SSM does not require group address allocation within the network, only within each source host. Different applications
running on the same source host must use different SSM groups. Different applications running on different source hosts
can arbitrarily reuse SSM group addresses without causing any excess traffic on the network.
Addresses in the range 232.0.0.0/8 (232.0.0.0 to 232.255.255.255) are reserved for SSM by IANA. In the switch, you
can configure SSM for arbitrary IP multicast addresses also.
Web Interface
To display the IGMPv3 IPv4 SSM Information in the web interface:
1. Click Configuration, IGMP Snooping, IPv4 SSM Information
2. If you want to auto-refresh the information then you need to activate “Auto-refresh”.
3. Click “Refresh“ to refresh a entry of the IGMPv3 IPv4 SSM Information.
4. Click “<< or >>“ to move to previous or next entry.
Figure 3-6.6: The IGMPv3 IPv4 SSM Information.
Parameter description:
Navigating the IGMPv3 Information Table
Each page shows up to 99 entries from the IGMPv3 SSM (Source Specific Multicast) Information table, default being 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 IGMPv3 Information Table.
The "Start from VLAN", and "group" input fields allow the user to select the starting point in the IGMPv3 Information
Table. Clicking the button will update the displayed table starting from that or the closest next IGMPv3 Information Table
match. In addition, the two input fields will - upon a button click - assume the value of the first displayed entry, allowing
for continuous refresh with the same start address.
The 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 button to start over.
IGMPv3 Information Table Columns
VLAN ID:
VLAN ID of the group.
Group:
Group address of the group displayed.
Port:
Switch port number.
Mode:
Indicates the filtering mode maintained per (VLAN ID, port number, Group Address) basis. It can be either Include or
Exclude.
Source Address:
IP Address of the source. Currently, system limits the total number of IP source addresses for filtering to be 128.
Type:
50
LANCOM GS-2310P/GS-2326(P) User Manual
3 Configuration
