Cabletron Systems MMAC-Plus SFCS-1000, Configuration Manual

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B-72
AMI Configuration Commands
IdleCells Shows 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 Specification
for more information. Idle = invalid cell pattern and
unassigned = unassigned. The default is
unas-
signed . In general, it is not necessary to change this
variable from the default setting.
B.8.4.7 Configuring the DS-3 Port Timing
This command allows the user to change the timing source on a port on a
DS-3 network module. Enter the following parameters:
localhost::configuration port ds3>
timing <port> (network | internal)
port Indicates the port number from which the timing is
being derived.
network|internal Designates the source of the transmit clock. For all
network modules,
network means that the timing
for this port is derived externally from the incoming
clock on this port.
Internal means that the timing is
derived from either the on-board crystal oscillator or
is derived from a specific port number on a Series C
network module that is defined by the user. If set to a
specific port number, the transmit clock is derived
from that port if available. If the port source becomes
unavailable, the on-board crystal takes over as the
transmit clock source.
B.8.4.8 Configuring DS-3 Port Line Length
This command lets the user change the line length of a DS-3 port to correspond
to the physical cable attached to that port. Enter the following parameters:
localhost::configuration port ds3>
length <port> (Lt225 | Gt225)
port Indicates the port number on which the line length is
to be changed.
Lt225 Use if the physical cable is shorter than 225 ft.
Gt225 Use if the physical cable is greater than 225 ft. This is
the default.