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 interfaces
This is an example of output from the show interfaces trunk command:
Switch# show interfaces trunk
Port Mode Encapsulation Status Native vlan
Fa0/4 on 802.1q trunking 1
Fa0/6 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/4 1-4094
Fa0/6 1-4094
Port Vlans allowed and active in management domain
Fa0/4 1-2,51-52
Fa0/6 1-2,51-52
Port Vlans in spanning tree forwarding state and not pruned
Fa0/4 1
Fa0/6 1-2,51-52
Table 2-23 show interfaces switchport Field Descriptions
Field Description
Name Displays the port name.
Switchport Displays the administrative and operational status of the port.
In this output, the port is in switchport mode.
Administrative Mode
Operational Mode
Displays the administrative and operational mode.
Administrative Trunking
Encapsulation
Negotiation of Trunking
Displays the administrative and operational encapsulation
method, and whether trunking negotiation is enabled.
Access Mode VLAN Displays the VLAN ID to which the port is configured.
Trunking Native Mode VLAN
Trunking VLANs Enabled
Trunking VLANs Active
Note Lists the VLAN ID of the trunk that is in native mode.
Lists the allowed VLANs on the trunk. Lists the active
VLANs on the trunk.
Pruning VLANs Enabled Lists the VLANs that are pruning-eligible.
Administrative private-vlan
host-association >
Administrative private-vlan mapping
Operational private-vlan
Displays the administrative and operational status of the
private VLAN and displays the private-VLAN mapping.
Note Private VLANs are not supported on the switch.
Capture Mode
Captured VLANs Allowed
Displays the capture mode and the number of captured VLANs
allowed.
Note Because the switch does not support the capture
feature, the values for these fields do not change.
Protected Displays whether or not protected port is enabled (True) or
disabled (False) on the interface.
Voice VLAN Displays the VLAN ID on which voice VLAN is enabled.
Appliance trust Displays the class of service (CoS) setting of the data packets
of the IP phone.

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