Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show controllers lre link monitor
show controllers lre link monitor
Use the show controllers lre link monitor privileged EXEC command to display Long-Reach Ethernet
(LRE) link monitor information.
show controllers lre monitor {errors | parameters | statistics} {local [interface-id] | remote
[interface-id]} [ | {begin | exclude | include} expression]
This command is available only on Catalyst 2950 LRE switches.
Syntax Description
Command Modes Privileged EXEC
Command History
Usage Guidelines The link monitor process collects error information at 1-minute intervals for 15 minutes. After 15
minutes, the data is analyzed and stored before starting a new collection sequence. Up to 2 hours of link
monitor data can be shown.
Local monitoring collects data from the LRE switch. Remote monitoring collects data from attached
CPE device.
The Time heading in the show controllers lre link monitor errors command output shows the
timestamp for the last collection sequence. The RS error count shows the cumulative error count from
the last reading. Alignment errors, frame check sequence (FCS) errors, receive errors, and oversize
errors are the Ethernet statistics collected either at the switch or at the CPE device.
The Time heading in the show controllers lre link monitor parameters command output shows the
timestamp for the last collection sequence. The signal-to-noise (SNR) error counter, shown under the
SNR Err heading, increments when the SNR value read from the chipset falls below the theoretical SNR
added to the threshold.
errors Display the LRE Reed-Solomon (RS) errors and Ethernet errors
parameters Display the LRE operating parameter data collected by the link monitor.
statistics Display the LRE link monitor statistics.
local (Optional) Display data from the LRE switch controller.
remote (Optional) Display data from the customer premises equipment (CPE) device.
interface-id (Optional) ID of the switch LRE port.
| begin (Optional) Display begins with the line that matches the specified expression.
| exclude (Optional) Display excludes lines that match the specified expression.
| include (Optional) Display includes lines that match the specified expression.
expression Expression in the output to use as a reference point.
Release Modification
12.1(11)YJ This command was introduced.

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