Lucent Technologies CAJUN M770, User Manual

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Chapter 5 Managing Physical Ports
42 Cajun M770 ATM Switch User’s Guide
Configuring payload scrambling
You can configure payload scrambling on or off. By default this is set to on.
When payload scrambling is enabled, the transmitted data will be passed through a
self-synchronizing scrambler with the polynomial x
43
+1. This provides security
against false cell and frame delineation.
Note: Before any physical port parameters can be changed, cleared, or reset, you
must disable the physical port. For more information about how to disable a
physical port, see Disabling a physical port earlier in this chapter.
To configure payload scrambling for a physical port, use the
pport set
payloadscrambling
command.
Specifying the framing mode for a port
You can specify whether the framing mode used for a physical port is either Sonet
or SDH. The default setting is Sonet.
Note:
Before any physical port parameters can be changed, cleared, or reset, you
must disable the physical port. For more information about how to disable a
physical port, see Disabling a physical port earlier in this chapter.
Command:
M15-155s8:/>pport set payloadscrambling <pport> [on |
off]
Example:
M15-155s8:/>pport set payloadscrambling 8.3 on
Parameters:
<pport id>
The physical port identifier in the form
<slot>.<port number>.
[on | off]
To specify the whether payload scrambling
is on or off.