Name: Cisco Catalyst 2950
Brand: Cisco
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CHAPTER

30-1

Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

78-11380-12

Configuring EtherChannels

This chapter describes how to configure EtherChannel on the Layer 2 interfaces of a Catalyst 2950 or

Catalyst 2955 switch.

This chapter consists of these sections:

• Understanding EtherChannels, page 30-1

• Configuring EtherChannels, page 30-7

• Displaying EtherChannel, PAgP, and LACP Status, page 30-14

Note For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release.

Understanding EtherChannels

EtherChannel provides fault-tolerant high-speed links between switches, routers, and servers. You can

use it to increase the bandwidth among the wiring closets and the data center, and you can deploy it

anywhere in the network where bottlenecks are likely to occur. EtherChannel provides automatic

recovery for the loss of a link by redistributing the load across the remaining links. If a link fails,

EtherChannel redirects traffic from the failed link to the remaining links in the channel without

intervention.

An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single

logical link as shown in Figure 30-1. The EtherChannel provides full-duplex bandwidth up to 800 Mbps

(Fast EtherChannel) or 2 Gbps (Gigabit EtherChannel) between your switch and another switch or host.

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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