Cisco Catalyst 2950 User Manual

Contents
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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-12
CHAPTER 12 Configuring LRE 12-1
Understanding LRE Features 12-1
Ports on the Catalyst 2950 LRE Switches 12-1
LRE Links and LRE Profiles 12-2
LRE Profiles 12-2
LRE Sequences 12-5
CPE Ethernet Links 12-6
LRE Link Monitor 12-7
LRE Message Logging Process 12-8
Configuring LRE Ports 12-8
Default LRE Configuration 12-9
Environmental Guidelines for LRE Links 12-9
Guidelines for Using LRE Profiles 12-10
CPE Ethernet Link Guidelines 12-11
Guidelines for Configuring Cisco 575 LRE CPEs and 576 LRE 997 CPEs 12-11
Guidelines for Configuring Cisco 585 LRE CPEs 12-12
Assigning a Global Profile to All LRE Ports 12-12
Assigning a Profile to a Specific LRE Port 12-13
Assigning a Global Sequence to All LRE Ports 12-13
Assigning a Sequence to a Specific LRE Port 12-14
Using Rate Selection to Automatically Assign Profiles 12-14
Precedence 12-15
Profile Locking 12-15
Link Qualification and SNR Margins 12-16
Configuring LRE Link Persistence 12-19
Configuring LRE Link Monitor 12-20
Configuring LRE Interleave 12-20
Configuring Upstream Power Back-Off 12-21
Configuring CPE Toggle 12-22
Configuring Syslog Export 12-23
Upgrading LRE Switch Firmware 12-24
Configuring for an LRE Upgrade 12-24
Performing an LRE Upgrade 12-25
Global Configuration of LRE Upgrades 12-25
Controller Configuration of LRE Upgrades 12-25
LRE Upgrade Details 12-26
LRE Upgrade Example 12-27
Displaying LRE Status 12-27

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