Cabletron Systems MMAC-Plus SFCS-1000, Configuration Manual

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B-61
AMI Configuration Commands
B.8.2 E-3 Port Configuration Commands
These commands allow the user to modify various aspects of the configura-
tion of the ports on an E-3 network module. The following E-3 commands are
available only when an E-3 network module is installed in the switch fabric.
The user can display the list of available subcommands by typing
e3 ? at the
port level.
localhost::configuration port>
e3 ?
emptycells loopback mode scrambling
show timing
B.8.2.1 Configuring E-3 Port Empty Cells
Empty cells are cells that are sent as “filler” or place holders when there is no
real data to send. By sending these cells, network modules that are synchro-
nous in nature can keep an even flow of traffic moving so that distributed tim-
ing can work properly. This command lets the user change the type of cells
sent as empty cells on an E-3 network module port. Enter the following
parameters:
localhost::configuration port e3>
emptycells <port> (idle | unassigned)
port Indicates the port number on which the type of
empty cells is to be changed.
idle|unassigned Indicates the type of cells this port sends for filler
when the port is not sending data.
Idle cells set the
CLP bit = 1 and unassigned cells set the CLP bit = 0.
Please refer to page 57 of the ATM Forum 3.0 Specifi-
cation for more information. Idle = invalid cell pat-
tern and unassigned = unassigned. The default is
unassigned . In general, it is not necessary to change
this variable from the default setting.