Cisco SPS208G User Manual page 205

Spanning Tree
MSTP Interface Settings
SPS208G/SPS224G4/SPS2024 Service Provider Switches User Guide
The MSTP Interface Parameters area contains the following fields:
•
Instance ID — Lists the MSTP instances configured on the device. Possible
field range is 0-7.
•
Interface — Define the port or LAG of this MSTP configuration. The
possible field values are:
-
Unit No.
— Indicates the stacking member on which this MSTP
configuration is defined.
-
Port
— Indicates the port on which this MSTP configuration is defined.
-
LAG
— Indicates the LAG on which this MSTP configuration is defined.
•
STP Port Status — Enables or disables STP on the interface. The possible
field values are:
-
Enable
— Indicates that STP is enabled on the interface.
-
Disable
— Indicates that STP is disabled on the interface.
•
Port State — Indicates the MSTP status on the specific port. The possible
field values are:
-
Disabled
— Indicates that STP is currently disabled on the port or if the
port is not active. The port forwards traffic while learning MAC
addresses.
-
Blocking
— Indicates that the port is currently blocked and cannot
forward traffic or learn MAC addresses.
-
Listening — Indicates that the port is in Listening mode. The port cannot
forward traffic nor can it learn MAC addresses.
-
Learning
— Indicates that the port is in Learning mode. The port cannot
forward traffic, however it can learn new MAC addresses.
-
Forwarding
can forward traffic and learn new MAC addresses.
•
Type — Indicates if the port is a point-to-point port, or a port connected to a
hub. The possible field values are:
-
Boundary Port
attaches MST bridges to LAN in an outlying region. If the port is a
boundary port, it also indicates whether the device on the other side of
the link is working in RSTP or STP mode
— Indicates that the port is in Forwarding mode. The port
— Indicates the port is a boundary port. A Boundary port
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