Overview | HP IPv6 6200yl, IPv6 2900, IPv6 5400zl, IPv6 3500yl

Multicast Listener Discovery (MLD) Snooping

Overview

Overview

Multicast addressing allows one-to-many or many-to-many communication among hosts on a network. Typical applications of multicast communication include audio and video streaming, desktop conferencing, collaborative com- puting, and similar applications.

Multicast Listener Discovery (MLD) is an IPv6 protocol used on a local link for multicast group management. MLD is enabled per VLAN, and is analogous to the IPv4 IGMP protocol.

MLD snooping is a subset of the MLD protocol that operates at the port level and conserves network bandwidth by reducing the flooding of multicast IPv6 packets.

This chapter describes concepts of MLD snooping and the CLI commands available for configuring it and for viewing its status.

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HP IPv6 6200yl, IPv6 2900, IPv6 5400zl, IPv6 3500yl manual Overview

Contents

ProCurve Switches Page IPv6 Configuration Guide Publication Number Contents Information Sources for Tunneling IPv6 Over IPv4 IPv6 Addressing IPv6 Addressing Configuration Operating Notes Contents Introduction Vii IP Preserve for IPv6 Contents IPv6 Management SecuritySecure Copy and Secure FTP for IPv6 Terminology Page Printed Publications About Your Switch Manual SetElectronic Publications Page IPv6 Command Index Mands covered in this guideExample Index begins on the next Xii Copy Command Min. Level IPv6 Management Xiii Xiv Getting Started Introduction Command Syntax StatementsConventions Command Prompts Configuration and Operation ExamplesScreen Simulations Keys Refer to the switch publications listed in this section 13.01, and includes an IPv6 command index onSources for More Information PIM SM and DM IP routing Vrrp Online Help Getting Documentation From the WebMenu Interface Command Line Interface Web Browser Interface To Set Up and Install the Switch in Your Network Introduction to IPv6 Introduction to IPv6 Migrating to IPv6 IPv6 Propagation Dual-Stack OperationIndividual IPv4 and IPv6 devices ignore each others traffic Over IPv4 tunneling Tunneling Connecting to Devices Supporting IPv6 Over IPv4Information Sources for Tunneling IPv6 Over IPv4 Adding IPv6 Capability Use ModelSupported IPv6 Operation in Release K.13.01 Configuration and Management Management FeaturesSlaac Stateless Automatic Address Configuration IPv6 Addressing Static Address Configuration DHCPv6 Stateful Address ConfigurationDefault IPv6 Gateway Neighbor Discovery ND in IPv6 IPv6 Management Features IPv6 Time ConfigurationTFTPv6 Transfers Telnet6 Configurable IPv6 Security SSHv2 on IPv6IP Preserve Multicast Listener Discovery MLD IP Authorized Managers Diagnostic and Troubleshooting Icmp Rate-LimitingPing6 Traceroute6 IPv6 Neighbor Discovery ND Controls Domain Name System DNS ResolutionEvent Log Loopback Address IPv6 ScalabilityDebug/Syslog Enhancements Path MTU Pmtu Discovery IPv6 Addressing Loopback Address Unspecified Address IPv6 Address Structure and Format Address FormatAddress Notation 2001db8a921560fffe7aadc0 2001db8260021201b4 Network Prefix Interface Device Identifier IPv6 Address Sources IPv6 Addressing OptionsGeneral IPv6 Address Types Related Information IPv6 Address Sources Stateless Address Autoconfiguration SlaacApplications DHCPv6 addressing must be enabled per-VLAN on the switch Stateful DHCPv6 Address ConfigurationRouter Static Address Configuration Refer to Configuring a Static IPv6 Address on a Vlan on Address Types and Scope Address Types Unicast Address Prefixes Address ScopeFe80000000000000021560fffe7aadc0/64 Fe8021560fffe7aasc0/64 IPv6 Addressing Autoconfiguring Link-Local Unicast Addresses Link-Local Unicast Address Configures the Vlan to send DHCPv6 requests Extended Unique Identifier EUIFe80/64 plus a 64-bit device identifier Generate a link-local address Statically Configuring Link-Local Addresses InterfaceRFC 2373 IP Version 6 Addressing Architecture Unique local addresses Stateless Autoconfiguration of a Global Unicast Address Global Unicast Address Static Configuration of a Global Unicast Address Following address assignments on VlanLink-local unicast fe8021560fffe7aadc0/64 Global unicast2001026021221560fffe7aadc0/64 Prefixes in Routable IPv6 Addresses Unique Local Unicast IPv6 Address Anycast Addresses DNS UDP Multicast Application to IPv6 Addressing Overview of the Multicast Operation in IPv6 IPv6 Multicast Address Format Multicast Group Identification Solicited-Node Multicast Address Format Bit Use Loopback Address IPv6 Address Deprecation Unspecified AddressPreferred and Valid Address Lifetimes T e s Do not expire Link-Local Address Router Advertisements Router Solicitations Default IPv6 Router Router Redirection CLI General Configuration Steps Configuring IPv6 Addressing Default Disabled Implements unicast address autoconfiguration as follows Operating Notes Enabling DHCPv6 Default Disabled Configuring a Static IPv6 Address on a Vlan Statically Configuring a Link-Local Unicast Address Syntax no ipv6 address fe80 device-identifier link-local Statically Configuring a Global Unicast Address Device-id Enters a user-defined device identity Statically Configuring An Anycast Address Default None Ipv6 enable Disabling IPv6 on a Vlan Neighbor Discovery ND Duplicate Address Detection DAD DAD Operation Configuring DAD No form of the command restores the default setting Operating Notes View the Current IPv6 Addressing Configuration Address Origin Example of Show IPv6 Command Output IPv6 Addressing Configuration Syntax show run Address autoconfig Router Advertisements Router Access and Default Router SelectionRouter Solicitations Router Redirection Default IPv6 RouterNected View IPv6 Gateway, Route, and Router Neighbors Viewing Gateway and IPv6 Route Information Viewing IPv6 Router Information Router Address The IPv6 address of the router interface Example of Show IPv6 Routers Output Address Lifetimes Preferred LifetimeValid Lifetime Sources of IPv6 Address Lifetimes Link-Local Permanent IPv6 Addressing Configuration IPv6 Management Features Viewing and Clearing the IPv6 Neighbors Cache Viewing the Neighbor Cache Example of Neighbor Cache Without Specifying a Vlan Clearing the Neighbor Cache Syntax clear ipv6 neighbors Telnet6 Operation Outbound Telnet6 to Another Device Viewing the Current Telnet Activity on a Switch Example of Show Telnet Output with Three Sessions Active Enabling or Disabling Inbound Telnet6 Access Viewing the Current Inbound Telnet6 Configuration Configuring Enabling or Disabling the Sntp Mode Sntp and Timep Router on a Vlan configured on the switch Configuring an IPv6 Address for an Sntp ServerVlan must be configured on the switch. For example Fe8021560fffe7aadc0 on Vlan 10, configured on the switch 2001db821560fffe798980 Configuring Enabling or Disabling the Timep Mode Vlan configured on the switch Configured on the switch. For example fe8011215%vlan10 ProCurveconfig# ip timep manual Tftp File Transfers Over IPv6 Tftp File Transfers over IPv6 Enabling Tftp for IPv6 For more information, see Using Auto-TFTP for IPv6 onMenu interface Download OS screen become unavailable Using Tftp to Copy Files over IPv6 Syntax copy source tftp ipv6-addr filename pc unix Using Auto-TFTP for IPv6 Snmp Features Supported Snmp Management for IPv6 Snmp Configuration Commands Supported Supported in the following configuration commandsSNMPv1 and V2c SNMPv3 Show snmp-server Command Output with IPv6 Address Show snmpv3 targetaddress Command Output with IPv6 Address IP Preserve for IPv6 IPv6 Management Features IPv6 Management Features IPv6 Management Features IPv6 Management Security Features IPv6 Management Security Authorized IP Managers for IPv6 Usage Notes IPv6 Management Security Features Configuring Authorized IP Managers for Switch Access Using a Mask to Configure Authorized Management StationsConfiguring Single Station Access Mask and is applied in a different manner Configuring Multiple Station Access T e s Hexadecimal Mask Values and Binary Equivalents FFFFFFFFFFFFFFF8FFFFFFFFFFFFFFFC 1st 2nd 3rd 4th 5th 6th 7th 8th Block IPv6 Mask Ffff FFF8 Binary Equivalents of Authorized Subnet IDs in Hexadecimal Authorized to access the switch for example Granted access 11. Default IPv6 Mask IPv6 Management Security Features Configuring SSH for IPv6 Secure Shell for IPv6 T e Displaying an SSH Configuration Inactive Mands and software utilities to use Secure Copy and Secure FTP for IPv6Message Multicast Listener Discovery MLD Snooping Overview Introduction to MLD Snooping Without MLD, multicast traffic is flooded to all ports Multicast Listener Discovery MLD Snooping Multicast Listener Discovery MLD Snooping Multicast Listener Discovery MLD Snooping Configuring MLD For example, to enable MLD snooping on VlanTo disable MLD snooping on Vlan Enabling or Disabling MLD Snooping on a Vlan Configuring Per-Port MLD Traffic Filters Vlan Name VLAN8 Configuring Fast Leave Configuring the QuerierTo enable the switch to act as querier on Vlan Configuring Forced Fast Leave For example, to disable fast leave on ports in VlanTo enable fast leave on ports in Vlan For example, to enable forced fast leave on ports in Vlan Displaying MLD Status Configuration Current MLD Status Continuation of Figure Multicast Listener Discovery MLD Snooping Current MLD Configuration Following information, for all MLD-enabled VLANs, is shown Specific form of the command might look like this Example of an MLD Configuration for a Specific Vlan Ports Currently Joined Vlan ID Statistics Shows MLD statistics for the specified Vlan vid-VLAN ID For example, the general form of the command Example of MLD Statistics for All VLANs Configured Counters Displays MLD counters for the specified Vlan vid-VLAN ID Following information is shown Multicast Listener Discovery MLD Snooping IPv6 Diagnostic and Troubleshooting Icmp Rate-Limiting Default 10 Range 1 Ping for IPv6 Ping6 Examples of IPv6 Ping Tests Traceroute for IPv6 Syntax traceroute6 ipv6-address hostname Examples of IPv6 Traceroute Probes DNS Configuration DNS Resolver for IPv6 Domain suffix mygroup.procurve.net Viewing the Current Configuration Operating Notes Debug/Syslog for IPv6 Configuring Debug and Event Log MessagingSeverity level System module Debug Command Ip rip database event trigger Configuring Debug Destinations Logging Command Terminology Terminology Index Index DAD Icmp Lldp SCP Sntp Vlan Page 5992-3067