Brocade Communications Systems IPMC5000PEF manual Supported IPv4 Multicast Traffic Reduction

IPv4 Multicast Traffic Reduction

● Supported IPv4 Multicast Traffic Reduction	13
● IGMP snooping overview	13
● IGMP snooping configuration	17
● IGMP snooping show commands	26
● Clear commands for IGMP snooping	34

●Disabling the flooding of unregistered IPv4 multicast frames in an IGMP-snooping-

enabled VLAN	35
● PIM SM traffic snooping overview	35
● PIM SM snooping configuration	38
● PIM SM snooping show commands	39

Supported IPv4 Multicast Traffic Reduction

The following table lists the individual Brocade FastIron switches and the IPv4 multicast traffic reduction features they support. These features are supported in the Layer 2 and Layer 3 software images, except where explicitly noted.

Feature	ICX 6430	ICX 6450	FCX	ICX 6610	ICX 6650	FSX 800	ICX 7750
						FSX 1600
IGMP v1/v2/v3 snooping (global and	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.10
local)
IGMP fast leave for v2	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.10
IGMP membership tracking and fast	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.10
leave for v3
PIM-SM v2 Snooping	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.10
Static IGMP groups with support for	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	08.0.10
proxy
IGMP static group traffic filtering	08.0.01	08.0.01	08.0.01	08.0.01	08.0.01	No	No

IGMP snooping overview

When a device processes a multicast packet, by default, it broadcasts the packets to all ports except the incoming port of a VLAN. Packets are flooded by hardware without going to the CPU. This behavior causes some clients to receive unwanted traffic.

IGMP snooping provides multicast containment by forwarding traffic to only the ports that have IGMP receivers for a specific multicast group (destination address). A device maintains the IGMP group

FastIron Ethernet Switch IP Multicast Configuration Guide	13
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