LevelOne GSW-2491TXM user manual Forwarding and Filtering, Igmp Snooping

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Forwarding and Filtering

IGMP Snooping

The switch support IP multicast, you can enable IGMP protocol on web management’s switch setting advanced page, then display the IGMP snooping information in this page, you can view difference multicast group VID and member port in here, IP multicast addresses range from 224.0.0.0 through 239.255.255.255.

The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet Protocol (IP) suite. IP manages multicast traffic by using switches, routers, and hosts that support IGMP. Enabling IGMP allows the ports to detect IGMP queries and report packets and manage IP multicast traffic through the switch. IGMP have three fundamental types of message as follows:

	Message	Description

	Query	A message sent from the querier (IGMP router or switch) asking for a
	Query	response from each host belonging to the multicast group.
		response from each host belonging to the multicast group.

		A message sent by a host to the querier to indicate that the host
	Report	wants to be or is a member of a given group indicated in the report
		message.

	Leave	A message sent by a host to the querier to indicate that the host has
	Group	quit to be a member of a specific multicast group.

When you enable the IGMP Snooping, you will see the relate information show as following figure.

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Contents GSW-2491TXM Page Contents STP Snmp Lacp IGMP/GVRP 101 Page Introduction Management FeaturesSoftware Features Software UpgradeQOS Policy Class of ServicePort Trunk Spanning TreePackage Contents Ethernet Switching Technology Front Panel Physical DimensionRear Panel LED IndicatorsAttaching Rubber Feet Desktop InstallationAttach mounting brackets with screws Rack-mounted InstallationMount the switch in an EIA standard 19-inch Rack Power OnSmall Workgroup Network ApplicationSmall Workgroup Application Segment BridgeStacking Workgroup Stackable switch Master Connecting to the SwitchConsole Management Login in the Console InterfaceMain Menu Main MenuConsole Menu Line Control Key description Port Status Status and CountersPort Counters System Information Administration Configuration Switch Static ConfigurationDevice Information IP ConfigurationUser Name Configuration Password Configuration Port ConfigurationTrunk Configuration Port Mirroring Configuration Port Mirroring interface — Vlan ID Port VID 1~255 Type the Pvid Vlan ConfigurationVlan Configure Create Vlan Group „ Create Port-Based Vlan „ Create 802.1Q Vlan Edit / Delete Vlan Group Group Sorted Mode Priority Configuration MAC Address Configuration „ Edit static MAC address Static MAC Address „ Add the Static MAC Address„ Add the Filtering MAC Address „ Delete static MAC addressFiltering MAC Address „ Delete Filtering MAC address Misc Configuration„ Edit Filtering MAC address „ IFG compensation Disable or Enable Misc Configuration interface STP Protocol Related ConfigurationForward Delay Time forward delay time STP SetupSystem Configuration Per Port Setting Snmp Community Strings „ Add Community Strings Snmp System Options„ Delete Community Name „ Edit Community Name„ Add the trap manager Trap Managers„ Delete Trap Manager Select Delete LacpWorking Ports Setting Lacp State Activity Group Status IGMP/GVRP802.1x 802.1x Setup802.1x Setup interface Per Port Configuration Misc Configuration Factory Default System Reset ConfigurationUpdate Firmware System RebootTftp Configuration Tftp Restore Configuration Tftp Backup Configuration Modem Upgrade Page Preparing for Web Management About Web-based ManagementOnline Help System LoginPort status View the Port Information Port StatisticsAdministrator function, it provides the following functions AdministratorIP Address Switch Setting„ MAC Address Table Entry Basic Switch SettingsAdvanced Setting Default is 300 seconds Miscellaneous Setting „ Igmp Theory of Operation Page Port Controls Console Port InformationTrunking Aggregator setting Aggregator Information State Activity Aggregator InformationTrunking State Activity interface Igmp Snooping Forwarding and FilteringStatic MAC Address MAC filtering Vlan configuration Port-based Vlan Vlan PortBase interface 802.1Q Vlan „ Basic Acceptable Frame type Spanning Tree „ Forward Delay Time forward delay time System ConfigurationPer Port Configuration Port Mirroring Prot Mirroring interface „ System Options Snmp Management„ Trap Manager Security Manager„ Community strings 802.1X 802.1x Configuration Per Port Configuration Tftp Update Firmware Tftp Restore Configuration Configuration Backup„ Default IP address „ Default Gateway „ Subnet mask Factory DefaultTftp Backup Configuration Backup File Name fill the file nameIP Stacking System RebootPanel List IP Stacking interface IP Stacking master switch configure finished interface IP Stacking Finished configuring interface „ Improper Network Topologies „ Faulty or loose cablesIncorrect connections „ Non-standard cables„ Cabling Diagnosing LED IndicatorsStandard Switch architectureLED Indicators ConnectorMAC address DimensionsPower Supply Safety