SICOM3004/SICOM3006 User’s Manual 201105
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SICOM3004/SICOM3006 series can configure the TX and RX rate of all ports via the management
software. For port of 100Mbps, it can be set as 128K, 256K, 512K, 1M, 2M, 10M, 50M, 100M.
Static
Multicast
Communication
Adding multicast users by the way of manually adding static multicast table, compared to dynamic
multicast, is more simple, reliable and faster without the need of protocols. The multicast data can
be forwarded by configuring static multicast forwarding tables. Users can manually configure the
multicast communication according to their own requirements. Static multicast communication
cannot be used with IGMP simultaneously.
IGMP
IGMP is Internet Group Multicast Protocol. SICOM3004/SICOM3006 series offers IGMP
monitoring and query functions. Data packets can be transmitted to multi necessary host
computers and prevent overloading. It solves the problems of bandwidth occupation when
broadcasting.
Broadcast
Storm
Control
When too much broadcast packets are transmitted in the network, they will take up so much
bandwidth that cause a network timeout. It is called network storm. SICOM3004/SICOM3006
support broadcast data packets, multicast data packets and broadcast storm control and discard
the broadcast data packets that exceed user’s time limit setting.
DT
Ring
DT‐Ring is Kyland’s proprietary communication protocol. It determines the state of ring & port by
inspecting the ring port state, so as to ensure the redundant network won’t form a ring and
achieve a fast and reliable Ethernet redundant ring to meet the high requirements of industrial
communications.
DT
Ring+
DT‐Ring+, based on DT‐Ring, is also Kyland’s proprietary communication protocol which is to
make a backup between two rings and determine ring & port state by the ID of backup device so
as to ensure the redundant network won’t form a ring. This function guarantees a fast and reliable
redundant ring to meet high requirements in the field of industrial communication.
RSTP
SICOM3004/SICOM3006 has RSTP and STP functions which offer network redundancy protection
for the switch’s network. RSTP can achieve all functions of STP with an extra function of reducing
