Configuring Spanning Tree
MSTP Configurations
Configuration Guide
219
Status
Enable or disable spanning tree function on the desired port.
Priority
Enter the value of port priority from 0 to 240 divisible by 16, and the default
value is 128.
The port with the lower value has the higher priority. In the same condition,
the port with the highest priority will be elected as the root port in CIST.
Ext-Path Cost
Enter the value of the external path cost. The default setting is Auto, which
means the port calculates the path cost automatically according to the port’s
link speed.
External path cost is the path cost of the port in CST. The port with the
lowest external root path cost will be elected as the root port in CIST
Int-Path Cost
Enter the value of the internal path cost. The default setting is Auto, which
means the port calculates the path cost automatically according to the port’s
link speed.
Internal path cost is the path cost of the port in IST. The port with the lowest
internal root path cost will be elected as the root port in IST.
Edge Port
Enable or disable Edge Port. By default, it is disabled.
The edge port can transit its state from blocking to forwarding directly. If the
port is connected to an end device, like a PC, it is recommended to set the
port as an edge port.
P2P Link
Select the P2P link status. If the two ports in the P2P link are a root port and a
designated port, they can transit their states to forwarding directly.
Three options are supported: Auto, Open(Force) and Close(Force). By
default, it is Auto.
Auto
: The switch automatically detects if the port is connected to a P2P link,
then determines the status is Open or Close.
Open(Force)
: The port is manually identified as connected to a P2P link.
Close(Force)
: The port is manually identified as not connected to a P2P link.
MCheck
Select whether to do MCheck operation on the port. Unchange means no
MCheck operation.
If a port on an MSTP-enabled device is connected to a STP/RSTP-enabled
device, the port switches to the STP/RSTP compatible mode. If the STP/
RSTP-enabled device is powered off or disconnected from the MSTP-
enabled device, the port cannot switch back to MSTP mode. In this case, you
can switch the port to MSTP mode by enabling MCheck operation.
Port Mode
Displays the spanning tree mode of the port.
Содержание TL-SG2424
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