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About Link Noise Monitoring
Command
Step 1
Router# t1 <1-28> span syslog
Router# e1 <1-21> span syslog
Example:
Router# t1 3 span syslog
Step 2
Router# no [e1 <1-21> span syslog]
Router# no [t1 <1-21> span syslog]
Example:
Router# no e1 3 span syslog
For more information on the Link Noise Monitoring feature, see the Link Noise Monitoring feature
guide.
Configuration Examples for Link Noise Monitoring
This section provides the following configuration examples:
•
•
•
Example of LNM Configuration on a Line Card
Example 1
Channelized OC-12 line cards.
Example 1
Router# configure terminal
Router(config)# controller soNET 7/0/0
Router(config-controller)# framing sonet
Router(config-controller)# clock source internal
Router(config-controller)# path 1 controller t3
Router(config-controller)# exit
Router(config)# controller t3 7/0/0.1
Router(config-controller)# t1 1 channel-group 0 timeslots 1-24
! Once a T1/E1 is created, LNM can be configured using 'span' CLI
Router(config-controller)# t1 1 ?
bert
channel-group
clock
fdl
framing
loopback
span
Router(config-controller)# t1 1 span
Cisco 10000 Series Router Software Configuration Guide
19-4
Example of LNM Configuration on a Line Card, page 19-4
Example of LNM Configuration on a Shared Port Adapter, page 19-5
Example of a Syslog Message, page 19-5
shows how to configure the LNM feature on the 4-port Channelized OC-3/STM-1 and 1-port
Sample Output of LNM Configuration on a Line Card
Start BERT test
Specify a channel-group mapping on a T1 interface
Specify the clock source for a T1
Specify the Facility Data Link for a T1
Specify the type of Framing on a T1
Put the T1 line into loopback
Noise monitor for managing noisy T1 spans
Chapter 19
Description
Generates syslog messages for the specified T1 link. A T1 link
has 28 channels. An E1 link has 21 channels.
Disables generation of syslog messages for the specified
T1/E1link.
Configuring Link Noise Monitoring
OL-2226-23
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Troubleshooting
