You can view the results of a BERT test at the following times:Īfter you terminate the test using the no bert commandīERT is supported at the TDM side and pseudowire side.
#Cisco asr 920 code#
Use the following command to verify the BERT configuration for T1/E1 interfaces:ĪIS State:Clear LOS State:Clear LOF State:Clearįraming is ESF, FDL is ansi, Line Code is B8ZS, Clock Source is Line.ĭata in current interval (230 seconds elapsed):Ġ Line Code Violations, 0 Path Code ViolationsĠ Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded MinsĠ Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavailable SecsĠ Slip Secs, 0 Fr Loss Secs, 14 Line Err Secs, 0 Degraded MinsĠ Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 15 Unavailable SecsĠ Slip Secs, 4 Fr Loss Secs, 2 Line Err Secs, 0 Degraded MinsĤ Errored Secs, 0 Bursty Err Secs, 4 Severely Err Secs, 0 Unavailable SecsĠ Line Code Violations, 0 Path Code Violations,Ġ Slip Secs, 0 Fr Loss Secs, 14 Line Err Secs, 0 Degraded Mins,Ġ Slip Secs, 4 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins, enable configure terminal controller t1 0/1/1 bert pattern 2^11 interval 5 direction line/system exitīERT test during the specified test period, use the To run a BERT on T1/E1 interface, perform the following tasks in global configuration mode. Test, you must configure card type and controller. Syncing behaves properly when the BERT is initiated from both the local and the far end.īERT is supported for both unframed and framed modes. Since the BERT process is asserted as LOS alarms for all 0s and AIS alarms for all 1s BERT patterns. When the BERT is initiated from the local end and the loopback local is applied from the far end, then BERT syncing does not In the unframed mode, BERT sync is not stable and may generate alarms until Cisco IOS XE Fuji 16.9.4.įraming type should be similar in all routers end to end.īERT Restrictions for Cisco IOS XE Bengaluru 17.4.1 release Whereas the BERT syncing behaves properly when the BERT is initiated from both the local and the far end.įor all 1s on T3 or E3, the BERT behaviour is not asserted as AIS and the BERT syncing happens as usual. Since the BERT process is asserted as LOS alarms for all 0s and AIS alarms for all 1s BERT When the BERT is initiated with pattern 0s and 1s from the local end and the loopback local is applied from the far end, then The supported BERT patterns on each card is described.īERT is not supported on the following modes: The BERT runtime engine can be kept running until the interval completes or can be stopped by unconfiguring it anytime.īERT engines uses different BERT patterns for transmission for each mode. Use a loopback somewhere in the link or networkĬonfigure remote testing equipment to transmit the same BERT test pattern at the same time. When running a BERT test, the system expects to receive the same pattern that it transmits. You can select the testing period fromġ minute to 24 hours and you can also retrieve the error statistics anytime during the BERT test. YouĬan retrieve error statistics anytime during the BERT.īoth the total number of bits and the error bits received are available for analysis.
YouĬan display and analyze the total number of error bits transmitted and the total number of bits received on the link. The bit error rate (BER) is determined by comparing the erroneous bits received with the total number of bits received. To test cables and signal problems in the field. Pattern that is compliant with CCITT/ITU O.151, O.152, O.153 pseudo-random, and repetitive test patterns.
#Cisco asr 920 software#
With this circuitry, the interface software can send and detect a programmable The interface contains on board BERT circuitry. You can use the following methods to troubleshoot the T1 or E1 interface modules:īit Error Rate Testing (BERT) is used to test the integrity of the physical line. Troubleshooting the T1 or E1 Interface Module
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