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In Internet Group Management Protocol (IGMP), multicast router sends IGMP Queries to all its IGMP enabled ports. The hosts interested in a particular multicast traffic (a particular IP TV Channel or a multicast stream) will send IGMP Join message for that multicast group. To stop receiving traffic from a multicast group, the host sends an IGMP Leave message. The join and leave messages for a multicast group will be forwarded only to router ports.
To view the IGMP profiles, go to Configuration > Layer 2 > Management Profiles menu and click IGMP Snooping option. IGMP Snooping page is displayed.
The IGMP Snooping page consists of FDFR Profiles tab and FDFR End Points Profiles tabs.
IGMP FDFR Profiles
Parameter |
Description |
|---|---|
Name |
Displays the name of the IGMP Snooping profile. |
Profile Mode |
Displays the status of IGMP Snooping mode as enabled/ disabled/ proxy/ querier. |
Enable Query |
Displays the query on topology change is enabled or disabled. |
Query Interval |
Displays the frequency at which IGMP Host-Query packets are transmitted on a specific interface. |
Query Response Interval |
Displays the response interval advertised in IGMPv2 queries on a specific interface. |
Robustness Variable |
Displays a value that defines the expected packet loss on a subnet. If a subnet is expected to have a lot of loss, the Robustness variable may be increased for that interface. |
Startup Query Interval |
Displays the interval between General Queries sent by a Querier on startup. |
Startup Query Count |
Displays the number of Queries sent out on startup, separated by the Startup Query Interval. |
Last Member Query Interval |
Displays the Maximum Response Time inserted into Group-Specific Queries sent in response to Leave Group messages. |
Last Member Query Count |
Displays the number of Group-Specific Queries sent before the router assumes that there are no local members. |
Unsolicited Report Interval |
Displays the time interval at which the IGMP Proxy interface sends unsolicited group membership report. |
The following parameters are displayed for the selected profile and also for those profile which matches the selected profile. |
|
EMS Name |
Displays the EMS name where the selected profile is used. |
Node IP |
Displays the node IP where the selected profile is used. |
Slot No |
Displays the slot number in the node where the selected profile is used. |
Profile Name |
Displays the name of the profile for the selected profile. |
IGMP FDFR End Points Profiles
Parameter |
Description |
|---|---|
Name |
Displays the name of the IGMP profile. |
MultiCast Rtr Mode |
Displays the selected mode as Static or Dynamic. |
Immediate Leave Mode |
Displays the status of Immediate leave mode as Enable or Disable. |
Handle Unknown MultiCast |
Displays the selected option as Flood or Drop. |
The following parameters are displayed for the selected profile and also for those profile which matches the selected profile. |
|
EMS Name |
Displays the EMS name where the selected profile is used. |
Node IP |
Displays the node IP where the selected profile is used. |
Slot No |
Displays the slot number in the node where the selected profile is used. |
Profile Name |
Displays the name of the profile for the selected profile. |
Filtering Options
IGMP profiles can be searched by enabling the Show inline filtering where the filtering option is displayed against each attribute on IGMP Snooping page. The user can perform a search based on the desired attribute. Select the desired criteria from drop-down option provided against each parameter. The filtered IGMP profiles will be displayed.