Casio ISA550WBUN3K9 manual Configuring Igmp, 011, 100, Click Networking Igmp

Networking	4
Configuring IGMP

DSCP Value	Decimal Value	Meaning
010 100	20	AF22
010 110	22	AF23
011 010	26	AF31
011 100	28	AF32
011 110	30	AF33
100 010	34	AF41
100 100	36	AF42
100 110	38	AF43

Configuring IGMP

Internet Group Management Protocol (IGMP) is a communication protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships. IGMP can be used for online streaming video and gaming, and can allow more efficient use of resources when supporting these types of applications.

IGMP Proxy enables hosts that are not directly connected to a downstream router to join a multicast group sourced from an upstream network. IGMP Snooping constrains IPv4 multicast traffic at Layer 2 by configuring Layer 2 LAN ports dynamically to forward IPv4 multicast traffic only to those ports that want to receive it. IGMP Snooping runs on IGMP Version 3 that is backward compatible with the previous versions.

NOTE By default, multicast traffic from Any zone to Any zone is blocked by the firewall. When you enable IGMP Proxy and want to receive multicast packets from WAN to LAN, you must first uncheck Block Multicast Packets in the Firewall > Attack Protection page, and then create a firewall rule to permit multicast traffic from WAN to LAN. For information on configuring firewall rules to allow or deny multicast traffic, see Configuring a Firewall Rule to Allow Multicast Traffic, page 259.

STEP 1 Click Networking > IGMP.

The IGMP window opens.

Cisco ISA500 Series Integrated Security Appliances Administration Guide 172