User`s manual

IKS-6726 Featured Functions
3-35
Protocol of Redundancy
Setting Description Factory Default
Turbo Ring This selects the Turbo Ring protocol. None
RSTP (IEEE
802.1w/1D)
This selects the RSTP protocol. None
Bridge Priority
Setting Description Factory Default
Numerical value
selected by user
This specifies the IKS-6726’s bridge priority. A lower number
means a higher priority, which means a greater chance of being
established as the root of the Spanning Tree topology.
32768
Forwarding Delay
Setting Description Factory Default
Numerical value input
by user
This specifies the amount of time this device will wait before
checking to see if it should change to a different state.
15 (sec.)
Hello Time (sec.)
Setting Description Factory Default
Numerical value input
by user
This specifies the time interval between “hello” messages
broadcast by the root of the Spanning Tree topology. The
“hello” message is used to check if the topology is healthy.
2
Max. Age (sec.)
Setting Description Factory Default
Numerical value input
by user
This specifies the amount of time to wait for a “hello” message
from the root before the IKS-6726 will reconfigure itself as a
root. When two or more devices on the network are recognized
as a root, the devices will renegotiate to set up a new Spanning
Tree topology.
20
Enable STP per Port
Setting Description Factory Default
Enable/Disable This includes the selected port as a node on the Spanning Tree
topology.
Disabled
NOTE We suggest that you disable the Spanning Tree Protocol for ports that are connected directly to a device (PLC,
RTU, etc.) as opposed to network equipment. This will prevent unnecessary negotiation.
Port Priority
Setting Description Factory Default
Numerical value
selected by user
This specifies the port’s priority as a node on the Spanning Tree
topology. Lower values correspond to higher priority.
128
Port Cost
Setting Description Factory Default
Numerical value input
by user
This specifies the port cost. Higher costs correspond to lower
suitability as a node for the Spanning Tree topology.
200000
Port Status
Indicates the current Spanning Tree status of this port. Forwarding indicates normal transmission and
Blocking indicates blocked transmission.