Asante Technologies 35160 user manual Configuring IP Multicast Traffic Management, Igmp Snooping

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IGMP

Communication on a LAN (between the end stations and the routers) is managed by the Internet Group Management Protocol (IGMP). For complete information about IGMP, see RFC 1112, “Host Extensions...” and RFC 2236, “Internet Group Management Protocol, Version 2” <ftp://ftp.isi.edu/in-notes/ rfc2236.txt>.

A router that supports multicast and IGMP sends periodic messages called “queries” on its LAN interfaces. These queries inquire if any end stations want to join a multicast group. End stations signal their desire to join the multicast group by responding with an IGMP “report.” By using a multicast routing protocol, such as Protocol-Independent Multicast (PIM), routers maintain forwarding tables that they use to forward multicast datagrams.

Packets delivered to members of the multicast group are identified by a single multicast group address. Any host, regardless of whether it is a member of a group, can send to a group. However, only the members of a group receive the message. Membership in an IP multicast group is dynamic; hosts can join and leave at any time. There is no restriction on the location or number of members in a multicast group. A host can be a member of more than one multicast group at a time.

IGMP Snooping

A traditional Layer-2 switch is unable to determine which end stations on the LAN are interested in which multicast groups. To avoid unnecessary flooding, the switch may use IGMP Snooping. That means the switch listens to IGMP messages to learn which ports want multicast traffic from which multicast groups. The switch inserts the correct Ethernet multicast address into the forwarding table for the ports where an end station has joined a multicast group.

4.4.1 Configuring IP Multicast Traffic Management

The Multicast Traffic Management Menu allows the manager to set up group transmission. To access the Multicast Traffic Management Menu, type c in the Unicast Forwarding Database Configuration Menu. This accesses a screen similar to the following:

IntraCore 35160-T IP Multicast Traffic Management Menu VID: [01]

IP Multicast Forwarding Database

--------------------------------

IP Multicast Address Count

: 0

IGMP

: [Disabled]

IGMP Query

: [Disabled]

IGMP Proxy Report Forward

: [Disabled]

Query Port Info: [+: Query Port -: Non-Query Port]

-------- --------

<Cmd> <Description>

iToggle IGMP Enable/Disable

v Advanced IGMP Configuration

m IP Multicast Forwarding Database Configuration

r Reset IP Multicast Forwarding Database

d Display Group Addresses

a Display Group Addresses in All VLAN

q Return to previous menu

root>

N)ext VLAN

P)rev VLAN

S)elect VLAN

Enabling and Disabling IGMP Snooping

To enable or disable IGMP Snooping on the switch, from the Multicast Traffic Management Menu, type i to toggle the status of IGMP Snooping.

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Contents IntraCore 35160 Series Quick Start Guide IntraCore 35160 Series Layer 2 Gigabit Switches User’s ManualTable of Contents Page Introduction FeaturesPackage Contents SwitchCore CXE2010LEDs 2 IC35160-G 1 IC35160-TFront and Back Panel Descriptions Management and ConfigurationWeb-Based Interface Console InterfaceSnmp Management Installation Overview Hardware Installation and SetupSafety Overview Recommended Installation ToolsPower Requirements Installation into an Equipment RackEnvironmental Requirements Cooling and AirflowGbic Interfaces Installing a GbicConnecting Power Installing the Optional Emergency Power SupplyRemoving a Gbic Gbic Care and Handling1 10/100/1000BaseT Ports Cabling Procedures Connecting to the NetworkGigabit Ethernet Ports Cabling Procedures SetupConnecting to a Console Connecting Via Telnet Connecting Via the Web BrowserIP Assignment Changing the PasswordSimple Network Management Protocol Snmp Accessing a Submenu ConfigurationLogging Exiting a SubmenuGeneral Information Configuration MenuChanging System Administration Info Administration ConfigurationPort Configuration System IP ConfigurationChanging System IP Information Page Enabling or Disabling a Port Advanced Port ConfigurationSetting Port Default Priority Setting Port Class of ServiceSetting Port Maximum Packet Length Enabling or Disabling 802.3x Flow ControlGlobal Port Configuration Unicast Forwarding Database ConfigurationDisplaying the Forwarding Database Security Management Setting the MAC Address Age-Out TimeVlan Management Searching for a MAC AddressSnmp Configuration Protocol ConfigurationChanging Community Strings Adding or Updating a Trap Receiver Enabling Authentication TrapsDeleting a Trap Receiver Spanning Tree Protocol STP ConfigurationSetting Port Priority and Path Cost Spanning Tree Port ConfigurationEnabling and Disabling STP Trunk Group Configuration Defining the Priority List QoS Priority Queue ManagementAssigning Packets to Priority Queues Example Setting Console UI Time-out Period User Interface ConfigurationSetting SSH/Telnet UI Time-out Adding or Deleting an Access Host Change PasswordEnabling or Disabling SSH and Telnet System Utilities Access ControlEnabling or Disabling the Web Server Enabling or Disabling System Port Mirroring Port MirroringAdding or Deleting a Monitor Port Resetting the Switch System ResetSystem Clock System Log Scheduling a System ResetClearing the System Log Bootstrap ConfigurationTftp File Transfers Ping Utility StatisticsSnmp and Rmon Management Advanced ManagementRmon Management Enabling and Disabling Duplicated IP Detection Duplicated IP Detection and TrapEnabling and Disabling Duplicated IP Trap Viewing a List of Duplicated IP AddressesEnabling and Disabling Station Movement Trap Configuring Port SecurityConfiguring Port Lock and Intruder Lock Configuring Port New Node Detection TrapConfiguring Security Level 2 or Level Port-based Network Access ControlSetting the Intruder Trap Resetting Security to DefaultsPage Name Description Port Control SettingsSetting Timers Radius Server IP Setting Radius ParametersServer Port Other Vlan Features of the switch Vlan Specifications for the IntraCore 35160 SeriesVlan Management Creating a Vlan Configuring Static Vlan GroupsAdvanced Static Vlan Configuration Setting the Port Vlan ID Configuring Vlan Port Attributes Configuring Port Receive Frame Type Adding and Deleting VLANs from the PortDisplaying a Summary of Vlan Groups Setting Port TypeIP Multicast Traffic Management Resetting Vlan Configuration to DefaultsDisplaying a Vlan Port Summary Multicast AddressesIgmp Snooping Configuring IP Multicast Traffic ManagementEnabling and Disabling Igmp Snooping Displaying a Summary of Group Addresses Advanced Igmp ConfigurationAdding Ports to the Selected Address IP Multicast Forwarding Database ConfigurationInserting a Multicast Group Address Removing a Multicast Group AddressWeb-Based Management Accessing with a Web BrowserGenl Info General Information Button Front Panel ButtonManagement Buttons Port Config Port Configuration Button Span Tree Spanning Tree Button Addr Address Table Button Snmp ButtonVlan Button Vlan ConfigurationVlan Group Create Set Port Type Port ConfigurationPort Vlan ID Pvid Acceptable Frame TypeSecurity Button Trunking ButtonPort Ingress Filtering Tag/Untag Port Egress TypePage Snmp Management Operations Snmp ManagementSnmp Protocol MIB Tree Community Name and SecurityName Space Path MIB Groups Supported VLANs Switching ConceptsPort-Based VLANs Vlan ID and Tagged FramesPort Vlan ID Spanning Tree ProtocolHow It Works Spanning Tree ParametersFull Duplex, Flow Control, and Auto-negotiation Spanning Tree Port ConfigurationFull Duplex Auto-Negotiation Flow ControlProblem Possible Solutions Appendix A. TroubleshootingSpecifications Appendix B. Features and SpecificationsPhysical Characteristics Environmental Range Technical Support and WarrantyStandards Compliance FCC Compliance Statement Important Safety Instructions Appendix C. FCC Compliance and Warranty StatementsIntraCare Warranty Statement Page Appendix D. Console Port Pin Outs Pin Number Signal NameAppendix E. Online Warranty Registration Bootstrap Configuration Appendix F. BootP ConfigurationImage Banks Loading Software LocallyLoading Software Remotely BOOTP-TFTP
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