Specifications

Configure SONET Alarm Reporting

Configuring Serial Interfaces IC-103

Conﬁgure SONET Alarm Reporting

To conﬁgure the thresholds and the type of SONET alarms that are reported, use any of the following

commands in interface conﬁguration mode. The commands listed in this section are optional. The

default settings are adequate for most POS installations.

To display the current BER threshold setting or to view the reporting of the SONET alarms, use the

show controllers pos EXEC command.

Conﬁgure Protection Switch

Line alarm indication signal (LAIS) can be used to force a protection switch in an APS environment.

To force an APS switch when the interface is placed in administrative shut down state, use the

following command in interface conﬁguration mode:

Conﬁgure Serial Interfaces for CSU/DSU Service Modules

The Cisco T1 data service unit/channel service unit (DSU/CSU) WAN interface card is an

integrated, managed T1 or fractional T1 WAN interface card. It provides nonchannelized data rates

of 1 to 24 X 64 kbps or 1 to 24 X 56 kbps and follows ANSI T1.403 and AT&T Publication 62411

standards.

The Cisco DSU/CSU WAN T1 interface management features include the following:

• You can remotely conﬁgure the interface using Telnet and the Cisco IOS command line interface

(CLI).

• For monitoring purposes, the router and DSU/CSU are manageable as a single Simple Network

Management Protocol (SNMP) entity using CiscoWorks or CiscoView. DSU/CSU statistics are

accessed from the CLI.

• The SNMP agent supports the standard Management Information Base II (MIB II), Cisco

integrated DSU/CSU MIB, and T1 MIB (RFC 1406).

• Loopbacks (including a manual button for a network line loopback) and bit error rate tester

(BERT) tests are provided for troubleshooting.

• Test patterns, alarm counters, and performance reports are accessible using the CLI.

• The module has carrier detect, loopback, and alarm LEDs.

The following CSU and DSU service modules are described in this section:

• Fractional T1/FT/WIC CSU/DSU service module

• 2-Wire and 4-Wire, 56/64-kbps CSU/DSU service module

Command Purpose

pos threshold {b1-tca | b2-tca | b3-tca | sd-ber |

sf-ber} rate

Conﬁgure the BER threshold values for signal failure

(SF), signal degrade (SD), or threshold crossing alarms

alarms (TCA).

pos report {b1-tca | b2-tca | b3-tca | lais | lrdi |

slos}

Enable reporting of selected SONET alarms.

Command Purpose

pos ais-shut Send line alarm indication signals.