Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide - Manual (Page 262)

Untagged Ports: (S3) 17 18 19 20 21 22 23 24
Untagged Ports: (S4) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Untagged Ports: (S4) 18 19 20 21 22 23 24
Tagged Ports: None
Uplink Ports: None
PORT-VLAN 2, Name greenwell, Priority level0, Spanning tree Off
Untagged Ports: (S1) 1 2 3 4 5 6 7 8
Untagged Ports: (S4) 1
Tagged Ports: None
Uplink Ports: None
Syntax: show vlan [vlan-id | ethernet port]
The vlan-id parameter specifies a VLAN for which you want to display the configuration information.
Displaying detailed STP information for each interface
To display the detailed STP information, enter the following command at any level of the CLI.
device#show span detail
======================================================================
VLAN 1 - MULTIPLE SPANNING TREE (MSTP) ACTIVE
======================================================================
Bridge identifier - 0x800000e0804d4a00
Active global timers - Hello: 0
Port 1/1 is FORWARDING
Port - Path cost: 19, Priority: 128, Root: 0x800000e052a9bb00
Designated - Bridge: 0x800000e052a9bb00, Interface: 1, Path cost: 0
Active Timers - None
BPDUs - Sent: 11, Received: 0
Port 1/2 is DISABLED
Port 1/3 is DISABLED
Port 1/4 is DISABLED
<lines for remaining ports excluded for brevity>
NOTE
The line in the above output, VLAN 1 - MULTIPLE SPANNING TREE (MSTP) ACTIVE, is not the
802.1s standard. It is the same Global STP (IEEE 802.1D) type as shown in the output of the show
span CLI command.
If a port is disabled, the only information shown by this command is "DISABLED". If a port is enabled,
this display shows the following information.
Syntax: show span detail [ vlan vlan-id [ethernet port | num]
The vlan vlan-id parameter specifies a VLAN.
The num parameter specifies the number of VLANs you want the CLI to skip before displaying detailed
STP information. For example, if the device has six VLANs configured (VLAN IDs 1, 2, 3, 99, 128, and
256) and you enter the command show span detail 4 , detailed STP information is displayed for
VLANs 128 and 256 only.
NOTE
If the configuration includes VLAN groups, the show span detail command displays the master
VLANs of each group but not the member VLANs within the groups. However, the command does
indicate that the VLAN is a master VLAN. The show span detail vlan vlan-id command displays the
information for the VLAN even if it is a member VLAN. To list all the member VLANs within a VLAN
group, enter the show vlan-group [ group-id ] command.
The show span detail command shows the following information.
Spanning Tree Protocol
262 FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide
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