Web Management Guide-R04
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
- Layer 2 Queue Settings
- Layer 3/4 Priority Settings
- Setting Priority Processing to IP Precedence/DSCP or CoS
- Mapping Ingress DSCP Values to Internal DSCP Values
- Mapping CoS Priorities to Internal DSCP Values
- Mapping Internal DSCP Values to Egress CoS Values
- Mapping IP Precedence Values to Internal DSCP Values
- Mapping IP Port Priority to Internal DSCP Values
- 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
- DHCPv4 Snooping
- DHCPv6 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
- Switch Clustering
- Setting a Time Range
- Ethernet Ring Protection Switching
- OAM Configuration
- Connectivity Fault Management
- Configuring Global Settings for CFM
- Configuring Interfaces for CFM
- Configuring CFM Maintenance Domains
- Configuring CFM Maintenance Associations
- Configuring Maintenance End Points
- Configuring Remote Maintenance End Points
- Transmitting Link Trace Messages
- Transmitting Loop Back Messages
- Transmitting Delay-Measure Requests
- Displaying Local MEPs
- Displaying Details for Local MEPs
- Displaying Local MIPs
- Displaying Remote MEPs
- Displaying Details for Remote MEPs
- Displaying the Link Trace Cache
- Displaying Fault Notification Settings
- Displaying Continuity Check Errors
- OAM Configuration
- UDLD Configuration
- LBD Configuration
- Smart Pair 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 Query Packets and Multicast Data
- Displaying Multicast Groups Discovered by IGMP Snooping
- Displaying IGMP Snooping Statistics
- Filtering and Throttling IGMP Groups
- MLD Snooping (Snooping and Query for IPv6)
- Multicast VLAN Registration for IPv4
- Multicast VLAN Registration for IPv6
- Basic IP Functions
- IP Configuration
- General IP Routing
- IP Services
- Appendices
- Glossary
Chapter 14
| Multicast Filtering
Layer 2 IGMP (Snooping and Query for IPv4)
– 590 –
◆ Query Interval – The interval between sending IGMP general queries. (Range:
2-31744 seconds; Default: 125 seconds)
An IGMP general query message is sent by the switch at the interval specified
by this attribute. When this message is received by downstream hosts, all
receivers build an IGMP report for the multicast groups they have joined.
This attribute applies when the switch is serving as the querier (page 578), or as
a proxy host when IGMP snooping proxy reporting is enabled (page 578).
◆ Query Response Interval – The maximum time the system waits for a
response to general queries. (Range: 10-31740 tenths of a second in multiples
of 10; Default: 10 seconds)
This attribute applies when the switch is serving as the querier (page 578), or as
a proxy host when IGMP snooping proxy reporting is enabled (page 578).
◆ Last Member Query Interval – The interval to wait for a response to a group-
specific or group-and-source-specific query message. (Range: 1-31744 tenths
of a second in multiples of 10; Default: 1 second)
When a multicast host leaves a group, it sends an IGMP leave message. When
the leave message is received by the switch, it checks to see if this host is the
last to leave the group by sending out an IGMP group-specific or group-and-
source-specific query message, and starts a timer. If no reports are received
before the timer expires, the group record is deleted, and a report is sent to the
upstream multicast router.
A reduced value will result in reduced time to detect the loss of the last
member of a group or source, but may generate more burst traffic.
This attribute will take effect only if IGMP snooping proxy reporting is enabled
(page 578) or IGMP querier is enabled (page 578).
◆ Last Member Query Count – The number of IGMP proxy group-specific or
group-and-source-specific query messages that are sent out before the system
assumes there are no more local members. (Range: 1-255; Default: 2)
This attribute will take effect only if IGMP snooping proxy reporting or IGMP
querier is enabled.
◆ Proxy Query Address – A static source address for locally generated query and
report messages used by IGMP Proxy Reporting. (Range: Any valid IP unicast
address; Default: 0.0.0.0)
IGMP Snooping uses a null IP address of 0.0.0.0 for the source of IGMP query
messages which are proxied to downstream hosts to indicate that it is not the
elected querier, but is only proxying these messages as defined in RFC 4541.
The switch also uses a null address in IGMP reports sent to upstream ports.
Many hosts do not implement RFC 4541, and therefore do not understand
query messages with the source address of 0.0.0.0. These hosts will therefore
not reply to the queries, causing the multicast router to stop sending traffic to
them.