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bert-algorithm
Syntax
- bert-algorithm algorithm;
Hierarchy Level
- [edit interfaces interface-name ds0-options],
- [edit interfaces interface-name e1-options],
- [edit interfaces interface-name e3-options],
- [edit interfaces interface-name t1-options],
- [edit interfaces interface-name t3-options]
Release Information
Statement introduced before JUNOS Release
7.4.
Description
Configure the pattern to send in the bit stream
during a bit error rate test (BERT). Applies to T1, E3, T3, and multichannel
DS3 interfaces, the channelized interfaces (DS3, OC12, STM1), and
channelized IQ and IQE interfaces (E1, E3 and DS3).
Options
-
algorithm—Pattern
to send in the bit stream. There are two categories of test patterns:
pseudorandom and repetitive. Both patterns conform to CCITT/ITU O.151,
O.152, O.153, and O.161 standards. The algorithm can be one of the
following patterns:
-
all-ones-repeating—Pattern is all ones.
-
all-zeros-repeating—Pattern is all zeros.
-
alternating-double-ones-zeros—Pattern is
alternating pairs of ones and zeros.
-
alternating-ones-zeros—Pattern is alternating
ones and zeros.
-
pseudo-2e3—Pattern is 23 – 1.
-
pseudo-2e4—Pattern is 24 – 1.
-
pseudo-2e5—Pattern is 25 – 1.
-
pseudo-2e6—Pattern is 26 – 1.
-
pseudo-2e7—Pattern is 27 – 1.
-
pseudo-2e9-o153—Pattern is 29 – 1, as defined in the O153 standard.
-
pseudo-2e10—Pattern is 210 – 1.
-
pseudo-2e11-o152—Pattern is 211 – 1, as defined in the O152 standard.
-
pseudo-2e15-o151—Pattern is 215 – 1, as defined in the O151 standard.
-
pseudo-2e17—Pattern is 217 – 1.
-
pseudo-2e18—Pattern is 218 – 1.
-
pseudo-2e20-o151—Pattern is 220 – 1, as defined in the O151 standard.
-
pseudo-2e20-o153—Pattern is 220 – 1, as defined in the O153 standard.
-
pseudo-2e21—Pattern is 221 – 1.
-
pseudo-2e22—Pattern is 222 – 1.
-
pseudo-2e23-o151—Pattern is 223 – 1, as defined in the O151 standard.
-
pseudo-2e25—Pattern is 225 – 1.
-
pseudo-2e28—Pattern is 228 – 1.
-
pseudo-2e29—Pattern is 229 – 1.
-
pseudo-2e31—Pattern is 231 – 1.
-
pseudo-2e32—Pattern is 232 – 1.
-
repeating-1-in-4—One bit in four is set
to 1; the others are set to 0.
-
repeating-1-in-8—One bit in eight is set
to 1; the others are set to 0.
-
repeating-3-in-24—Three bits in twenty
four are set to 1; the others are set to 0.
-
Default: pseudo-2e3
Usage Guidelines
See Interface Diagnostics, Configuring E3 BERT Properties, Configuring T1 BERT Properties, Configuring T3 BERT Properties, and Examples: Configuring T3 Interfaces.
Required Privilege Level
interface—To view this statement in the
configuration.
interface-control—To add this statement to the configuration.
Related Topics
bert-error-rate, bert-period
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