Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 640

JUNOS 10.1 Network Interfaces Configuration Guide
Configuring E3 Physical Interface Properties
To configure E3-specific physical interface properties, include the
at the
Configuring E3 BERT Properties
This section discusses BERT properties for the E3 interface specifically. For general
information about the JUNOS implementation of the BERT procedure, see "Interface
Diagnostics" on page 146.
You can configure an E3 interface to execute a bit error rate test (BERT) when the
interface receives a request to run this test. You specify the duration of the test, the
pattern to send in the bit stream, and the error rate to include in the bit stream by
including the
interfaces interface-name e3-options]
By default, the BERT period is 10 seconds. You can configure the BERT period to last
from 1 through 239 seconds on some PICs and from 1 through 240 seconds on other
PICs.
rate
to a bit error rate from 10
10 million bits).
algorithm
the pattern to send in the bit stream by including the
[edit interfaces interface-name interface-options]
570
Configuring E3 Physical Interface Properties
[edit interfaces interface-name]
[edit interfaces interface-name]
e3-options {
bert-algorithm algorithm;
bert-error-rate rate;
bert-period seconds;
compatibility-mode (digital-link | kentrox | larscom) <subrate value>;
fcs (16 | 32);
idle-cycle-flag value;
invert-data;
loopback (local | remote);
(payload-scrambler | no-payload-scrambler);
start-end-flag value;
(unframed | no-unframed);
}
bert-period , bert-algorithm
[edit interfaces interface-name e3-options]
bert-algorithm algorithm;
bert-error-rate rate;
bert-period seconds;
is the bit error rate. This can be an integer from 0 through 7, which corresponds
–0
is the pattern to send in the bit stream. On E3 interfaces, you can also select
[edit interfaces interface-name interface-options]
bert-algorithm algorithm;
hierarchy level:
, and bert-error-rate
hierarchy level:
(0, which corresponds to no errors) to 10
bert-algorithm
hierarchy level:
e3-options statement
statements at the [edit
–7
(1 error per
statement at the