Configuration Commands
Page 214
7750 SR OS Interface Configuration Guide
los —
Reports loss of signal errors. When configured,
los
traps are not raised and cleared.
Default
los
traps are issued.
oof —
Reports out-of-frame errors. When configured,
oof
alarms are not raised and cleared.
Default
oof
alarms are not issued.
rai —
Reports resource availability indicator events. When configured,
rai
events are not raised and
cleared.
Default
rai
alarms are not issued
looped —
Reports looped packets errors.
Default
looped
alarms are not issued
scramble
Syntax
[
no
]
scramble
Context
config>port>tdm>ds1>channel-group
config>port>tdm>ds3
config>port>tdm>e1>channel-group
config>port>tdm>e3
Description
This command enables payload scrambling on channel groups.
Scrambling randomizes the pattern of 1s and 0s carried in a SONET frame. Rearranging or
scrambling the pattern prevents continuous strings of all 1s or all 0s and meets the needs of physical
layer protocols that rely on sufficient transitions between 1s and 0s to maintain clocking.
For ATM, this command enables or disables ATM cell-level payload scrambling/descrambling using
x43+1 polynomial as defined in ITU-T I.432.1. Scrambling is enabled by default for the ATM path/
channel. Note that this scrambling is done in addition to SONET/SDH frame scrambling/
descrambling, which is always enabled in the framer.
The
no
form of this command disables scrambling.
Default
no scramble
keepalive
Syntax
keepalive
time-interval
[
dropcount
drop-count
]
no keepalive
Context
config>port>sonet-sdh>path>ppp
config>port>tdm>ds1>channel-group>cisco-hdlc
config>port>tdm>ds1>channel-group>ppp
config>port>tdm>ds3>ppp
config>port>tdm>e1>ppp
config>port>tdm>e3>ppp
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Страница 14: ...Preface Page 14 7750 SR OS Interface Configuration Guide ...
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 ...
Страница 417: ...Interface Configuration 7750 SR OS Interface Configuration Guide Page 417 4 5 SAP PVT 1 1 up up A ima2 ...
Страница 429: ...Interface Configuration 7750 SR OS Interface Configuration Guide Page 429 Cells 0 0 Unknown VPI VCI Cells 0 A ALA 49 ...
Страница 437: ...Interface Configuration 7750 SR OS Interface Configuration Guide Page 437 bundle num 1 256 type ppp ...
Страница 438: ...Debug Commands Page 438 7750 SR OS Interface Configuration Guide ...
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