Configuring IP Multicast 723
Internet Group Management Protocol
The Internet Group Management Protocol (IGMP) is used by IPv4 systems (hosts and routers) to report
their IP multicast group memberships to any neighboring multicast routers. The PowerConnect
8024/8024F performs the multicast router role of the IGMP protocol, which means it collects the
membership information needed by the active multicast routing. The currently supported multicast
routing protocols in the PowerConnect 8024/8024F are DVMRP, PIM-DM, and PIM-SM.
The PowerConnect 8024/8024F supports IGMP Version 3. Version 3 adds support for source filtering,
which is the ability for a system to report interest in receiving packets only from specific source addresses,
as required to support Source-Specific Multicast [SSM], or from all but specific source addresses, sent to
a particular multicast address. Version 3 is designed to be interoperable with Versions 1 and 2.
The IGMP menu page contains links to web pages that define and display IGMP parameters and data.
To display this page, click IPv4 Multicast
→
IGMP in the tree view.
Following are the web pages accessible from this menu page:
• IGMP Global Configuration
• Routing Interface
• Proxy Interface
IGMP Global Configuration
Use the IGMP Global Configuration
page to set IGMP on the system to active or inactive.
To display the page, click IPv4 Multicast
→
IGMP
→
Global Configuration in the tree view.
Figure 12-14. IGMP Global Configuration
The IGMP Global Configuration page contains the following field:
•
Admin Mode
— Select Enable or Disable from the drop-down menu to set the administrative status
of IGMP in the router to active or inactive. The default is Disable.
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