bert-algorithm

Syntax

bert-algorithm algorithm;

Hierarchy Level

[edit interfaces interface-name ds0-options],
[edit interfaces interface-name t1-options],
edit interfaces interface-name e1-options],
[edit interfaces interface-name e3-options],
[edit interfaces interface-name t3-options]

Description

Configure the pattern to send in the bit stream during a BERT test. Applies to T1, E3, T3, and Multichannel DS-3 interfaces, the original channelized interfaces (DS-3, OC-12, STM-1), and also channelized QPP interfaces (E1 and DS-3).

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.
repeating-1-in-8—1 bit in 8 is set.
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 2⁹ - 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-2e3—Pattern is 2³ - 1.
pseudo-2e31—Pattern is 2³¹ - 1.
pseudo-2e32—Pattern is 2³² - 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.
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 Configure BERT Properties, Configure E3 BERT Properties, Configure T1 BERT Properties, Configure T3 BERT Properties, and Examples: Configure T3 Interfaces.

Required Privilege Level

interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.

See Also

bert-error-rate, bert-period