INS_CNXE2GE2TX8MSPOE 11 Jan 2021 PAGE 34
INSTALLATION AND OPERATION MANUAL
CNXE2GE2TX8MSPOE
TECH SUPPORT: 1.888.678.9427
5.3.5 Bridge Status
Review STA information on the global bridge such as the switch and individual ports.
Label
Description
MSTI
Indicates the bridge instance.
Bridge ID
A unique identifier for this bridge, consisting of the bridge priority, and MAC
address (where the address is taken from the switch system).
Root
Root ID: A unique identifier of the device in the Spanning Tree that this switch
has been accepted as the root device, consisting of the priority and MAC
address.
Root Port: the number of the port on this switch that is closest to the root. This
switch communicates with the root device through this port. If no root port is
designated, it means this switch has been accepted as the root device of the
Spanning Tree network.
Root Cost: the path cost from the root port on this switch to the root device.
The cost for the root bridge is zero. For all other bridges, it is the sum of the
port path costs on the least cost path to the root bridge.
Technology Flag
The current state of the Topology Change Notification flag (TCN) for this
bridge instance.
Technology Change Last Time since the Spanning Tree was last reconfigured.
Click on CIST to expand the following information window. Regional Root is the bridge ID of the
designated regional root bridge, inside the MSTP region of this bridge. Internal Root Path is the
path cost regional root path cost. The cost for the Regional Root Bridge is zero, and for all other
CIST instances in the same MSTP region, it is the sum of the Internal Port Path Costs on the least
cost path to the Internal Root Bridge. Note that these parameters only apply to the CIST instance.
