Network Redundancy - Comtrol ROCKETLINX ES8509-XT User Manual

Network Redundancy

It is critical for industrial applications that the network remains running at all times. The ES8509-XT
supports:
• Standard Rapid Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP)
The ES8509-XT 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 ES8509-XT 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 76
• MSTP Configuration
• MSTP Port Configuration
• MSTP Information
• Redundant Ring on Page 83
• Redundant Ring Information
• Loop Protection on Page 86
Optionally, you can use the CLI to configure these features, see
RocketLinx ES8509-XT User Guide: 2000557 Rev. D
on Page 74
on Page 75
on Page 78
on Page 80
on Page 81
on Page 85
Configuration Using the Web Interface
Network Redundancy (CLI)
Network Redundancy - 73
on Page 152.