User guide

IGMP snooping Functional Differences in Product Categories
iMG/RG Software Reference Manual (IGMP)
3-16
It is possible to statically define the upstream IP interface.
3.1.4 Functional Differences in Product Categories
There are two different implementations of IGMP that are encountered in these ATI Gateways. The original
implementation is configured using IGMP SNOOPING and IGMP PROXY commands. It is a separate applica-
tion that IGMP packets are sent to - and is not integrated with the Bridge - that is an integral part of the Packet
processing on the CPU. The newer implementation is configured using BRIDGE IGMPSNOOP and IGMP com-
mands.It is integrated into the CPU based Bridge - which supports VLAN segregation of traffic flows.
In addition the IGMP PROXY commands have been superseded by the IGMP commands that are now available
to manage Routed IGMP Proxy. The IGMP PROXY commands are retained in older devices for backward com-
patibility - but are not recommended.
1) Utilizes IGMP SNOOPING command set. IGMP Command set recommended in place of IGMP PROXY
command set.
2) Utilizes integrated BRIDGE IGMPSNOOP and the IGMP command set.
3.1.5 IGMP Snooping command reference
This section describes the commands available to enable, configure and manage the IGMP snooping feature.
TABLE 3-1 Functional Mapping for Bridge
Functions
Fiber
A
Fiber
B
Fiber
C
Fiber
D
Fiber
E Modular
ADSL
A
ADSL
B
ADSL
C
Multicast router port discovery
1 2122 2 1 2 2
Joining a Multicast Group
1 2122 2 1 2 2
Leaving a multicast group
1 2122 2 1 2 2
Multicast router port discovery
1 2122 2 1 2 2
Proxy Operation Mode
1 2122 2 1 2 2
IP source address masking – Secondary IP Interface
1 2122 2 1 2 2
IGMP snooping security
1 2122 2 1 2 2
Routed IGMP proxy
1 2122 2 1 2 2