Network Redundancy - Comtrol ROCKETLINX ES8508 User Manual

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Configuration Using the Web Interface

Network Redundancy

It is critical for industrial applications that the network remains running at all times. The ES8508 supports:
Standard Rapid Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)
The ES8508 supports RSTP versions IEEE 802.1D-2004, IEEE 802.1D-1998 STP, and IEEE 802.1w
RSTP.
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.
Redundant Ring
The Redundant Ring features 0 ms for restore and less than 5 ms for fail over for copper.
Rapid Dual Homing (RDH)
Advanced RDH technology allows the ES8508 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:
STP Configuration
STP Port Configuration
STP Information
on Page 79
MSTP Configuration
MSTP Port Configuration
MSTP Information
Redundant Ring
on Page 86
Redundant Ring Information
Loop Protection
on Page 88
Optionally, you can use the CLI to configure these features, see
76 - Network Redundancy
on Page 77
on Page 78
on Page 81
on Page 83
on Page 84
on Page 87
Network Redundancy (CLI)
RocketLinx ES8508 Series User Guide: 2000575 Rev. A
on Page 155.

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