Cisco Linksys SFE1000P Reference Manual page 138

– Forwarding — Indicates that the port is in Forwarding mode. The port 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 — Indicates the port is a boundary port. A 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
– Master Port — Indicates the port is a master port. A Master port provides connectivity
from a MSTP region to the outlying CIST root.
– Internal — Indicates the port is an internal port.
• Role — Indicates the port role assigned by the STP algorithm in order to provide to STP
paths. The possible field values are:
– Root — Provides the lowest cost path to forward packets to root device.
– Designated — Indicates the port or LAG via which the designated device is attached to
the LAN.
– Alternate — Provides an alternate path to the root device from the root interface.
– Backup — Provides a backup path to the designated port path toward the Spanning
Tree leaves. Backup ports occur only when two ports are connected in a loop by a point-
to-point link. Backup ports also occur when a LAN has two or more connections
connected to a shared segment.
– Disabled — Indicates the port is not participating in the Spanning Tree.
• Mode — Indicates the current Spanning Tree mode. The possible field values are:
– Classic STP — Indicates that Classic STP is enabled on the port.
– Rapid STP — Indicates that Rapid STP is enabled on the port.
• Interface Priority — Defines the interface priority for specified instance. The default value is
128.
• Path Cost — Indicates the port contribution to the Spanning Tree instance. The range should
always be 1-200,000,000.
• Designated Bridge ID — Indicates that the bridge ID number that connects the link or shared
LAN to the root.
• Designated Port ID — Indicates that the Port ID number on the designated bridge that
connects the link or the shared LAN to the root.
• Designated Cost — Indicates that the default path cost is assigned according to the method
selected on the Spanning Tree Global Settings page.
Chapter 11: Configuring Spanning Tree
Defining Multiple Spanning Tree
SFE1000P Gigabit Ethernet Switch Administration Guide
Chapter
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