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22 • T1/E1 Link
Model 3120 RAS Administrators’ Reference Guide
264
Alarms Present
Circuit ID (dsx1CircuitIdentifier)
This is the transmission vendor’s circuit identifier. Knowing the circuit ID can be helpful during
troubleshooting.
Alarms Present
This window indicates alarms on the physical line and in the case of a PRI the status of Layer 2.
Figure 105. Line Status Alarms window
The physical line failures currently registering will be indicated by the ACTIVE label next to the failure type.
Physical Line Alarms (dsx1LineStatus)
This variable indicates interface line status. It contains loopback, failure, received alarm and transmitted alarm
information. If any condition other than
No Alarms
exists, you can click on the
Alarms Present
link to view
the Line Status Alarms window (see figure 105).
The following failure states are reported in the dsx1LineStatus object. The items listed in this section comprise
those contained in RFC 1406—Definitions of Managed Objects for the DS1 and E1 Interface Types.
Far End Alarm Failure
Far End Alarm failure is also known as a Yellow Alarm in the T1 case or Distant Alarm in the E1 case.
For D4 links, the Far End Alarm failure occurs when bit 6 of all channels has been zero for at least 335 ms. The
alarm is cleared when bit 6 of at least one channel is non-zero for a period T, where T is usually less than 1 sec-
ond and always less than 5 seconds. The Far End Alarm failure is not declared for D4 links when a Loss of Sig-
nal is detected.
For ESF links, the Far End Alarm failure is declared if the Yellow Alarm signal pattern occurs in at least 7 out of
10 contiguous 16-bit pattern intervals. The alarm is cleared when the Yellow Alarm signal pattern has not
occurred for 10 contiguous 16-bit signal pattern intervals.
Содержание 3120
Страница 8: ...Contents Model 3120 RAS Administrators Reference Guide 8...
Страница 12: ...About this guide Model 3120 RAS Administrators Reference Guide 12...
Страница 16: ...1 Introduction Model 3120 RAS Administrators Reference Guide 16 Saving HTTP HTML Object Changes...
Страница 21: ...21 Chapter 3 Import Export Chapter contents Introduction 22 Export Configuration 22 Import Configuration 24...
Страница 32: ...4 Alarms Model 3120 RAS Administrators Reference Guide 32 Modify Alarms Configuring alarm severity levels...
Страница 134: ...8 Dial Out Model 3120 RAS Administrators Reference Guide 134 An example section of dialout...
Страница 140: ...9 Callback Access Server Administrators Reference Guide 140 Dialout...
Страница 176: ...13 Filter IP Model 3120 RAS Administrators Reference Guide 176 An example of using a filter...
Страница 178: ...14 Frame Relay Model 3120 RAS Administrators Reference Guide 178 Congestion frameEnableCongestion 184...
Страница 226: ...17 MFR Version 2 Model 3120 RAS Administrators Reference Guide 226 MFR Version 2 Modify...
Страница 238: ...19 SNMP Model 3120 RAS Administrators Reference Guide 238 Out...
Страница 250: ...20 System Model 3120 RAS Administrators Reference Guide 250 System Packet Holding Message Blocks...
Страница 299: ...299 Chapter 24 About Chapter contents Introduction 300 Patton Electronics Company contact information 300...
Страница 304: ...25 License Model 3120 RAS Administrators Reference Guide 304 End User License Agreement...
Страница 309: ...309 Appendix B MIB trees Chapter contents Model 2960 MIB Tree Structure 310...