IOS IP SLA23-1 Configuration Parameters 23-2 Example for Ipsla Path Discovery 23-3 This example shows the LPD parameter values configured 23-4Router#show ip sla mpls-lsp-monitor neighbors Two-Way Active Measurement Protocol 23-5 Configuring Twamp 23-6 Port port-number Configuring the Twamp ServerEnable Configure terminal Ip sla server twamp 23-7 Configures the switch as a Twamp responder, and enter Twamp Configuring the Twamp ReflectorConfiguration Examples for Twamp 23-8 Routerconfig# ip sla server twamp Example Configuring the Router as an IP SLA Twamp serverExample Configuring the Router as an IP SLA Twamp Reflector Routerconfig# ip sla responder twamp 23-10 Configuring QoS 24-1 Understanding QoS 24-2 Default QoS for Traffic from External Ethernet Ports Default QoS for Traffic from Internal Ports24-3 Modular QoS CLI 24-4 Input and Output Policies Input Policy Maps24-5 Access Control Lists Output Policy Maps24-6 Classification 24-7 Match Command Class Maps24-8 Classification Based on IP Dscp Classification Based on Layer 2 CoSClassification Based on IP Precedence 24-9 Per-hop Decimal Precedence CoS Classification ComparisonsThis display shows the available classification options 24-10 Classification Based on QoS Groups Traffic Type Per-hop Decimal Precedence CoS24-11 Classification Based on Vlan IDs 24-12 Table Maps 24-13 Policing 24-14 Individual Policing Gigabitethernet port24-15 Unconditional Priority Policing 24-16 Egress Policing Configuration ExampleRouterconfig# policy-map policy1 24-17 Routerconfig# policy-map Example Marking24-18 Congestion Management and Scheduling Traffic Shaping24-19 Routerconfig-pmap-c#service-policy out-policy Routerconfig# policy-map out-policyRouterconfig# policy-map out-policy-parent 24-20 Routerconfig# policy-map parent Class-Based Weighted Fair QueuingThis is an example of a parent-child configuration 24-21 Routerconfig-pmap-c#bandwidth remaining percent 24-22 Priority Queuing 24-23 Ingress QoS Functions Routerconfig# policy-map pmapbckboneIngress and Egress QoS Functions 24-24 Egress QoS Functions Configuring Quality of Service QoSQoS Limitations 24-25 General QoS Limitations Statistics Limitations24-26 GigabitEthernet Propagation LimitationsClassification Limitations Value Marking Limitations 24-28 Queuing Limitations Congestion Management LimitationsPrecedence Prec-transmit Qos-group Rate Limiting Limitations Shaping Limitations ACL-based QoS RestrictionsPolicing with 24-30 Tcam with QoS Improving Feature ScalabilityQoS for MPLS/IP over Mlppp QoS for CPU Generated Traffic QoS Configuration Guidelines 24-32 Sample QoS Configuration 24-33 Creating a Class Map for Classifying Network Traffic Configuring ClassificationEnter the password 24-34 24-35 Attaching the Policy Map to an Interface 24-36 Attaching Policy Map to Cross Connect EVC 24-37 Configuring Marking 24-38 Creating a Class Map for Marking Network Traffic 24-39 Set dscp Traffic Attributes Network Layer ProtocolSet cos Set qos-group Specify an encapsulation type for the EVC Configuring Mpls Exp Bit Marking using a PseudowireSpecify an EVC 24-41 Use the policy-mapcommand to define a policy map Configuring Congestion ManagementConfiguring Low Latency Queueing LLQ 24-42 Configuring Multiple Priority Queueing Policy-map interface commands to verify your configuration24-43 24-44 Use the exit command to exit the policy map configuration Configuring Class-Based Weighted Fair Queuing CbfqUse the exit command to exit class map configuration 24-45 This step is optional Weighted Random Early Detection WredAmount of bandwidth 24-46 No random-detect discard-class value Configuring ShapingNo random-detect discard-class-based 24-47 Configuring the Secondary-Level Child Policy Map 24-48 Configuring Ethernet Trusted Mode Creating IP Extended ACLs24-49 Class-map-name Using Class Maps to Define a Traffic ClassClass-map match-all match-any 24-50 Qos-group value vlan vlan-list Match cos cos-list ip dscp dscp-listIp precedence ip-precedence-list Show class-map Permit source source-wildcard any log Creating a Named Access ListMatch access-group name access-group-name Class-mapclass-map-name What to do Next 24-53 24-54 Router# show ip access-lists tcam1Tcam with ACL Router# show run int gig 0/1 24-55 Verifying Named Access ListRouter# show access-lists tes456 Router# show policy-map interface gigabitethernet 0/0 Configuration Example for Named Access List Router# show running-config24-56 24-57 Class-map match-any test 24-58 24-59 24-60 24-61 QoS Treatment for IP-SLA Probes QoS Treatment for Performance-Monitoring ProtocolsCisco IP-SLAs QoS Marking for CPU-Generated Traffic QoS Queuing for CPU-Generated Traffic 24-63 Extending QoS for Mlppp Configuring Class-map for Matching Mpls EXP BitsTo enter QoS class-map configuration mode Class in the policy map Configuring Class-map for Matching IP Dscp Value Match ip dscp dscp-value...dscp-value24-65 24-66 This configuration packets with IP Dscp of value af11 areDscp-value-The Dscp value used to identify a Dscp value Match ip dscp Configuring a Policy-map 24-67 Exampleclass Class class-defaultBandwidth percent bandwidth-percent Exit 24-68 Dscp-value-The Dscp value used to identify a Dscp Value in the type of service ToS byteBits defined by the policy map 24-69 Ip address address subnet mask Enable Configure terminal Interface multilink group-numberAttaching the Policy-map to Mlppp Interface 24-70 24-71 Re-marking IP Dscp Values of CPU Generated Traffic 24-72 Are 0 to Re-marking Mpls EXP Values of CPU Generated TrafficGenerated traffic 24-73 Bandwidth percent bandwidth-percent Set ip dscp dscp-value Configuring a Policy-map to Match on CS5 and EXP4Class and enters QoS class-map configuration mode Class-map-name-The name used for class map Cs-value-The Class SelectorCS value Value in the type of service ToS byteAs a match criterion Class-map-name-Name of the class for the class map Configuring Class-map for Matching Mpls EXP Bits Exits QoS policy-map class configuration mode24-76 Following example shows a configuration of a policy-map Configuring Class-map for Matching IP Dscp ValueConfiguring a Policy-map 24-77 Configuring a Policy-map to Match on CS5 and EXP Attaching the Policy-map to Mlppp Interface24-78 Verifying Mpls over Mlppp Configuration 24-79 24-80 Troubleshooting Tips 24-81 24-82 Example Tcam troubleshooting related error 24-83 Routerconfig-if-srv#service-policy input policy2 24-84Entries used 256/256 no free entries available Entries used 195/256 after unconfiguring policy1 We now have enough free entries to configure policy2Routerconfig-if-srv#no service-policy input policy1 24-85 Entries used 220/256 after configuring policy2 24-86 Related Topic Document Title 24-87 Feature Information for Configuring QoS 24-88 Configuring Mlppp 25-1 Distributed Multilink Point-to-Point Protocol Offload Mlppp Optimization FeaturesPrerequisites Mpls label protocol ldp Multiclass Mlppp Mpls over Mlppp25-3 Mpls Label imposition LER Mpls Label switching LSR 25-4 Mpls over Mlppp on Core Links Mpls over Mlppp on CE to PE Links25-5 Configuring a Multilink Backhaul Interface Configuring Mlppp BackhaulConfiguring the Card Type, E1 and T1 Controllers Creating a Multilink Bundle Example creates a multilink bundle Configuring MrruExample configures an IP address and subnet mask 25-7 Configuring PFC and Acfc Remote apply, pfc local request, and pfc remote apply25-8 25-9 Acfc option are not accepted Configuration requestsRequests. The syntax is as follows 25-10 Enabling Multilink and Identifying the Multilink Interface Keepalive period retries25-11 Ppp multilink group group-number 25-12 Mlppp Offload Ppp multilink idle-link Ppp multilink queue depth25-13 Ppp multilink Ppp multilink group group-number Exit Configuring Mpls over the Mlppp on a Serial InterfaceConfiguring Additional Mlppp Settings 25-14 25-15 25-16 Configuring Mpls over Mlppp for OspfNumber, and enters the interface configuration mode Interface multilink group-number 25-17 Configuration Examples for Mpls over Mlppp 25-18 Router# ping mpls ipv4 6.6.6.6/32 Verifying Mpls over Mlppp Configuration25-19 Router# show mpls ldp bindings 6.6.6.6 25-20 25-21 Feature Information for Mlppp 25-22 Retrieval of the Obfl message Onboard Failure LoggingUnderstanding Obfl Recording Obfl Messages Configuring Obfl Verifying Obfl Configuration26-2 26-3 Clilog summary 26-4 27-1 Overview of Hsrp and Vrrp Text AuthenticationInformation About Hsrp and Vrrp Preemption Complete the following steps to configure Hsrp How to Configure HsrpConfiguring Hsrp Standby group-numberauthentication text string 27-4 Example Configuring Hsrp Backup Router Configuration Examples for HsrpExample Configuring Hsrp Active Router 27-5 Configuring Vrrp How to Configure VrrpExample Hsrp Text Authentication Interface type number Ip ip-address mask Vrrp group-numberauthentication text string Vrrp group-numberpriority level27-7 Example Configuring a Vrrp Backup Router Configuration Examples for VrrpExample Configuring a Vrrp Master Router 27-8 Example Vrrp Text Authentication 27-9 27-10 Feature Information for Hsrp and Vrrp 27-11 27-12 Configuring Link Layer Discovery Protocol 28-1 Restrictions for Lldp How to Configure LldpConfiguring Lldp Overview of Lldp 28-3 Verifying Lldp Configuration Example for LldpExample Configuring Hold Time Example Enabling Lldp Globally Example Configuring Delay Time Example Configuring Intervals28-5 28-6 28-7 Feature Information for Lldp 28-8 Configuring Multihop Bidirectional Forwarding Detection 29-1 Restrictions for Multihop BFD How to Configure Multihop BFDConfiguring Multihop BFD Template Information About Multihop BFD 29-3 Example Configuring Multihop BFD Configuration Examples for Multihop BFDConfiguring a Multihop BFD Map Configuration for Router a Interface Fast Ethernet 0/1 Configuration for Router B29-5 Interface Fast Ethernet 6/0 29-6 Feature Information for Multihop BFD 29-7 29-8 Bit Error Rate Testing Prerequisites30-1 How to Configure Bert Bert Pattern Description30-2 Terminating Bert on a T1/E1 Controller Enable Configure terminal Controller t1 e1 slot/portPerforming Bert on a T1/E1 Line 30-3 No bert pattern pattern interval time Routerconfig-controller# no bert patternVerifying Bert on a T1/E1 Controller 30-4 Following is a sample configuration of the Bert feature 30-5 Feature Information for Bit Error Rate Testing 30-6 30-7 30-8 Microwave ACM Signaling and EEM Integration 31-1 31-2 Benefits QoS Policy AdjustmentIGP Metric Adjustment Link Removal Configuring Connectivity Fault Management Bridge-domainbridge-domain-id31-4 31-5 31-6 Configuring EEP Applet Using CLIs 31-7 31-8 An EEM applet is triggered Configuring Event HandlerExits applet configuration mode 31-9 31-10 Following is a sample configuration of CFM Example Configuring CFMExample Configuring EEP Applet 31-11 31-12 Action 104 set n $ringnodes 31-13 Action 442 cli command isis metric $dlc 31-14 Example Configuring Event Handler Following is a sample configuration of Event Handler31-15 Bandwidth Transport Integration with Microwave ACM Cisco ASR 901 Router CommandsCFM Support for Microwave Adaptive 31-16 31-17 31-18 IPv6 Support on the Cisco ASR 901 Router 32-1 Prerequisites for IPv6 Support on the Cisco ASR 901 Router 32-2 IPv6 Address Formats BenefitsOverview of IPv6 32-3 IPv6 Address Type Preferred Format Compressed Format Static ConfigurationIPv6 Addressing and Discovery 32-4 Stateless Autoconfiguration ICMPv632-5 IPv4 and IPv6 Dual-Stack on an Interface IPv6 Duplicate Address DetectionIPv6 Neighbor Discovery 32-6 IS-IS Enhancements for IPv6 Routing ProtocolsBidirectional Forwarding Detection for IPv6 OSPFv3 for IPv6 Configuring IPv6 Addressing and Enabling IPv6 Routing QoS for IPv632-8 32-9 Enables the forwarding of IPv6 unicast datagrams Configuring a Static IPv6 RouteGlobal configuration mode Enables Cisco Express Forwarding CEF globally on Ipv6 address autoconfig Enabling Stateless Auto-ConfigurationAdministrative-multicast-distance -Optional 32-11 Ipv6 enable or Implementing IPv6 on Vlan Interfaces32-12 Implementing IPv6 Addressing on Loopback Interfaces 32-13 Configuring ICMPv6 Rate Limiting Enable Configure terminal Ipv6 icmp error-interval interval32-14 Configuring IPv6 Duplicate Address Detection Ipv6 nd dad attempts value32-15 Configuring IPv6 Neighbor Discovery 32-16 Configuring IPv6 and IPv4 Dual-Stack on the Same Vlan 32-17 Configures IPv6 address on the interface Configuring OSPFv3 for IPv6Configures an IPv4 address on the interface Enables IPv6 address on the interface Net network-entity-tag Configuring IS-IS for IPv6Enable Configure terminal Router isis area-tag Ipv6 router isis area-name 32-20 Configuring Multiprotocol-BGP for IPv6 32-21 Configuring BFD for IPv6 Specifying a Static BFDv6 Neighbor32-22 Associating an IPv6 Static Route with a BFDv6 Neighbor Interface-number -SVI name32-23 32-24 Configuring BFDv6 and OSPFv3 32-25 Configuring BFDv6 for BGP 32-26 Implementing QoS for IPv6 Exits global configuration mode and enters privilegedExec mode Verifying IPv6 Addressing Routing Verifying a Static IPv6 Route 32-28Router# show ipv6 route 32-29 Verifying a Stateless Auto-ConfigurationVerifying IPv6 Implementation on Vlan Interfaces Router# show ipv6 interface loopback 32-30 Verifying ICMPv6 ConfigurationVerifying IPv6 Implementation on Loopback Interfaces Router# show ipv6 interface loopback0 32-31 Router# show ipv6 traffic Verifying IPv6 Duplicate Address Detection Configuration 32-32 32-33 Verifying IPv6 Neighbor Discovery ConfigurationVerifying IPv6 and IPv4 Dual-Stack Configuration Router# show ipv6 neighbors detail 32-34 Verifying OSPFv3 for IPv6 ConfigurationAs shown in the example Router# show ipv6 ospf 32-35 Verifying IS-IS for IPv6 ConfigurationVerifying Multiprotocol-BGP for IPv6 Configuration Router# show isis ipv6 rib 32-36 BGP Verifying BFD for IPv6 Configuration 32-37Router# show bfd neighbors Verifying BFDv6 and OSPFv3 Configuration 32-38 Verifying BFDv6 for BGP Configuration 32-39 Example IPv6 Addressing on Loopback Interfaces Example Configuring IPv6 Duplicate Address DetectionExample IPv6 Addressing on Vlan Interfaces Example Customizing ICMPv6 Example Configuring the IPv4 and IPv6 Dual-Stack Example Configuring IPv6 Neighborhood DiscoveryExample Enabling IPv6 Stateless Address Autoconfiguration Example Configuring IPv6 Static Routing Example Configuring BFD and OSPFv3 for IPv6 Example Configuring BFD and Static Routing for IPv6Example Configuring OSPFv3 for IPv6 Following is a sample configuration of OSPFv3 for IPv6 Example Configuring IS-IS for IPv6 Following is a sample configuration of IS-IS for IPv632-43 Example Configuring Multiprotocol-BGP for IPv6 32-44 Example Configuring BFD and Multiprotocol-BGP for IPv6 32-45 Route advertisement messages. Also, define a No ipv6 nd suppress-ra command to enableDebug Commands Show Commands Platform Hardware Commands Valid prefix pool for IPv6 32-47 32-48 32-49 Chapter of the IPv6 Configuration Guide provide 32-50 BGP for IPv6 chapter of the IPv6 Configuration Guide Aggregation Services Router Software Configuration Guide32-51 32-52 Labeled BGP Support 33-1 VPN/VRF over RFC How to Configure Labeled BGP SupportOverview of Labeled BGP Support 33-2 Configuration Example for Labeled Support Send-label option33-3 Router# show bgp ipv4 unicast labels Verifying Labeled BGP Support33-4 Labels Vpnv4 vrf LTE12 label 33-5Vpnv4 all label Router# show ip cef vrf LTE12 113.22.12.0 internal 33-6 RFC-3107 Carrying Label Information in BGP-433-7 Feature Information for Labeled BGP Support 33-8 Mpls Traffic Engineering Fast Reroute Link Protection 34-1 34-2 BFD-triggered Fast Reroute R2 R334-3 Fast Reroute Link Protection34-4 Enabling Mpls TE-FRR for EoMPLS on a Global Interface Enables Mpls TE tunnel signaling on the specified interfaceEnabling Mpls TE-FRR on an SVI Interface Mpls traffic-eng tunnels Pseudowire-class pw-class-name 34-6 Enabling Mpls TE-FRR for EoMPLS on an Interface Xconnect peer-ip-address vc-id pw-classpw-class-name34-7 34-8 Enabling Mpls TE-FRR for IS-IS 34-9 34-10 Configuring Primary One-hop Auto-Tunnels 34-11 34-12 Configuring Backup Auto-Tunnels 34-13 Mpls ldp discovery targeted-hello accept command 34-14 Messages from all neighbors Ip rsvp signalling hello bfdEnabling BFD Triggered FRR on an SVI Interface 34-15 Enabling BFD Triggered FRR on a Router Configuration modeEnable Configure terminal Ip rsvp signalling hello bfd 34-16 34-17 Verifying Mpls TE-FRR ConfigurationVerification Examples Router# show mpls traffic-eng tunnels brief 34-18 Use the following command to verify the reservation detailRouter# show mpls traffic-eng tunnels backup Router# show mpls traffic-eng fast-reroute database 34-19 Verifying Backup Auto-TunnelsVerifying Primary One-hop Auto-Tunnels Router# show ip rsvp fast-reroute Verifying BFD Triggered FRR Configuration 34-20 34-21 Database 34-22 Router# show ip rsvp hello Router# show ip rsvp hello bfd nbr 34-23Router# show ip rsvp interface detail Router# show ip rsvp hello bfd nbr detail Example Configuring Backup Auto-Tunnels Example Configuring Mpls TE-FRRExample Configuring Primary One-hop Auto-Tunnels Example Configuring BFD Triggered FRR Mpls TE FRR 34-25 34-26 34-27 34-28 Layer 2 Control Protocol Peering, Forwarding, and Tunneling 35-1 Layer 2 Control Protocol Forwarding Layer 2 Control Protocol Tunneling35-2 35-3 L2protocol peer protocol Configuring Layer 2 PeeringDefault Action Configuration Option 35-4 Configuring Layer 2 Forwarding 35-5 Protocol-Specifies the protocol to be forwarded Routerconfig-if# l2proto-forward tagged CdpRouterconfig-if# service instance Ethernet 35-6 Configuring Layer 2 Tunneling 35-7 L2protocol tunnel protocol Bridge-domain bridge-id 35-8 Verifying Layer 2 Tunneling Verifying Layer 2 PeeringVerifying Layer 2 Forwarding 35-9 Following is a sample configuration of layer 2 peering Example Configuring Layer 2 PeeringExample Configuring Layer 2 Forwarding 35-10 Example Configuring Layer 2 Tunneling 35-11 Router 35-12 35-13 Commands Cisco IOS LAN Switching Commands 35-14 Following command was introduced l2proto-forward 35-15 35-16 Configuring Inverse Muliplexing over ATM 36-1 How to Configure IMA 36-2 Interface ATMslot-number/IMAima-group-number Configuring ATM IMA on T1/E1 InterfaceIma-groupima-group-number No ip address Atm bandwidth dynamic No atm ilmi-keepalive Configuring ATM IMA over Mpls Configuring the T1/E1 Controller36-4 Ima-groupgroup-number Configuring an ATM IMA InterfaceClock source internal 36-5 You can configure ATM over Mpls in the following modes Configuring ATM over Mpls Pseudowire InterfaceDisables the Ilmi keepalive parameters 36-6 Configures the ATM interface Configuring a Port Mode PseudowireConfiguring an N-to-1 VCC Cell Mode 36-7 Xconnect ip-addressport-numberencapsulation mpls one-to-one Configuring an N-to-1 vPC Cell ModeEnable Configure terminal Interface ATMslot/IMAgroup-number 36-8 ATM AAL5 SDU VCC Transport 36-9 L2transport encapsulation for the VCC mode Verifying IMA ConfigurationsSets the encapsulation type to AAL5. AAL5 is the default 36-10 Enters the global configuration mode How to Configure ATM Class of ServiceConfiguring Constant Bit Rate 36-11 Configuring Unspecified Bit Rate Mode36-12 IMA links and the bandwidth of each link Configuring Unspecified Bit Rate PlusATM class of service with the rate equal to the bandwidth Ubr+ pcr-rate mcr-rate Pcr-rate-Peak cell rate in Kbps Configures the UBR+ QoS class for an ATM permanent virtualCircuit and specifies the bandwidth Mcr-rate-Peak cell rate in Mbps Example Creating an IMA Interface Configuration ExamplesExample Configuring a Port Mode Pseudowire 36-15 Example Configuring CBR Example Configuring an N-to-1 VCC Cell ModeExample Configuring an N-to-1 VPC Cell Mode Example Configuring UBR Example Configuring VBR for Real Time Traffic Configuring Marking Mpls Experimental BitsExample Configuring UBR Plus Example Configuring VBR for Non-Real Time Traffic Applying the Policy-map Applying a Policy map on PVC and PVP36-18 Attaches a policy map to the input interface Disables the Ilmi trap parametersSets the PVC encapsulation type to AAL0 36-19 Applying a Policy map on ATM IMA Interface 36-20 36-21 Creating a Table-mapTable-maptable-map-name Interface ATM slot/IMA group-number Map from from-value to to-value Default copyCreating a Policy-map for SVI Interface 36-22 Applying a Service Policy on SVI Interface Mpls ip Service-policy output policy-map-name36-23 36-24 36-25 Feature Information for Inverse Multiplexing over ATM 36-26 IPv6 over Mpls 6PE and 6VPE 37-1 37-2 Benefits of 6PE and 6VPE IPv6 on Provider Edge Routers37-3 IPv6 router on the customer IPv6 on VPN Provider Edge RoutersComponents of MPLS-based 6VPE Network PE equipment, connected to CEs and entry Supported Features 37-5 Scalability Numbers How to Configure IPv6 over Mpls 6PE and 6VPEConfiguring 6PE Interface Numbers Address-family ipv6 Exit-address-family37-7 37-8 Configuring 6VPE Setting up IPv6 Connectivity from PE to CE Routers37-9 Vrf-name-Optional a specific VRF table for an IPv6 Setting up MP-BGP Peering to the Neighboring PEVRF table for an IPv6 address 37-10 Address prefixes Places the router in address family configuration mode forEnable the exchange of information with a BGP neighbor Extended-Specifies that only extended communities will be Setting up MPLS/IPv4 Connectivity with LDP 37-12 Creating IPv6 VRFs on PE Routers 37-13 37-14 To configure dual-stack VRF, complete the following stepsSessions that use standard IPv4 address prefixes Address-family ipv4 Router# show bgp vpnv6 unicast all Verifying IPv6 over Mpls 6PE and 6VPE Configuration37-15 Router# show ipv6 protocols vrf vpe1 37-16 Router# show ipv6 cef vrf cisco1 37-17 Router# show ipv6 route vrfRouter# show mpls forwarding-table vrf vpe1 37-18 Example Configuring 6PEFollowing is a sample configuration of 6PE Router# show bgp ipv6 200133/64 Example Configuring 6VPE Following is a sample configuration of 6VPE37-19 37-20 Feature Information for IPv6 over Mpls 6PE and 6VPE 37-21 37-22 Storm Control 38-1 Configuring Storm Control 38-2 38-3 Verifying Storm Control 38-4 38-5 Configuring Error Disable RecoveryErrdisable recovery cause Storm-control Error-disable cause Monitoring Error Disable RecoverySeconds-Specifies the time to recover from a specified Cause Configuration Example for Storm Control 38-7Router# debug platform hardware ether SC 38-8 Feature Information for Storm Control 38-9 38-10 Remote Loop-Free Alternate Fast Reroute 39-1 39-2 39-3 Remote LFA-FRR Link Protection Avoiding Traffic Drops Pseudowire Redundancy over FRRBenefits of Remote LFA-FRR 39-4 Conditions for Switchover CESoPSN, SAToP, and ATM/IMA39-5 Configuring Remote LFA-FRR for IS-IS 39-6 39-7 Switch Virtual Interface SVISpecifies an IP address for the specified interface Ip router isis 39-8 Configuring Remote LFA-FRR for Ospf 39-9 Enables the Ospf routing protocol and enters the router 39-10Router ospf Configuring Remote LFA-FRR for Ethernet and TDM Pseudowires Enables Mpls LDP synchronization on interfaces for an Ospf39-11 Targeted hello messages from all neighbors Configuring Remote LFA-FRR on a Global InterfaceAccept-Configures the router to respond to requests for 39-12 Configuring Remote LFA-FRR on a GigabitEthernet Interface 39-13 Configuring Remote LFA-FRR on an SVI Interface 39-14 Configuring Remote LFA-FRR on IS-IS 39-15 Passive-interfaceinterface-type interface-number 39-16 39-17 39-18 Backup peer peer-ip-address vc-id Configuring LFA-FRR for EoMPLSDisables sending routing updates on an interface 39-19 39-20 Removes an IP address or disables IP processingEnables automatic negotiation Negotiation auto Configuring LFA-FRR for ATM/IMA 39-21 39-22 Exit Interface CEM slot/port No ip address Configuring LFA-FRR for CESoPSNBackup peer peer-ip-address 39-23 39-24 Configuring LFA-FRR for SAToP Exit Interface CEM slot/port39-25 39-26 Verification Examples for Remote LFA-FRR 39-27 Router# show ip ospf fast-reroute remote-lfa tunnels Verifying Remote LFA-FRR Configuration39-28 Router# show ip cef 171.1.1.0 internal 39-29 Router# show ip ospf ribRouter# show isis fast-reroute remote-lfa tunnels 39-30 Router# show isis ribRouter# show mpls l2transport vc 1 detail 39-31 39-32 Router# show mpls l2transport vc 3001 detail 39-33 Verifying Remote LFA-FRR Configuration on IS-ISVerifying Remote LFA-FRR Configuration on ATM/IMA Router# show mpls l2 vc 90 detail Verifying Remote LFA-FRR Configuration on CESoPSN 39-34Router# show mpls l2 vc 111 detail Configuration Examples for Remote LFA-FRR Verifying Remote LFA-FRR Configuration on SAToP39-35 Example Configuring Remote LFA-FRR Globally Example Configuring Remote LFA-FRR for IS-ISExample Configuring Remote LFA-FRR for Ospf 39-36 Example Configuring LFA-FRR on ATM/IMA Example Configuring Remote LFA-FRR on an SVI InterfaceExample Configuring EoMPLS Pseudowire Redundancy over FRR 39-37 Example Configuring LFA-FRR on CESoPSN Example Configuring LFA-FRR on SAToP39-38 39-39 Reroute, 39-40 Digital Optical Monitoring 40-1 Routerconfig# transceiver type all How to Enable Transceiver MonitoringEnters transceiver type configuration mode 40-2 Example Displaying Transceiver Information Show interfaces transceiver commandExamples 40-3 Example Displaying Detailed Transceiver Information 40-4Router# show interfaces transceiver detail Example Displaying List of Supported Transceivers 40-5 Example Displaying Threshold Tables 40-6 40-7 40-8 40-9 Example When Transceiver Monitoring is DisabledExample Displaying Threshold Violations Router# show interfaces transceiver threshold violations Example Displaying SPF Details 40-10 40-11 SCP6G44-C1-BMH SFF-8472 40-12 Feature Information for Digital Optical Monitoring 40-13 40-14 IPv4 Multicast 41-1 41-2 Source Specific Multicast Supported ProtocolsPIM SSM for IPv4 Protocol Independent Multicast IGMPv3 IGMPv1IGMPv2 41-4 Reverse Path Forwarding Ip igmp static ssm-map commandPIM SSM Mapping Static SSM Mapping Enabling IPv4 Multicast Routing Configuring IPv4 MulticastEnables multicast routing Ip pim sparse-mode Asr901-multicast source Ip pim sparse-mode Ip igmp version Configuring PIM SSMEnable Configure terminal Ip pim ssm default 41-7 Configuring PIM SSM Mapping Ip igmp ssm-map static access-list source-address41-8 Verifying IPv4 Multicast Routing Verifying PIM SSM41-9 Router# show ip mroute Verifying PIM SSM Mapping41-10 Router# show ip igmp ssm-mapping Show ip igmp groups interface-type interface-number Configuration Examples for IPv4 MulticastShow ip igmp groups group-address Show ip igmp groups interface-type detail Example IPv4 Multicast Routing Example Configuring PIM SSMExample Configuring PIM SSM Mapping 41-12 Example Configuring Rendezvous Point 41-13Router# debug ip igmp 41-14 41-15 Feature Information for IPv4 Multicast 41-16 IGMPv2, 41-17 41-18 IPv6 Multicast 42-1 42-2 Multicast Listener Discovery Protocol for IPv6 IPv6 Multicast GroupsIPv6 Multicast Routing Implementation 42-3 Protocol Independent Multicast 42-4 Source Specific Multicast Mapping for IPv6 PIM-Sparse ModePIM Source Specific Multicast 42-5 Rendezvous Point Configuring IPv6 MulticastEnabling IPv6 Multicast Routing 42-6 Enable Configure terminal No ipv6 mfib Disabling IPv6 Multicast Forwarding42-7 No ipv6 mld router Disables IPv6 multicast forwarding on the routerDisabling MLD Device-Side Processing 42-8 Configuring MLD Protocol on an Interface 42-9No ipv6 mld router Configuring a Rendezvous Point 42-10 Configuring PIM SSM Options Enable Configure terminal Ipv6 pim42-11 Disabling PIM SSM Multicast on an Interface Configuring IPv6 SSM MappingDisables PIM on the specified interface No ipv6 pim No ipv6 mld vrf vrf-namessm-map query dns Configure terminal Ipv6 mld vrf vrf-namessm-map enableVerifying IPv6 Multicast 42-13 Router# show ipv6 mld traffic 42-14Router# show ipv6 mld interface gigabitethernet 0/1 Router# show ipv6 pim interface 42-15 Router# show ipv6 mld groups summaryRouter# show ipv6 pim neighbor count Router# show ipv6 mroute 42-16Router# show ipv6 pim neighbor Router# show ipv6 pim topology Router# show ipv6 pim group-map FF0EE0111 42-17Router# show ipv6 pim topology route-count Router# show ipv6 pim range-list 42-18 Router# show ipv6 pim trafficRouter# show ipv6 pim join-prune statistic Following example 42-19 Router# show ipv6 mfib summary 42-20Router# show ipv6 mfib status Router# show ipv6 mfib interface Example Enabling IPv6 Multicast Routing Configuration Examples for IPv6 MulticastExample Configuring IPv6 SSM Mapping 42-21 Command Name Description 42-22 42-23 Feature Information for IPv6 Multicast Chapter of the IP Multicast PIM Configuration Guide42-24 Chapter of the IP Multicast LSM Configuration Guide 42-25 42-26 Configuring Switched Port Analyzer Span Limitations and Configuration Guidelines43-1 Understanding Span Following sections describe Span43-2 Span Session Source Interface43-3 Traffic Types Configuring SpanDestination Interface Span Traffic Removing Sources or Destination from a Span Session 43-5 Clears existing Span configuration for a session Configuration Examples for SpanEnable Configure terminal No monitor session sessionnumber Verifying Local Span 43-7 Rspan Vlan 43-8 Feature Information for Switched Port Analyzer 43-9 43-10 See BSC IN-1 IN-2 IN-3 IN-4 IN-5 See MSC IN-6 IN-7 IN-8 IN-9 IN-10