Network redundancy – Comtrol ES7528 User Manual
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RocketLinx ES7528 User Guide: 2000509 Rev. C
Network Redundancy - 79
Configuration Using the Web Interface
Network Redundancy
It is critical for industrial applications that the network remains running at all times. The ES7528 supports:
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Standard Rapid Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)
The ES7528 supports RSTP versions IEEE 802.1D-2004, IEEE 802.1D-1998 STP, and IEEE 802.1w
RSTP.
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Multiple Spanning Tree Protocol (MSTP)
MSTP implements IEEE 802.1s, which uses RSTP for rapid convergence, enables VLANs to be grouped
into a spanning-tree instance, with each instance having a spanning-tree topology independent of other
spanning-tree instances. This architecture provides multiple forwarding paths for data traffic, enables
load balancing, and reduces the number of spanning-tree instances required to support a large number of
VLANs. MSTP was originally defined in the IEEE 802.1s and later merged into the IEEE 802.1Q-2003
specification.
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Redundant Ring
The Redundant Ring features 0 ms for restore and less than 5 ms for fail over for copper.
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Rapid Dual Homing (RDH)
Advanced RDH technology allows the ES7528 to connect with a core managed switch easily. With RDH
technology, you can also couple several Rapid Super Rings or RSTP groups together, which is also known
as Auto Ring Coupling.
The following pages are included in this group:
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Optionally, you can use the CLI to configure these features, see