M A G N U M 6 K S W I T C H E S , M N S - 6 K U S E R G U I D EWith IGMP-L2 enabled on all Magnum 6K family of switches, this situation as shown above isprevented. This is explained in the figure below.R1 R2R3 R4R5R6T1T1T2T2 L2 ModeL2 ModeL2 ModeL2 ModenoFIGURE 121 - Using IGMP-L2 on Magnum 6K family of switches, a Layer 2 network can minimize multicasttraffic as shown above. Each switch has the IGMPL2 turned on. Each switch can exchange the IGMP querymessage and respond properly. R4 wants to view surveillance traffic from T1. As shown by (1), a join request issent by R4. Once the join report information is exchanged, only R4 receives the video surveillance traffic, as shownby (2). No other device on the network gets the video surveillance traffic unless they issue a join request as well.220
