Displaying Sta Settings For Interfaces - Nortel BES50GE-12T PWR User Manual

Item
Hello Time
Forward Delay
Designated Root
Root Port
Root Path Cost
Configuration Changes
Last Topology Change

Displaying STA settings for interfaces

Use the STA Port Information and STA Trunk Information pages to display
the current status of ports and trunks in the Spanning Tree. To open these
pages from the main menu, choose Applications > Spanning Tree > STA
> Port Information or Applications > Spanning Tree > STA > Trunk
Information.
Port Information and Trunk Information page items
Item
Port
Spanning Tree
STA Status
Copyright © 2006, Nortel Networks
.
Description
Interval (in seconds) at which the root device transmits a
configuration message.
The maximum time (in seconds) the root device waits before
changing states (such as discarding to learning to forwarding).
This delay is required because every device must receive
information about topology changes before it starts to forward
frames. In addition, each port needs time to listen for conflicting
information that would make it return to a discarding state;
otherwise, temporary data loops might result.
The priority and MAC address of the device in the Spanning Tree
that this switch has accepted as the root device.
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
there is no root port, then this switch has been accepted as the
root device of the Spanning Tree network.
The path cost from the root port on this switch to the root device.
The number of times the Spanning Tree has been reconfigured.
Time since the Spanning Tree was last reconfigured.
Description
The port number.
Shows if STA is enabled on this interface.
Displays the current state of this port within the Spanning Tree:
• Discarding—Port receives STA configuration messages, but
does not forward packets.
• Learning—Port transmits 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.
• Forwarding—Port forwards packets and continues learning
addresses. The rules defining port status are as follows:
A port on a network segment with no other STA compliant
bridging device is always forwarding. If two ports of a switch
are connected to the same segment and no other STA device
SMB
Using the Nortel Business Ethernet Switch 50 Series
NN47924-301 01.01 Standard
1.00 October 2006
Displaying system and switch information 107
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