Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 359)

Multi-Service IronWare Switching Configuration Guide 329
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IEEE 802.1D Spanning Tree Protocol (STP)
12
To display only ports blocked by the STP protocol, enter the following command at any level of the
CLI.
Syntax: show spanning-tree [blocked] [vlan vlan-id] | [pvst-mode] |
detail [vlan vlan-id [ethernet slot/port ]] [begin expression | exclude expression | include
expression ]
The blocked parameter displays only ports blocked by the STP protocol. When the blocked
parameter is not specified, information is displayed for all STP controlled ports.
The vlan vlan-id parameter displays STP information for the specified port-based VLAN.
The pvst-mode parameter displays STP information for the Brocade device’s Per VLAN Spanning
Tree (PVST+) compatibility configuration. Refer to
“PVST or PVST+ compatibility” .
The detail parameter and its additional optional parameters display detailed information for
individual ports. Refer to
“Displaying detailed STP information for each interface” .
The show spanning-tree command shows the following information.
TABLE 53 CLI display of STP information
This field... Displays...
Global STP Parameters
VLAN ID The port-based VLAN that contains this spanning tree and the number of STP
instance on the VLAN. VLAN 1 is the default VLAN. If you have not configured
port-based VLANs on this device, all STP information is for VLAN 1.
Bridge Parameters
Bridge Identifier The ID assigned by STP to this bridge for this spanning tree in hexadecimal.
NOTE: If this address is the same as the Root ID, then this device or VLAN is
the root bridge for its spanning tree.
Brocade#show spanning-tree blocked vlan 10
VLAN 10 - STP instance 0
--------------------------------------------------------------------
STP Bridge Parameters:
Bridge Bridge Bridge Bridge Hold LastTopology Topology
Identifier MaxAge Hello FwdDly Time Change Change
hex sec sec sec sec sec cnt
80000024389e2d00 20 2 15 1 718 1
RootBridge RootPath DesignatedBridge Root Max Hel Fwd
Identifier Cost Identifier Port Age lo Dly
hex hex sec sec sec
80000024388f6b00 2 80000024388f6b00 3/1 20 2 15
STP Port Parameters:
Port Prio Path State Designat- Designated Designated
Num rity Cost ed Cost Root Bridge
3/2 128 2 BLOCKING 0 80000024388f6b00 80000024388f6b00
3/3 128 2 BLOCKING 0 80000024388f6b00 80000024388f6b00
3/4 128 2 BLOCKING 0 80000024388f6b00 80000024388f6b00