Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show spanning-tree
Command Modes User EXEC; indicated keywords available only in privileged EXEC mode
Command History
Usage Guidelines If the vlan-id variable is omitted, the command applies to the spanning-tree instance for all VLANs.
Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output
do not appear, but the lines that contain Output appear.
mst [configuration |
instance-id] [detail |
interface interface-id
[detail]]
(Optional) Display the multiple spanning-tree (MST) region
configuration and status (all options only available in privileged EXEC
mode).
Display MST information for an instance, a range of instances separated
by a hyphen, or a series of instances separated by a comma. The range is
0 to 15.
Valid interfaces include physical ports, VLANs, and port channels. The
VLAN range is 1 to 4094. The port-channel range is 1 to 6.
pathcost method (Optional) Display the default path cost method (only available in
privileged EXEC mode).
root [address | cost | detail
| forward-time | hello-time
| id | max-age | port |
priority [system-id]]
(Optional) Display root switch status and configuration (all keywords
only available in privileged EXEC mode).
summary [totals] (Optional) Display a summary of port states or the total lines of the
spanning-tree state section.
uplinkfast (Optional) Display spanning-tree UplinkFast status.
vlan vlan-id [active
[detail] | backbonefast |
blockedports | bridge
[address | detail |
forward-time | hello-time |
id |
max-age | priority
[system-id] | protocol]
(Optional) Display spanning-tree information for a single VLAN
identified by VLAN ID number, a range of VLANs separated by a
hyphen, or a series of VLANs separated by a comma (some keywords
only available in privileged EXEC mode).
The VLAN range is 1 to 4094.
| begin (Optional) Display begins with the line that matches the expression.
| exclude (Optional) Display excludes lines that match the expression.
| include (Optional) Display includes lines that match the specified expression.
expression Expression in the output to use as a reference point.
Release Modification
12.0(5.2)WC(1) This command was introduced.
12.1(6)EA2 The active, backbonefast, blockedports, bridge, inconsistentports,
pathcost method, root, total, and uplinkfast keywords were added.
12.1(9)EA1 The mst keyword and options were added. The brief keyword was removed,
and the detail keyword was added.
12.1(20)EA2 This command was added to the SI.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz