Configuring Bert In Sdh For Satop - Cisco ASR 900 Series Configuration Manual

Configuring BERT in SDH for SAToP

mode sdh
controller SDH 0/5/0
rate STM16
no ais-shut
alarm-report all
clock source internal
overhead s1s0 0
aug mapping au-4
au-4 1
mode vc4
clock source internal
loopback local
overhead c2 10
threshold b3-ber_sd 7
threshold b3-ber_sf 7
overhead j1 tx message STRING
overhead j1 expected message STRING
threshold b3-tca 5
au-4 2
Configuring BERT in SDH for SAToP
Bit-Error Rate Testing (BERT) is used to analyze quality and to resolve problems of digital transmission
equipment. BERT tests the quality of an interface by directly comparing a pseudorandom or repetitive test
pattern with an identical locally generated test pattern.
The BERT operation is data-intensive. Regular data cannot flow on the path while the test is in progress. The
path is reported to be in alarm state when BERT is in progress and restored to a normal state after BERT has
terminated.
The supported BERT patterns are 2^15, 2^20, 2^23, all 0s and all 1s.
BERT is supported in the following two directions:
• Line - Supports BERT in TDM direction.
• System - Supports BERT in PSN direction. CEM must be configured before running BERT towards
The following table shows the SDH level of BERT patterns supported.
Modes
SDH - VC4-4c, VC4-8c, VC4-16c, AU4-VC4,
AU4-TUG3-VC3 levels
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
(Cisco ASR 900 Series)
96
system direction.
Configuring SDH on 1-Port OC-192/STM-64 or 8-Port OC-3/12/48/STM-1/-4/-16 Module
Patterns
• 0s - Repeating pattern of zeros
• 1s- Repeating pattern of Ones
• 2^15 - O.151 - Error and Jitter measurement of
1544, 2048, 6312, 8448, 32064, 44736 kbps
• 2^20 - O.153
• 2^20 - O.151 - Error and Jitter measurement
upto 72 kbps
• 2^23 - O.151 - Error and Jitter measurement of
34368 kbps and 139264 kbps