Chapter 16
| Multicast Filtering
MLD Snooping (Snooping and Query for IPv6)
– 501 –
Showing MLD
Snooping Groups
and Source List
Use the Multicast > MLD Snooping > Group Information page to display known
multicast groups, member ports, the means by which each group was learned, and
the corresponding source list.
Parameters
These parameters are displayed:
◆ VLAN – VLAN identifier. (Range: 1-4094)
◆ Interface – Port or trunk identifier.
◆ Group Address – The IP address for a specific multicast service.
◆ Type – The means by which each group was learned – MLD Snooping or
Multicast Data.
◆ Filter Mode – The filter mode is used to summarize the total listening state of a
multicast address to a minimum set such that all nodes' listening states are
respected. In Include mode, the router only uses the request list, indicating that
the reception of packets sent to the specified multicast address is requested
only from those IP source addresses listed in the hosts’ source-list. In Exclude
mode, the router only both the request list and exclude list, indicating that the
reception of packets sent to the given multicast address is requested from all IP
source addresses, except for those listed in the exclude source-list and for any
other sources where the source timer status has expired.
◆ Filter Timer Elapse – The Filter timer is only used when a specific multicast
address is in Exclude mode. It represents the time for the multicast address
filter mode to expire and change to Include mode.
◆ Request List – Sources included on the router’s request list.
◆ Exclude List – Sources included on the router’s exclude list.
Web Interface
To display known MLD multicast groups:
1. Click Multicast, MLD Snooping, Group Information.
2. Select the port or trunk, and then select a multicast service assigned to that
interface.
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