User manual

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Cooper Bussmann 2080E-T Managed Ethernet Switch User Manual
47Rev Version 1.0
Root Port The port used to connect to the root switch. This port has the lowest root path cost.
Root Path Cost Indicates how suitable this port is as a node for the Spanning Tree topology. A lower
value indicates greater suitability.
Max Age Time The number of seconds that this device waits before checking to see if it should
change to a different state.
Hello Time The time interval (in seconds) at which the switch sends out the BPDU packet to
check the RSTP status.
Forward Delay Time The number of seconds a port waits before changing from Rapid Spanning Tree
Protocol learning and listening states to the forwarding state.
6.5.5 Redundancy - Pro-Ring2se
To configure Pro-Ring2se function on the 2080E-T Switch, choose Configure-->Redundancy-->Pro-Ring2se. For
examples of Pro-Ring2se connection options, see “4.1 Pro-Ring2se Application.”
Figure 47 Pro-Ring2se
Pro-Ring2se
Protocol
Enable or disable the Pro-Ring2se function.
Mode
Master/Slave
At least one switch must play the role of ring master switch in a ring topology. The
ring master switch is responsible for checking the connections in a ring topology.
Checking ring connections is performed by sending a BPDU packet every 10 ms
across the ring from master switch.
NOTE Additional switches can take the role of master switch. In this
case, multiple switches can be redundant with each other. However, it is
recommended that you not set too many switches as master switch because
resources are consumed to negotiate the selection of the primary master
switch.
Primary Port
Secondary port
Any two ports from a switch can be chosen to build the ring topology.