Cisco Catalyst 3550 Command Reference Manual page 498

show spanning-tree
interface interface-id
[active [detail] | cost |
detail [active] |
inconsistency | portfast |
priority | rootcost | state]
mst [configuration |
[digest] instance-id]
[detail | interface
interface-id [detail]]
pathcost method
root [address | cost | detail
| forward-time | hello-time
| id | max-age | port |
priority [system-id]]
summary [totals]
Catalyst 3550 Multilayer Switch Command Reference
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(Optional) Display spanning-tree information for the specified interface
(all options except portfast and state only available in privileged EXEC
mode). Enter each interface separated by a space. Ranges are not
supported. Valid interfaces include physical ports, VLANs, and port
channels. The VLAN range is 1 to 4094. The port-channel range is 1 to
64.
(Optional) Display the multiple spanning-tree (MST) region
configuration and status (all options only available in privileged EXEC
mode).
digest—(Optional) Display the MD5 digest included in the current
•
MST configuration identifier (MSTCI). Two separate digests, one
for standard and one for prestandard switches, appear (available only
in privileged EXEC mode).
The terminology was updated for the implementation of the IEEE
standard, and the txholdcount field was added.
The new master role appears for boundary ports.
The word pre-standard or Pre-STD appears when an IEEE standard
bridge sends prestandard BPDUs on a port.
The word pre-standard (config) or Pre-STD-Cf appears when a port
has been configured to transmit prestandard BPDUs and no
prestandard BPDU has been received on that port.
The word pre-standard (rcvd) or Pre-STD-Rx appears when a
prestandard BPDU has been received on a port that has not been
configured to transmit prestandard BPDUs.
A dispute flag appears when a designated port receives inferior
designated information until the port returns to the forwarding state
or ceases to be designated.
instance-id—You can specify a single instance ID, a range of IDs
•
separated by a hyphen, or a series of IDs separated by a comma. The
range is 1 to 4094. The display shows the number of configured
instances.
interface interface-id—(Optional) Valid interfaces include physical
•
ports, VLANs, and port channels. The VLAN range is 1 to 4094. The
port-channel range is 1 to 48.
detail—(Optional) Display detailed information for the instance or
•
interface.
Valid interfaces include physical ports, VLANs, and port channels. The
VLAN range is 1 to 4094. The port-channel range is 1 to 64.
(Optional) Display the default path cost method (only available in
privileged EXEC mode).
(Optional) Display root switch status and configuration (all keywords
only available in privileged EXEC mode).
(Optional) Display a summary of port states or the total lines of the
spanning-tree state section. The words IEEE Standard identify the MST
version running on a switch.
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
OL-8566-01