![]() Juniper EX4200 configuration # Last commit: 09:55:20 UTC by root There is also other technology for cope somehow with multicast streams - MVR, IGMP Proxy, IGMP querier configured on switch. Switch with this feature listens to IGMP (Query, Report, Leave) packets and behave according it. I am not going to provide IGMP snooping test here, but shortly, this feature helps reduce multicast traffic on LAN segment (VLAN), so that multicast stream is received only on interface/port/MC stream receiver that wants it, not on all ports. DUT could be any manageable L2 switch with IGMP snooping (with or without IGMP proxy). I use tagged interfaces on both devices EX 4200 ge-0/0/0, ge-0/0/1 and also on multicast stream server. I use BackTrack 5 or Ubuntu with VLC as video stream server/source and receivers. You should have two-way communication to get IGMP snooping operational. Simple running VLC server will not automatically listens and respond to IGMP packets from client so DUT switch will not hear and investigate IGMP snooping packets exept these from receivers (and that is not enough). Because of that, I need IGMP querier - a device that listens and sends IGMP packets. Some of feature I test is a multicast service handling by switch. ![]() I am currently testing some L2 access switches for 3play services.
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