Interface Configuration
7750 SR OS Interface Configuration Guide
Page 257
Description
This command configures the speed of a SONET/SDH port as either OC3 or OC12. The framer for
this MDA operates in groups of four. Changing the port speed for a port requires resetting the framer
and causes a slight disruption on all four ports. The first framer controls ports 1,2,3,4, the second
framer controls ports 5,6,7,8 etc.
To change the port speed on a SONET/SDH port, the port must be administratively shut down and all
channels must be removed. When the port speed is changed, the default channel configuration is
recreated.
The
no
form of this command reverts back to default.
Default
oc12
Parameters
oc3 —
set the speed of the port to OC-3.
oc12 —
Set the speed of the port to OC-12.
threshold
Syntax
threshold
{
ber-sd
|
ber-sf
}
rate
threshold-rate
no threshold
{
ber-sd
|
ber-sf
}
Context
config>port>sonet-sdh
Description
This command configures the line signal degradation bit error rate (BER) and line signal failure
thresholds.
Line signal (b2) bit interleaved parity error rates are measured and when they cross either the
degradation or failure thresholds alarms are raised (see the report-alarm line & section command),
furthermore if the failure threshold is crossed the link will be set to operationally down.
Note:
For APS configurations, if the
ber-sd
or
ber-sf
threshold rates must be modified, the changes
must be performed at the line level on both the working and protect APS port member. See port
.
The
no
form of this command reverts to the default value.
Default
threshold ber-sf 6
— Signal degrade BER threshold of 10
-6
threshold ber-sf 3
— Signal failure BER threshold of 10
-3
Parameters
ber-sd —
Specifies the BER that specifies signal degradation
ber-sf —
Specifies the BER that specifies signal failure
rate —
The BER negative exponent (n in 10
-n
), expressed as a decimal integer.
Values
3 — 9 (10
-3
— 10
-9
)
Содержание 7750 SR OS
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Страница 16: ...Getting Started Page 16 7750 SR OS Interface Configuration Guide ...
Страница 184: ...Card MDA and Port Command Reference Page 184 7750 SR OS Interface Configuration Guide ...
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Страница 438: ...Debug Commands Page 438 7750 SR OS Interface Configuration Guide ...
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