Cisco Catalyst 2950 Software Guide

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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 5 Clustering Switches
Command Switch Characteristics
• If your switch cluster has Catalyst 2900 XL, Catalyst 2950, and Catalyst 3500 XL switches, the
Catalyst 2950 should be the command switch.
• If your switch cluster has Catalyst 1900, Catalyst 2820, Catalyst 2900 XL, and Catalyst 3500 XL
switches, either the Catalyst 2900 XL or Catalyst 3500 XL should be the command switch.
Standby Command Switch Characteristics
A Catalyst 2950 standby command switch must meet these requirements:
• It is running 12.0(5.2)WC(1) or later.
• It has an IP address.
• It has CDP version 2 enabled.
• It is connected to the command switch through the command-switch management VLAN.
• It is redundantly connected to the cluster so that connectivity to member switches is maintained.
• It is not a command or member switch of another cluster.
Note • When the command switch is a Catalyst 3550 switch, all standby command switches must be
Catalyst 3550 switches or Catalyst 2950 switches running Cisco IOS Release 12.1(6)EA2 or later.
• When the command switch is a Catalyst 2950 switch running Cisco IOS Release 12.1(6)EA2 or
later, all standby command switches must be Catalyst 2950 switches running Cisco IOS
Release 12.1(6)EA2 or later.
• When the Catalyst 2950 command switch is running Cisco IOS Release 12.0(5)WC2 or earlier, the
standby command switches can be these switches also running Cisco IOS Release 12.0(5)WC2 or
earlier: Catalyst 2900 XL, Catalyst 2950, and Catalyst 3500 XL switches.
Candidate and Member Switches Characteristics
Candidate switches are cluster-capable switches that have not yet been added to a cluster. Member
switches are switches that have actually been added to a switch cluster. Although not required, a
candidate or member switch can have its own IP address and password (for related considerations, see
the “IP Addresses” sectiononpage5-13and “Passwords” sectiononpage5-14).
To join a cluster, a candidate switch must meet these requirements:
• It is running cluster-capable software.
• It has CDP version 2 enabled.
• It is connected to the command switch through the command-switch management VLAN.
• It is not a command or member switch of another cluster.

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