Cisco Systems 71642 manual Router and Switch Multicast Configuration, Enable IP Multicast Routing

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Router and Switch Multicast Configuration

This document is not a network multicast configuration guide. Refer to Configuring IP Multicast Routing for a complete implementation story. This document covers the basics to enable multicast within your network environment.

Enable IP Multicast Routing

IP multicast routing allows the Cisco IOS® software to forward multicast packets. The ip multicast−routing global configuration command is required to allow multicast to function in any multicast enabled network. The ip multicast−routing command should be enabled on all routers within your network between the WLC(s) and their respective access points.

Router(config)#ip multicast−routing

Enable PIM on an Interface

This enables the routing interface for Internet Group Management Protocol (IGMP) operation. The Protocol Independent Multicast (PIM) mode determines how the router populates its multicast routing table. The example provided here does not require the rendezvous point (RP) to be known for the multicast group and therefore sparse−dense−mode is the most desirable given the unknown nature of your multicast environment. This is not a multicast recommendation to be configured to work although the Layer 3 interface directly connected to your controller should be PIM enabled for multicast to function. All interfaces between your WLC(s) and their respective access points should be enabled.

Router(config−if)#ip pim sparse−dense−mode

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Contents Deployment Scenarios Document IDRequirements Components Used IntroductionPrerequisites Executive SummaryVocera Communications Server Capacity Vocera SolutionVocera Badge Overview Vocera Call Capacity ConsiderationsArchitecture Overview Voceras Infrastructure PlanningUnicast−Multicast Delivery Method Multicast in an Lwapp DeploymentLwapp Multicast−Multicast Multicast−Multicast Delivery MethodEnable IP Multicast Routing Router and Switch Multicast ConfigurationEnable PIM on an Interface Deployment Scenarios Disable Switch Vlan Igmp SnoopingMulticast Enhancements in Version 4.0.206.0 and Later Single Controller Deployment Single Controller in Multicast−Multicast ModeMultiple Controller Layer 3 Deployment Multiple Controller Layer 2 DeploymentConstruction Methods and Materials VoWLAN Deployments Ciscos ReccommendationsInventory Leap Considerations Security Mechanisms SupportedVoice, Data and Vocera VLANs Wireless Network InfrastructureNetwork Sizing Deployments and Configuration Switch RecommendationsBadge Configuration Tune AutoRF for Your Environment ∙ How do I know if the tranmit power is too hot or too cold? Create Interfaces Wireless Network Infrastructure ConfigurationCreate the Vocera Voice Interface Wireless−Specific ConfigurationWlan Configuration Wlan ConfigurationAP Detail Configure Access Point DetailConfigure the 802.11b/g Radio Wireless IP Telephony Verification Association, Authentication, and Registration Badge Loses Voice Quality while Roaming Common Roaming IssuesChoppy or Robotic Audio Audio ProblemsRegistration and Authentication Problems One−sided AudioAppendix a AP and Antenna PlacementSignal Reflection Caused by a Wall Cisco Aironet 5959 Antenna Mounted to a Ceiling Interference and Multipath Distortion Signal−to−Noise Ratio SNRSignal Attenuation NetPro Discussion Forums − Featured ConversationsRelated Information