Managed Ethernet Switches are offered with IGMP snooping.
Press Release Summary:
Available with 5-24 ports in copper or copper/fiber combinations, EISX_M, EICP_M, and EISB_M Series are available with IGMP (Internet Group Management Protocol) snooping. IGMP ensures group multicast traffic is forwarded to group member ports of switches and automatically ages out all learned multicast-port associations for devices which stop responding to query messages. Switches can also function as query device for network, allowing network to operate without router.
Original Press Release:
IGMP Snooping Makes Networks Easy to Manage
Downers Grove, Illinois (August 15, 2005) - Contemporary Controls now offers IGMP snooping (Internet Group Management Protocol) as part of the rich set of features designed in the company's managed Industrial Ethernet switches (the EISX_M, the EICP_M, and the EISB_M Series). "IGMP snooping is critical for today's EtherNet/IP, IP video, and other networks which utilize a high number of multicast messages," says Bennet Levine, R&D Manager for Contemporary Controls.
Levine says IGMP snooping is important in large EtherNet/IP networks. "EtherNet/IP devices use multicast messages for their real-time data," he explains. "Without this feature, messages sent to a few devices would be treated much like broadcast traffic, forwarded to all ports. With IGMP snooping, the group multicast traffic is only forwarded to the group member ports of our switches. These switches are available from 5 to 24-port count with copper or copper/fiber combinations."
Furthermore, IGMP snooping automatically ages out all learned multicast-port associations for devices which stop responding to query messages. This is especially helpful when devices are relocated from one port on the switch to another. This eliminates unwanted multicast messages flowing to ports where the devices are no longer connected.
The company's managed Ethernet switches can also function as the query device for the network, allowing the network to operate without a router. This saves money, reduces Bill Of Materials and complexity.
The switches meet tough environmental conditions and operate over wide temperature ranges, either from 0º to 60º and -40º to +75ºC. Common applications include commercial and private buildings, urban traffic intersections and in transportation facilities such as airports.
For more information on our managed Ethernet switches which are marketed under the CTRLink(R) trade name visit our website www.ctrlink.com.
