5-Port Ring-Redundant Ethernet Switch

New CyberResearch® ESW 405 ring-redundant 10/100Mbps Ethernet switches read the header frame of each Ethernet packet, so they know how and where to forward it. This capability both provides redundancy and increase available bandwidth.

Rugged DIN-mount ESW 405 switches from CyberResearch, Inc. come with a heavy-duty aluminum case (ESW 405M) or an industrial plastic case (ESW 405P). Both styles are functionally identical and include five RS-45 Ethernet ports, as well as an RS-232/485 port on a single RS-45 connector, so you can communicate with both serial and Ethernet devices or peripheral switches. Each ESW 405 switch has two independent DC power supplies for enhanced reliability. Legends printed on the sides of the cases give switch settings and LED meanings.

One limitation of conventional Ethernet networks is that line breaks cut off contact with downstream devices. As shown, in the diagram below, CyberResearch ESW 405 switches detect a break in the ring and route relevant signals around it. More rings provide more protection. Double rings protect against a simultaneous single break in each ring. Contact CyberResearch for additioanl ways to use ESW 405 Ethernet switches to provide redundancy.

Single Redundant Ring with One Master Switch
Single ring is formed by three or more ESW 405 redundant switches, peripherals switches can be cost-effective ESW 205P or ESW 208P models.

Dual Independant Rings with Only a Single Master Switch
One ESW 405 switch can supprt two independent Ethernet rings.

Linked Rings for Dual Redundancy
Any switch can address any other switch in either ring, as long as there are no more than one link break in each ring.