If multicast is required for your network, please note that most out-of-the-box Ethernet switches are not configured to properly support it. When choosing an Ethernet switch, it is important to ensure the switch can support IGMP (Internet Group Multicast Protocol) snooping version 2. It is also important to remember that an IGMP querier is needed in each virtual local area network (VLAN). IGMP Query is normally supported by routers or high-end layer-3 switches.
IGMP is a session-layer (IP, layer-3) protocol used to establish membership in a multicast group. There are three versions of IGMP, with version 2 being the most widely used. Nextiva VMS supports version 2.
Using multicast in an improperly-configured network or over a network that does not support multicast will result in a multicast flood. Flooding can also occur if the IGMP querier loses power or drops its network connection.
Multicast traffic is blocked by most firewalls, VPN, and Internet routers; therefore multicast is generally applicable only to private networks. Multicast can be routed across multiple subnets using multicast routers supporting PIM (Protocol Independent Multicast). Although Nextiva VMS supports both IGMP and PIM, PIM is the recommended multicast routing protocol.
Also known as: VE-NEX24DPOE, NEX24DSWMPOE
For more information about the Verint Systems NEX-24-DSWM-POE, please
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