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Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 263

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CLI display of detailed STP information for ports

TABLE 47

Field

Description

Active Spanning
Tree protocol

The VLAN that contains the listed ports and the active Spanning Tree protocol.

The STP type can be one of the following:

• MULTIPLE SPANNNG TREE (MSTP)
• GLOBAL SINGLE SPANNING TREE (SSTP)

NOTE
If STP is disabled on a VLAN, the command displays the following message instead:
"Spanning-tree of port-vlan vlan-id is disabled."

Bridge identifier

The STP identity of this device.

Active global timers The global STP timers that are currently active, and their current values. The following timers

can be listed:

• Hello - The interval between Hello packets. This timer applies only to the root bridge.
• Topology Change (TC) - The amount of time during which the topology change flag in

Hello packets will be marked, indicating a topology change. This timer applies only to the
root bridge.

• Topology Change Notification (TCN) - The interval between Topology Change Notification

packets sent by a non-root bridge toward the root bridge. This timer applies only to non-
root bridges.

Spanning Tree Protocol

FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

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