Dell Brocade DCX, Configuration Manual

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BigIron RX Series Configuration Guide 325
53-1001810-01
IEEE 802.1D Spanning Tree Protocol (STP)
12
Displaying STP information for an entire device
To display STP information, enter the following command at any level of the CLI.
Syntax: show spanning-tree [vlan <vlan-id> ] | [pvst-mode] | [ <num> ] |
[detail [vlan <vlan-id> [ethernet <slot/port> ] [| begin <expression> | exclude <expression>
| include< expression> ]
The vlan <vlan-id> parameter displays STP information for the specified port-based VLAN.
The pvst-mode parameter displays STP information for the device’s Per VLAN Spanning Tree
(PVST+) compatibility configuration. Refer to
“PVST/PVST+ compatibility” on page 332.
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 spanning-tree 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 328.
The show spanning-tree command shows the following information.
TABLE 72
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
BigIron RX # show spanning-tree vlan 10
VLAN 10 - STP instance 1
--------------------------------------------------------------------
STP Bridge Parameters:
Bridge Bridge Bridge Bridge Hold LastTopology Topology
Identifier MaxAge Hello FwdDly Time Change Change
hex sec sec sec sec sec cnt
8000000480a04000 20 2 15 1 0 0
RootBridge RootPath DesignatedBridge Root Max Hel Fwd
Identifier Cost Identifier Port Age lo Dly
hex hex sec sec sec
8000000480a04000 0 8000000480a04000 Root 20 2 15
STP Port Parameters:
Port Prio Path State Designat- Designated Designated
Num rity Cost ed Cost Root Bridge
1/3 128 4 DISABLED 0 0000000000000000 0000000000000000
1/13 128 4 DISABLED 0 0000000000000000 0000000000000000