Cisco Catalyst 2950 Software Guide

5-5
Catalyst 2950 Desktop Switch Software Configuration Guide
78-11380-03
Chapter 5 Clustering Switches
Planning a Switch Cluster
Discovery through CDP Hops
ByusingCDP,acommandswitchcandiscoverswitchesuptosevenCDPhopsaway(thedefaultis
three hops) from the edge of the cluster. The edge of the cluster is where the last member switches are
connected to the cluster (for example, the command switch and member switches 8, 9, and 10 in
Figure 5-1 are at the edge of the cluster).
You can set the number of hops the command switch searches for candidate and member switches by
selecting Cluster > Hop Count. When new candidate switches are added to the network, the command
switch discovers them and adds them to the list of candidate switches.
Figure 5-1 shows a switch cluster with candidate switches. The command switch has ports assigned to
management VLAN 16. The CDP hop count is three. The command switch discovers switches 11, 12,
13, and 14 because they are within 3 hops from the edge of the cluster. It does not discover switch 15
because it is 4 hops from the edge of the cluster.
Figure 5-1 Discovery through CDP Hops
Command switch
Member
switch 10
Edge of
cluster
Member
switch 8
Member
switch 9
Switch 11
candidate
switch
Candidate
switches
Management
VLAN 16
Management
VLAN 16
65281
Switch 12
Switch 13
Switch 14
Switch 15

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