Brocade TurboIron 24X Series Configuration Guide - Manual (Page 602)

568 Brocade TurboIron 24X Series Configuration Guide
53-1003053-01
PVST/PVST+ compatibility
TurboIron(config) spanning-tree single ethernet 1 priority 10
The commands shown above override the global setting for STP priority and set the priority to 10 for
port 1.
Here is the syntax for the global STP parameters.
Syntax: [no] spanning-tree single [forward-delay <value>] [hello-time <value>] | [maximum-age
<time>] | [priority <value>]
Here is the syntax for the STP port parameters.
Syntax: [no] spanning-tree single [ethernet<portnum> path-cost <value> | priority <value>]
NOTE
Both commands listed above are entered at the global CONFIG level.
Displaying SSTP information
To verify that SSTP is in effect, enter the following commands at any level of the CLI.
TurboIron#show span
Syntax: show span [vlan <vlan-id>] | [pvst-mode] | [<num>] | [detail [vlan <vlan-id> [ethernet
<portnum>] | <num>]]
The vlan <vlan-id> parameter displays STP information for the specified port-based VLAN.
The pvst-mode parameter displays STP information for the device Per VLAN Spanning Tree (PVST+)
compatibility configuration. Refer to
“PVST/PVST+ compatibility” on page 568.
The <num> parameter displays only the entries after the number you specify. For example, on a
device with three port-based VLANs, if you enter 1, then information for the second and third VLANs
is displayed, but information for the first VLAN is not displayed. Information is displayed according
to VLAN number, in ascending order. The entry number is not the same as the VLAN number. For
example, if you have port-based VLANs 1, 10, and 2024, then the command output has three STP
entries. To display information for VLANs 10 and 2024 only, enter show span 1.
The detail parameter and its additional optional parameters display detailed information for
individual ports. Refer to
“Displaying detailed STP information for each interface” on page 520.
PVST/PVST+ compatibility
The TurboIron X Series family of switches support Cisco's Per VLAN Spanning Tree plus (PVST+), by
allowing the device to run multiple spanning trees (MSTP) while also interoperating with IEEE
802.1Q devices
1 .
NOTE
Ports automatically detect PVST+ BPDUs and enable support for the BPDUs once detected. You do
not need to perform any configuration steps to enable PVST+ support. However, to support the IEEE
802.1Q BPDUs, you might need to enable dual-mode support.
1. Cisco user documentation for PVST/PVST+ refers to the IEEE 802.1Q spanning tree as the
Common Spanning Tree (CST).