Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
vtp (VLAN configuration)
Follow these guidelines when configuring a VTP domain name:
• The switch is in the no-management-domain state until you configure a domain name. While in the
no-management-domain state, the switch does not send any VTP advertisements even if changes
occur to the local VLAN configuration. The switch leaves the no-management-domain state after
receiving the first VTP summary packet on any port that is currently trunking or after configuring a
domain name using the vtp domain command. If the switch receives its domain from a summary
packet, it resets its configuration revision number to zero. After the switch leaves the
no-management-domain state, it can never be configured to reenter it until you clear the NVRAM
and reload the software.
• Domain names are case sensitive.
• After you configure a domain name, it cannot be removed. You can reassign it only to a different
domain.
Follow these guidelines when configuring a VTP password:
• Passwords are case sensitive. Passwords should match on all switches in the same domain.
• When the no vtp password form of the command is used, the switch returns to the no-password
state.
Follow these guidelines when enabling VTP pruning:
• If you enable pruning on the VTP server, it is enabled for the entire management domain.
• Only VLANs included in the pruning-eligible list can be pruned.
• Pruning is supported with VTP version 1 and version 2.
Follow these guidelines when enabling VTP version 2 (v2-mode):
• Toggling the version (v2-mode) state modifies certain parameters of certain default VLANs.
• Each VTP switch automatically detects the capabilities of all the other VTP devices. To use VTP
version 2, all VTP switches in the network must support version 2; otherwise, you must configure
them to operate in VTP version 1 (no vtp v2-mode).
• If all switches in a domain are VTP version 2-capable, you need only to enable VTP version 2 on
one switch; the version number is then propagated to the other version-2 capable switches in the
VTP domain.
• If you are using VTP in a Token Ring environment or configuring a Token Ring bridge relay function
(TrBRF) or Token Ring concentrator relay function (TrCRF) VLAN media type, you must enable
VTP version 2 (v2-mode).
• If you are configuring a Token Ring or Token Ring-NET VLAN media type, you must use VTP
version 1.
Examples This example shows how to place the switch in VTP transparent mode:
Switch(vlan)# vtp transparent
Setting device to VTP TRANSPARENT mode.
This example shows how to set the administrative domain for the switch:
Switch(vlan)# vtp domain OurDomainName
Changing VTP domain name from cisco to OurDomainName
This example shows how to configure the VTP domain password:
Switch(vlan)# vtp password private
Setting device VLAN database password to private.

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