N-Tron 700 Series User Manual & Installation Manual

Also see for 700 Series: Features User manual & installation guide

Contents

N-Tron 700 Series User Manual & Installation Manual Manual pdf 17 page image

Revision 050908 Page 17 of 101Snooping is configured via the web console and if enabled, operates dynamically upon each power up.Also, there can be manual only or manual and dynamic operation. Note that “static multicast groupaddress” can be used whether IGMP Snooping is enabled or not.IGMP Snooping will function dynamically without user intervention. If some of the devices in the LAN donot understand IGMP, then manual settings are provided to accommodate them. The Internet GroupManagement Protocol (IGMP) is a protocol that provides a way for a computer to report its multicast groupmembership to adjacent ‘routers’. In this case N-Tron 708 series switches provide router-like functionality.Multicasting allows one computer to send content to multiple other computers that have identifiedthemselves as interested in receiving the originating computer's content. Multicasting can be used totransmit only to an audience that has joined (and not left) a multicast group membership. IGMP version 2 isformally described in the Internet Engineering Task Force (IETF) Request for Comments (RFC) 2236.IGMP version 1 is formally described in the Internet Engineering Task Force (IETF) Request for Comments(RFC) 1112. The 708 series supports v1 and v2.N-RingN-Ring is enabled by default, and the switch is Plug and Play for N-Ring except that initially one mustenable an N-Ring enabled device to be the N-Ring Manager for a given N-Ring. Subsequently, N-Ringoperates dynamically upon each power up. Using N-Tron's proprietary N-Ring technology offers expandedring size capacity, detailed fault diagnostics, and a standard healing time of 30ms. The N-Ring Managerperiodically checks the health of the N-Ring via health check packets. If the N-Ring Manager stopsreceiving the health check packets, it times out and converts the N-Ring to a backbone within 30ms. Whenusing all N-Ring enabled switches in the ring, a detailed ring map and fault location chart is also providedon the N-Ring Manager’s web browser. N-Ring status is also sent from the N-Ring Manager to the N-ViewOPC Server to identify the health status of the ring. Up to 250 N-Ring enabled switches can participate inone N-Ring topology. Switches that do not have N-Ring capability may be used in an N-Ring, however thering map and fault location chart cannot be as detailed at these locations.