Igmp - Funkwerk W1002 Manual

Funkwerk Enterprise Communications GmbH
bintec W1002/W1002n/W2002/WIx040/WIx065
Field
Multicast Group Address Only for All Multicast-Groups = disabled
Source Interface
Destination Interface

12.5.2 IGMP

IGMP (Internet Group Management Protocol, see RFC 3376) is used to signal the informa-
tion about group (membership) in a subnet. As a result, only the packets explicitly wanted
by a host enter the subnet.
Special mechanisms ensure that the requirements of the individual clients are taken into
consideration. At the moment there are three versions of IGMP (V1 - V3); most current sys-
tems use V3, and less often V2.
Two packet types play a central role in IGMP: queries and reports.
Queries are only transmitted from a router. If several IGMP routers exist in a network, the
router with the lowest IP address is the "querier". We differentiate here between a general
query (sent to 224.0.0.1), a group-specific query (sent to a group address) and the group-
and-source-specific query (sent to a specific group address). Reports are only sent by
hosts to respond to queries.
In this menu, you configure the interfaces on which IGMP is to be enabled.
12.5.2.1 New
Choose the New button to configure IGMP on other interfaces.
Description
this, check Enabled
Disable the option if you only want to forward one defined mul-
ticast group to a particular interface.
The option is deactivated by default.
Enter here the address of the multicast group you want to for-
ward from a defined Source Interface to a defined Destination
Interface
Select the interface on your device to which the selected multic-
ast group is sent.
Select the interface on your device to which the selected multic-
ast group is to be forwarded.
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