21 • T1/E1 Link
Model LRA2900A RAS Administrators’ Reference Guide
249
Line Status (dsx1LineStatus)
Circuit ID (dsx1CircuitIdentifier)
This is the transmission vendor’s circuit identifier. Knowing the circuit ID can be helpful during
troubleshooting.
Line Status (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 86).
Figure 86. Line Status Alarms window
The alarms currently present on the line will be indicated by the
ACTIVE
label next to the alarm type.
Failure States
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 LRA 2900
Страница 29: ...Contents Model LRA2900A RAS Administrators Reference Guide 29 ...
Страница 33: ...About this guide Model LRA2900A RAS Administrators Reference Guide 33 ...
Страница 37: ...1 Introduction Model LRA2900A RAS Administrators Reference Guide 37 Saving HTTP HTML Object Changes ...
Страница 42: ...42 Chapter 3 Import Export Chapter contents Introduction 43 Export Configuration 43 Import Configuration 45 ...
Страница 63: ...5 Authentication Model LRA2900A RAS Administrators Reference Guide 63 Modify Static User ...
Страница 72: ...72 Model LRA2900A RAS Administrators Reference Guide 7 Dial In ...
Страница 109: ...7 Dial In Model LRA2900A RAS Administrators Reference Guide 109 Dial In User Statistics window ...
Страница 125: ...8 Dial Out Model LRA2900A RAS Administrators Reference Guide 125 An example demonstrating how Dial Out is used ...
Страница 155: ...12 Filter IP Model LRA2900A RAS Administrators Reference Guide 155 An example of using a filter ...
Страница 201: ...16 MFR Version 2 Model LRA2900A RAS Administrators Reference Guide 201 ...
Страница 211: ...16 MFR Version 2 Model LRA2900A RAS Administrators Reference Guide 211 MFR Version 2 Modify ...
Страница 268: ...268 Chapter 22 About Chapter contents Introduction 269 Black Box contact information 269 ...
Страница 273: ...23 License Model LRA2900A RAS Administrators Reference Guide 273 End User License Agreement ...
Страница 278: ...278 Appendix B MIB trees Chapter contents Model LRA 2900 MIB Tree Structure 279 ...