Korenix managed Ethernet switch has dual homing technology

July 20, 2006 - As a network expands to connect many devices together, Ethernet redundancy becomes more critical. Korenix Dual homing technology in JetNet 4508 and 4508f managed switches, provides the most flexible solution to let different brands of Ethernet devices connect together and keep a redundant Ethernet working in fast recovery. In many enterprise level applications, users choose a chassis switch as their backbone switch, or select Cisco switches to connect in an upper ring. The benefit of a chassis L3 switch is it can setup IP interfaces and route different IP subnets. It has high ports and provides different modules, copper or fiber to meet demand in various media interface. The modules also can be hot swapped and backup each other. Most of the L3 switches and Cisco switches use standard Rapid Spanning Tree Protocol (RSTP) as Ethernet redundancy solution. The switches and ring redundancy protocol in the upper ring will be always considered as first priority over edge rings or edge switches. So, how to be compatible and work with the different upper ring redundancy protocol is very important for an edge managed switch. By connecting the Dual Homing switches to one of the modules, the 2 ports can backup each other. In such environments, it always requests to separate the Super Rings from different VLANs or IP subnets. The 2 Super Rings can be virtually separated easily and the different VLANs/subnets can be routed by the IP interfaces. Dual homing provides an advanced redundancy network solution by connecting switches running in different redundant protocols (e.g. IEEE 802.1w Rapid Spanning Tree Protocol and Super Ring) to extend the network redundant coverage.Redundancy is achieved by connecting two ports from two separate switches using Super Ring protocol with two ports of Managed Switches using other redundancy protocol (please see Figure 1 and Figure 2). An active link where data is transmitted is connected with one port in the switch. The other port connected with another switch is a hot standby link. Constantly monitoring the hot standby link and will switch over in seconds once the active link is disconnected or breaks.About Korenix TechnologyKorenix Technology is committed in design and manufacturing industrial communications products, which can be used in various markets that requires high stability or for industrial field environments, such as POS, banking, telecom, transportation, industrial automation, energy, power, military, and medical fields.Korenix has 4 major product lines: JetNet Series Industrial Managed and Unmanaged Redundant Ethernet Rail Switch, JetCon Series Industrial Serial/Ethernet/Fiber Media Converter, JetCard Series Multiport Serial Card, and JetPort Series RS-232/422/485 3-in-1 Device Server. Korenix is committed to provide quality products to our customers. Various safety approvals, such as EMI, EMC, EMS, UL, cUL, are applied to all Korenix products. All Korenix products have 5 years global warranty through worldwide service centers. For customers’ specific application requirements, Korenix also provide tailor-made services. Korenix listens to customers’ voices, designs professional products, and provides comprehensive services to make Korenix a reliable partner for global users.

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