ADTRAN Stub Routing Betriebsanweisung PDF herunterladen (Seite 127)

These limitations do not apply to channelized IQ interfaces. For information about BERT

capabilities on channelized IQ interfaces, see Channelized IQ and IQE Interfaces Properties.

Starting and Stopping a BERT Test

Before you can start the BERT test, you must disable the interface. To do this, include

the disable statement at the [edit interfaces interface-name] hierarchy level:

[edit interfaces interface-name]

disable;

After you configure the BERT properties and commit the configuration, begin the test by

issuing the test interface interface-name interface-type-bert-start operational mode

command:

user@host> test interface interface-name interface-type-bert-start

The test runs for the duration you specify with the bert-period statement. If you wish to

terminate the test sooner, issue the test interface interface-name interface-type-bert-stop

command:

user@host> test interface interface-name interface-type-bert-stop

For example:

user@host> test interface t3-1/2/0 t3-bert-start

user@host> test interface t3-1/2/0 t3-bert-stop

To view the results of the BERT test, issue the show interfaces extensive | find BERT

command:

user@host> show interfaces interface-name extensive | find BERT

For more information about running and evaluating the results of the BERT procedure,

see the Junos OS Operational Mode Commands.

NOTE: To exchange BERT patterns between a local router and a remote

router, include the loopback remote statement in the interface configuration

at the remote end of the link. From the local router, issue the test interface

command.

Example: Configuring Bit Error Rate Testing

Configure a BERT test on a T3 interface. In this example, the run duration lasts for 120

seconds. The configured error rate is 0, which corresponds to a bit error rate of 10

–0

error per bit). The configured bit pattern of all-ones-repeating means that every bit the

interface sends is a set to a value of 1.

[edit interfaces]

t3-1/2/0 {

t3-options {

bert algorithm all-ones-repeating;

bert-error-rate 0;

bert-period 120;

Chapter 8: Interface Diagnostics

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ADTRAN Stub Routing Betriebsanweisung Seite 127