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CHAPTER 8: MULTICAST
FIGURE 8-4. IGMP SNOOPING GROUP INFORMATION
PARAMETER DESCRIPTION
Navigating the IGMP Group Table
Each page shows up to 99 entries from the IGMP Group table, default is 20, selected through the “entries per page” input field. When
first visited, the web page will show the first 20 entries from the beginning of the IGMP Group Table.
The “Start from VLAN”, and “group” input fields allow the user to select the starting point in the IGMP Group Table. Clicking the
Refresh button will update the displayed table starting from that or the closest next IGMP Group Table match. In addition, the two
input fields will—upon a Refresh button click—assume the value of the first displayed entry, allowing for continuous refresh with the
same start address.
The Next Page will use the last entry of the currently displayed table as a basis for the next lookup. When the end is reached the text
“No more entries” is shown in the displayed table. Use the First Page button to start over.
Show entries: You can choose how many items you want to show up.
VLAN ID: VLAN ID of the group.
Groups: Group address of the group displayed.
Port Members: Ports under this group.
Buttons
Auto-refresh: Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
Refresh: Click to refresh the page immediately.
First Page: Updates the system log entries, turn to the first page.
Next Page Updates the group information entries, turn to the next page.
8.1.5 IGMP SFM INFORMATION
Entries in the IGMP SFM Information Table are shown on this page. The IGMP SFM (Source-Filtered Multicast) Information Table
also contains the SSM (Source-Specific Multicast) information. This table is sorted first by VLAN ID, then by group, and then by Port.
Different source addresses belong to the same group are treated as single entry.
