Lucent Technologies CAJUN M770, User Manual

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Chapter 5 Managing Physical Ports
Cajun M770 ATM Switch User’s Guide 43
To specify framing for a physical port, use the
pport set framing
command.
Configuring transmit rate limiting
The M770 ATM Switch hardware enables you to configure the peak output cell rate
of any port to be restricted, to control congestion on the network. This feature is
used for traffic shaping, mainly when you have a WAN connection.
For example, if a 155Mbps port is connected to another service at a lower rate
(<155Mbps), then this will require the data cell rate (ignoring idle cells) to be rate
limited at the output port of the switch.
The outcome of this command can be seen in “pport show” in the speed column.
This command is not supported by the M3-622 ATM modules.
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 framing <pport> [sonet | SDH]
Example:
M15-155s8:/>pport set framing 8.1 SDH
Parameters:
<pport id>
The physical port identifier in the form
<slot>.<port number>.
sonet
Sets the framing mode for the physical
port to Sonet. The default setting is Sonet.
SDH
Sets the framing mode for the physical
port to SDH.