Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 498)

468 Multi-Service IronWare Switching Configuration Guide
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show rstp
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show rstp
Displays Rapid Spanning Tree Protocol (RSTP) information.
Syntax show rstp [blocked] [vlan vlan-id]
Parameters blocked (Optional) Displays information in respect of ports blocked by the RSTP only.
vlan vlan-id (Optional) Specifies the display of information for a specific VLAN.
Command
Modes
User EXEC mode
Privileged EXEC mode
Global configuration mode
Usage
Guidelines
Command
Output
The show rstp command displays the following information:
Output field Description
VLAN ID The port-based VLAN that owns the STP instance and the number of RSTP instances
on that VLAN. VLAN 1 is the default VLAN. If you have not configured port-based
VLANs on this device, all RSTP information is for VLAN 1.
Bridge IEEE RSTP Parameters
Bridge Identifier The ID of the bridge.
Bridge Max Age The configured max age for this bridge. The default is 20.
Bridge Hello The configured hello time for this bridge.The default is 2.
Bridge FwdDly The configured forward delay time for this bridge. The default is 15.
Force-Version The configured force version value. One of the following value is displayed:
•
0 – The bridge has been forced to operate in an STP compatibility mode.
•
2 – The bridge has been forced to operate in an RSTP mode. (This is the default.)
txHoldCnt The number of BPDUs that can be transmitted per Hello Interval. The default is 3.
Root Bridge Parameters:
Root Bridge Identifier ID of the Root bridge that is associated with this bridge
Root Path Cost The cost to reach the root bridge from this bridge. If the bridge is the root bridge, then
this parameter shows a value of zero.
Designated Bridge
Identifier The bridge from where the root information was received.It can be from the root bridge
itself, but it could also be from another bridge.
Root Port The port on which the root information was received. This is the port that is
connected to the Designated Bridge.