Cisco ASR 9000 Series Manuel de configuration - Page 11

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Cisco ASR 9000 Series Manuel de configuration
Configuring Clear Channel T3/E3 and Channelized T3 and T1/E1 Controllers on the Cisco ASR 9000 Series Router
LNM Logging
When you enable syslog messages for LNM events using the lnm syslog command, LNM messages will
appear in both the system log and in the log events buffer. You can display LNM events in the log events
buffer using the show logging events buffer bistate-alarms-set command, and also using the show
logging command, which are described in the Cisco ASR 9000 Series Aggregation Services Router
System Monitoring Command Reference.
LNM supports hierarchical level alarm reporting as defined in the Telcordia (Bellcore) GR-253 standard.
Hierarchical alarm reporting means that whenever a higher alarm is asserted, the lower alarm state is
suppressed. When the high alarm is cleared, the lower alarm will re-assert if the condition still exists.
For LNM, this means that if a major warning threshold is continuously met or exceeded resulting in a
crossed event and alarm state, then a minor warning alarm state is suppressed and returned to stable state.
The minor crossed event also is removed from the bistate log. When the major warning is cleared, the
minor warning alarm is asserted if the condition still exists.
Only a single crossed event for major warnings will appear in the bistate log for the controller. Therefore,
you will see only a single log message for a controller if noise exists above configured threshold values.
How to Configure Clear Channel T3/E3 Controllers and
Channelized T1/E1 Controllers
The T3/E3 controllers are configured in the physical layer control element of the Cisco IOS XR software
configuration space. This configuration is described in the following tasks:
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Configuring a Clear Channel E3 Controller
When an E3 controller is in clear channel mode, it carries a single serial interface.
The E3 controllers are configured using the E3 configuration mode.
Restrictions
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OL-32684-01
Configuring a Clear Channel E3 Controller, page 455
Modifying the Default E3 Controller Configuration, page 457
Configuring a Clear Channel T3 Controller, page 460
Configuring a Channelized T3 Controller, page 461
Modifying the Default T3 Controller Configuration, page 464
Configuring a T1 Controller, page 466
Configuring an E1 Controller, page 470
Configuring BERT, page 474
Configuring Link Noise Monitoring on a T1 or E1 Channel, page 481
If you configure an option that is not valid for your controller type, you receive an error when you
commit the configuration.
A single SPA cannot support a mixture of T3 and E3 interfaces.
Cisco ASR 9000 Aggregation Services Router Interface and Hardware Component Configuration Guide
How to Configure Clear Channel T3/E3 Controllers and Channelized T1/E1 Controllers
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