Table of Contents
Advertisement
Network Redundancy
It is critical for industrial applications that the network remains running at all times. The RocketLinx ES7506 supports:
•
Standard Rapid Spanning Tree Protocol (STP and RSTP)
The RocketLinx ES7506 supports RSTP versions IEEE 802.1D-2004, IEEE 802.1D-1998 STP, and IEEE 802.1w RSTP.
•
Redundant Ring
The Redundant Ring features 0 ms for restore and about 5 ms for fail over for copper.
•
Rapid Dual Homing (RDH)
Advanced RDH technology facilitates the RocketLinx ES7506 to connecting with a core managed switch easily and
conveniently. 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 commands are included in this group:
•
RSTP
on Page 59
•
RSTP Information
on Page 61
•
Redundant Ring
on Page 62
•
Redundant Ring Information
•
Command Lines for RSTP
RSTP
If a switch has more than one path to a destination, it leads to
message loops that can generate broadcast storms and quickly bog
down a network.
The spanning tree was created to combat the negative effects of
message loops in switched networks. A spanning tree uses a
spanning tree algorithm (STA) to automatically sense whether a
switch has more than one way to communicate with a node. It then
selects the best path (primary), and blocks the other paths. It also
keeps track of the blocked paths in case the primary path fails.
Spanning Tree Protocol (STP) introduced a standard method to
accomplish this. It is specified in IEEE 802.1D-1998. Later, Rapid
Spanning Tree Protocol (RSTP) was adopted and represents the
evolution of STP, providing much faster spanning tree convergence
after a topology change. This is specified in IEEE 802.1w. In 2004,
IEEE 802.1w is included into the IEEE 802.1D-2004 version. This
switch supports both RSTP and STP (all switches that support
RSTP are also backward compatible with switches that support only
STP).This page allows you to enable/disable RSTP, configure the
global setting and port settings.
Network Redundancy
on Page 63
on Page 64
Network Redundancy
RocketLinx ES7506 User Guide: 2000529 Rev. E - 59
Advertisement
Table of Contents
