Multicast protocols | Nortel Networks Optivity Switch specification

122Chapter 6 Using Multicast Manager

Multicast protocols

Passport 1000 Series switches and Passport 8600 switches support the following multicast protocols:

•Distance Vector Multicast Routing Protocol (DVMRP)

•Internet Group Management Protocol (IGMP)

•IGMP Snooping

At its most basic, IP multicast is the communication of data and services to multiple destinations with a single transmission. Refer to Networking Concepts for the Passport 1000 Series Routing Switch Release 2.0 and Networking Concepts for the Passport 8000 Series Routing Switch for more information on multicast and multicast protocols.

DVMRP

DVMRP advertises shortest-path routes to multicasting source networks (any network containing hosts with the capability to issue multicast datagrams). When DVMRP is coupled with IGMP membership, a multicast stream is learned from both the routers and directly attached hosts.

IGMP

IGMP allows a host to register group memberships with the local querier router to receive any datagrams sent to this router and targeted to a group with a specific IP Multicast address. The protocol also allows a router to learn the existence of group members on its directly attached networks. The router periodically sends a general query message to each of its local networks. Any host that is a member of any multicasting group identifies itself by a sending a response.

IGMP Snooping

IGMP Snooping uses IGMP messages to prune group membership per port within a VLAN. The switch listens to group reports for each port and builds a database of multicast group members per port. Only those ports that are specified in the database receive multicast traffic, instead of all the ports in the VLAN.

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Nortel Networks Optivity Switch manual Multicast protocols, Igmp Snooping, Using Multicast Manager

Contents

Using Optivity Switch Manager Release Restricted rights legend Copyright 2001 Nortel NetworksTrademarks Statement of conditions Using Optivity Switch Manager Release Nortel Networks NA Inc. software license agreement 208963-B Contents Chapter Configuring Optivity Switch Manager Contents Chapter Using MultiLink Trunking Manager Chapter Using Multicast Manager Chapter Using Log Manager Index Figures New Vlan dialog box with bySubnet selected Figures Figures 208963-B Tables Tables Preface Before you begin Text conventions Related publications Preface Preface How to get help Technical Solutions Center Telephone Preface 208963-B Chapter Introducing Optivity Switch Manager What is Optivity Switch Manager? Introducing Optivity Switch Manager Optivity Switch Manager featuresOptivity Switch Manager submanagers Vlan Manager MultiLink Trunking Manager Device Manager Multicast ManagerLog Manager Chapter Using Optivity Switch Manager Starting Optivity Switch Manager Using Optivity Switch Manager Using the Optivity Switch Manager window Shows the Optivity Switch Manager window Parts of the Optivity Switch Manager window Optivity Switch Manager menu barDescribes the parts of the Optivity Switch Manager window Part Description Optivity Switch Manager menus and commands Shortcut Menu Command Keys Description Using the Optivity Switch Manager shortcut menu on Finding unsaved configurations Find Unsaved Configurations dialog box Using the Optivity Switch Manager shortcut menu Shortcut menu 208963-B Device Properties dialog box items Viewing device propertiesDescribes the items in the Device Properties dialog box Button Name Description Application Using the toolbar buttonsOptivity Switch Manager and submanager toolbar buttons Opens a Telnet session in a separate window Field Description Optivity Switch Manager status barStatus bar fields Optivity Switch Manager contents pane icons Icon Name Description Describes the device iconsDevice icons Adjusting the contents pane Working with the network topology map Loading a saved network topology map Open File dialog box Saving a topology map Type the file name with a .topo file extension Click Save Type the name or the IP address of the device Click Find Printing a topology mapFinding a device in the topology map Optivity Switch Manager display before Layout command Arranging devices on the topology map Getting help Chapter Configuring Optivity Switch Manager Discovering your network Configuring Optivity Switch Manager Discovering devices on a network Preferences dialog box items Section Description Map Layout Restricting discovery Snmp Layout slider Restrict Discovery dialog box Accessing devices within different Snmp communities Communities dialog box fields Fields Descriptions Chapter Using Vlan Manager What is Vlan Manager? Maximum Switch Number of STGs Number of VLANs Using Vlan ManagerMaximum STGs and VLANs supported by switches Spanning Tree Protocol Vlan Manager window Vlan Manager featuresStarting Vlan Manager Vlan Manager window contains the parts described in Table Vlan Manager window parts Menu barDescribes the parts of the Vlan Manager window Menu Command Shortcut Key Description Lists the Vlan Manager menus and commandsVlan Manager menus and commands Navigation pane Using Vlan Manager Vlan Manager menus and commandsToolbar Contents pane Vlan Manager status bar fields Status barFinding network resources Using Vlan Manager Find dialog box Describes the port membership types Port membershipViewing the unassigned ports Port membership types and STGs Unassigned Ports table fields Viewing tagged PortsDescribes the Unassigned Ports table fields Tagging Ports table fields Viewing isolated router ports IRPsDescribes the fields in the Tagging Ports table Isolated Routing Ports table fields Viewing bridge routing PortsDescribes the fields in the Isolated Routing Ports table Field Descriptions Bridge Routing Ports table fields Viewing spanning tree groups STGsDescribes the fields in the Bridge Routing Ports table Icon Name Representation MembersSTG information icons Describes the fields in the Members table Members table fields Viewing and configuring STG parameters PortMembers dialog box Describes the fields in the Configuration table Configuration table fields Status group Describes the fields in the Status table Using Vlan Manager Status table fields Root Root table fields Default VlanDescribes the fields on the Root table Describes the fields in the Default Vlan table Default Vlan table fields Vlan ports Vlan table opens in the contents pane On page 76 describes the fields in the Vlan table Managing spanning tree groups STGs Creating a spanning tree group New STG dialog box New STG dialog box items Editing a spanning tree group Deleting a spanning tree group Managing a Vlan Creating a Vlan Creating a port-based Vlan New Vlan dialog box Creating a source IP subnet-based Vlan New Vlan dialog box items New Vlan dialog box with bySubnet selected Creating a protocol-based Vlan New Vlan dialog box with byProtocolId selected User-defined protocols in a protocol-based Vlan Creating a source MAC address-based Vlan New Vlan dialog box with bySrcMac selected Deleting a Vlan Edit Mac Vlan dialog box Viewing Vlan members in Optivity Switch Manager Vlan topology in the Optivity Switch Manager contents pane Viewing STG port members Using Vlan Manager Viewing STG port members Viewing STG root configuration Using Vlan Manager Chapter Using MultiLink Trunking Manager What is MultiLink Trunking Manager? Starting MultiLink Trunking Manager MultiLink Trunking Manager featuresSwitch Number of MLTs Maximum MultiLink Trunking Manager window parts Using MultiLink Trunking ManagerMultiLink Trunking Manager window MultiLink Trunking Manager submenus Toolbar Contents pane MultiLink Trunking Manager status bar fields Finding network resources Using MultiLink Trunking Manager Viewing trunk connections Describes the fields in the Trunk table Trunk table fields No Trunk table fields Viewing no trunk configurationsDescribes the fields in the No Trunk table Fields Description Viewing isolated devices Describes the fields in the Isolated Device table Isolated Device table fields Creating an MLT with one device Managing MultiLink Trunks MLTsCreating an MLT Describes the items in the Insert MLT dialog box Insert MLT dialog box items for a single device Creating a new MLT on a pair of devices Trunk table for a pair of devices Insert MLT dialog box pair of devices selected Viewing MLT port information Insert MLT dialog box items for two nodes Editing a port on an MLT Port dialog box Deleting an MLT Editing an MLT Trunk table Highlight topology view in Optivity Switch Manager Using MultiLink Trunking Manager 208963-B Chapter Using Multicast Manager What is Multicast Manager? Igmp Snooping Using Multicast ManagerMulticast protocols Multicast Manager window Multicast Manager featuresStarting Multicast Manager Describes the parts of the Multicast Manager window Multicast Manager window parts Multicast Manager menus and commands Menu Command Shortcut key Purpose Using Multicast Manager Multicast Manager menus and commands Multicast Manager navigation pane Dvmrp Table in the contents pane Finding a network resource Multicast Manager status bar fields Using Multicast Manager Viewing Igmp Snoop groups General tab Igmp Snoop Table Describes the fields in the General tab General tab fields Receiver tab Receiver tab provides information about Igmp group receivers Describes the fields in the Receiver tab Receiver tab fields Sender tab Describes the fields in the Sender tab Sender tab fields Static tab fields Static tabDescribes the fields in the Static tab Using Multicast Manager Static tab fields Access tabDescribes the fields in the Access tab Access tab fields Viewing L3-IGMP information Cache tab Cache tab displays L3-IGMP cache information Describes the fields in the Cache tab Cache tab fields Describes the fields in the Interface tab Using Multicast Manager Cache tab fieldsInterface tab Interface tab fields Describes the fields in the Group tab Group tabGroup tab displays L3-IGMP multicast group information Group tab fields Viewing Dvmrp information Globals tab Dvmrp Table Describes the fields in the Globals tab Globals tab fields Using Multicast Manager Globals tab fields Interface tab Dvmrp fields Interface tab-DVMRP fields Neighbor tab fields Neighbor tabDescribes the fields in the Neighbor tab Route tab Describes the fields in the Route tab Route tab Dvmrp fields Describes the fields in the Next Hop tab Using Multicast Manager Route tab Dvmrp fieldsNext Hop tab Route tab lists multicast route information Using Multicast Manager Next Hop tab fieldsViewing MRoute information Route tab MRoute Route tab MRoute fields Using Multicast Manager Route tab MRoute fields Viewing Multicast Groups information Source Subnets tab Multicast Group table Describes the fields in the Source Subnets tab Source Subnets tab fields Receivers tab Describes the fields in the Receivers tab Highlighting a multicast device Highlighting a multicast forwarding path Optivity Switch Manager with forwarding node highlighted Using Multicast Manager Using Multicast Manager 208963-B Chapter Using Log Manager Uploading Passport syslog files to your management station Uploading a file using Device ManagerUsing Log Manager Uploading a file using the CLI Initiating a Telnet session from Device Manager Using the Telnet application Telnet dialog box To use the copy command to upload a file Enter Uploading the syslog file Passport/Accelar 1000 Series switches version Starting Log Manager Opening a syslog file SysLog dialog box SysLog dialog box items and buttons Item or button Description Using Log Manager SysLog dialog box items and buttons Specific log entries on Exporting a log file Locating specific log entries SysLog Find dialog box Filtering log entries SysLog Filter dialog box Using Log Manager Using Log Manager 208963-B Appendix a Additional reference sources Appendix a Additional reference sources 208963-B Optivity Switch Manager problems and solutions Resolving problemsError messages Problem Solution Message Meaning Index Index Index L3-IGMP Highlighting devices and MLTs in Optivity Index Snmp STP Vlan Index