Web Management Guide-R02
Table Of Contents
- How to Use This Guide
- Contents
- Figures
- Tables
- Getting Started
- Web Configuration
- Using the Web Interface
- Basic Management Tasks
- Displaying System Information
- Displaying Hardware/Software Versions
- Configuring Support for Jumbo Frames
- Displaying Bridge Extension Capabilities
- Managing System Files
- Setting the System Clock
- Configuring the Console Port
- Configuring Telnet Settings
- Displaying CPU Utilization
- Configuring CPU Guard
- Displaying Memory Utilization
- Resetting the System
- Interface Configuration
- VLAN Configuration
- Address Table Settings
- Spanning Tree Algorithm
- Congestion Control
- Class of Service
- Quality of Service
- VoIP Traffic Configuration
- Security Measures
- AAA (Authentication, Authorization and Accounting)
- Configuring User Accounts
- Web Authentication
- Network Access (MAC Address Authentication)
- Configuring HTTPS
- Configuring the Secure Shell
- Access Control Lists
- Filtering IP Addresses for Management Access
- Configuring Port Security
- Configuring 802.1X Port Authentication
- DoS Protection
- DHCP Snooping
- DHCPv6 Snooping
- ND Snooping
- IPv4 Source Guard
- IPv6 Source Guard
- ARP Inspection
- Application Filter
- Basic Administration Protocols
- Configuring Event Logging
- Link Layer Discovery Protocol
- Simple Network Management Protocol
- Configuring Global Settings for SNMP
- Setting Community Access Strings
- Setting the Local Engine ID
- Specifying a Remote Engine ID
- Setting SNMPv3 Views
- Configuring SNMPv3 Groups
- Configuring Local SNMPv3 Users
- Configuring Remote SNMPv3 Users
- Specifying Trap Managers
- Creating SNMP Notification Logs
- Showing SNMP Statistics
- Remote Monitoring
- Setting a Time Range
- Ethernet Ring Protection Switching
- MLAG Configuration
- OAM Configuration
- LBD Configuration
- Multicast Filtering
- Overview
- Layer 2 IGMP (Snooping and Query for IPv4)
- Configuring IGMP Snooping and Query Parameters
- Specifying Static Interfaces for a Multicast Router
- Assigning Interfaces to Multicast Services
- Setting IGMP Snooping Status per Interface
- Filtering IGMP Packets on an Interface
- Displaying Multicast Groups Discovered by IGMP Snooping
- Displaying IGMP Snooping Statistics
- Filtering and Throttling IGMP Groups
- MLD Snooping (Snooping and Query for IPv6)
- Configuring MLD Snooping and Query Parameters
- Setting Immediate Leave Status for MLD Snooping per Interface
- Specifying Static Interfaces for an IPv6 Multicast Router
- Assigning Interfaces to IPv6 Multicast Services
- Filtering MLD Query Packets on an Interface
- Showing MLD Snooping Groups and Source List
- Displaying MLD Snooping Statistics
- Filtering and Throttling MLD Groups
- Multicast VLAN Registration for IPv4
- IP Tools
- IP Configuration
- General IP Routing
- IP Services
- Appendices
Chapter 14
| Multicast Filtering
Layer 2 IGMP (Snooping and Query for IPv4)
– 531 –
Note:
The default values recommended in the MRD draft are implemented in the
switch.
Multicast Router Discovery uses the following three message types to discover
multicast routers:
◆ Multicast Router Advertisement – Advertisements are sent by routers to
advertise that IP multicast forwarding is enabled. These messages are sent
unsolicited periodically on all router interfaces on which multicast forwarding
is enabled. They are sent upon the occurrence of these events:
■
Upon the expiration of a periodic (randomized) timer.
■
As a part of a router's start up procedure.
■
During the restart of a multicast forwarding interface.
■
On receipt of a Solicitation message.
◆ Multicast Router Solicitation – Devices send Solicitation messages in order to
solicit Advertisement messages from multicast routers. These messages are
used to discover multicast routers on a directly attached link. Solicitation
messages are also sent whenever a multicast forwarding interface is initialized
or re-initialized. Upon receiving a solicitation on an interface with IP multicast
forwarding and MRD enabled, a router will respond with an Advertisement.
◆ Multicast Router Termination – These messages are sent when a router stops IP
multicast routing functions on an interface. Termination messages are sent by
multicast routers when:
■
Multicast forwarding is disabled on an interface.
■
An interface is administratively disabled.
■
The router is gracefully shut down.
Advertisement and Termination messages are sent to the All-Snoopers multicast
address. Solicitation messages are sent to the All-Routers multicast address.
Note:
MRD messages are flooded to all ports in a VLAN where IGMP snooping or
routing has been enabled. To ensure that older switches which do not support MRD
can also learn the multicast router port, the switch floods IGMP general query
packets, which do not have a null source address (0.0.0.0), to all ports in the
attached VLAN. IGMP packets with a null source address are only flooded to all
ports in the VLAN if the system is operating in multicast flooding mode, such as
when a new VLAN or new router port is being established, or an spanning tree
topology change has occurred. Otherwise, this kind of packet is only forwarded to
known multicast routing ports.