Huawei Quidway S1700 Series User Manual

Quidway S1700 Series Ethernet Switches
Web User Manual 7 Spanning Tree Algorithm
Issue 01 (2011-11-17) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
57
Table 7-4 Parameters of Displaying Interface Settongs for STP
Title Description
Spanning Tree Shows if STP has been enabled on this interface.
STP Status Displays current state of this port within the Spanning Tree:
z
Discarding - Port receives STP configuration messages, but does not
forward packets.
z
Learning - Port has transmitted configuration messages for an interval
set by the Forward Delay parameter without receiving contradictory
information. Port address table is cleared, and the port begins learning
addresses.
z
Forwarding - Port forwards packets, and continues learning addresses.
Forward
Transitions
The number of times this port has transitioned from the Learning state to
the Forwarding state
Designated Cost The cost for a packet to travel from this port to the root in the current
Spanning Tree configuration. The slower the media,the higher the cost.
Designated
Bridge
The bridge priority and MAC address of the device through which this
port must communicate to reach the root of the Spanning Tree.
Designated Port The port priority and number of the port on the designated bridging
device through which this switch must communicate with the root of the
Spanning Tree.
Oper Path Cost The contribution of this port to the path cost of paths towards the
spanning tree root which include this port.
Oper Link Type The operational point-to-point status of the LAN segment attached to
this interface. This parameter is determined by manual configuration or
by auto-detection,
Oper Edge Port This parameter is initialized to the setting for Admin Edge Port in STP
Port Configuration (i.e., true or false), but will be set to false if a BPDU
is received, indicating that another bridge is attached to this port.
Port Role Roles are assigned according to whether the port is part of the active
topology connecting the bridge to the root bridge (i.e., root port),
connecting a LAN through the bridge to the root bridge (i.e., designated
port), is the MSTI regional root (i.e., master port), or is an alternate or
backup port that may provide connectivity if other bridges, bridge
ports, or LANs fail or are removed. The role is set to disabled (i.e.,
disabled port) if a port has no role within the spanning tree.
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Huawei Quidway S1700 Series Specifications

General

Brand	Huawei
Model	Quidway S1700 Series
Category	Switch
Language	English