SmartSwitch ATM Switch Reference Manual 2-227
PortMode
PortMode
Use PortMode to manage transmission characteristics of switch ports.
Note
See Table 2-9 for supported I/O modules (and corresponding port types).
Operators
modify, show
Parameters
In the parameter tables below, text in parenthesis indicates parameters that appear only for particular port types. For
example, [EmptyCell] appears only if you use
modify portmode
or
show portmode
on 34 Mbps or 45 Mbps ports.
Input Parameter
Description
Field Size/Value
Default
[PortNumber]
Port number on the switch.
1A1 to 8B4 or All
All
[PortMode]
[Mode]
Port physical mode.
for 34 Mbps: ADM, ADM751, PLCP
for 45 Mbps: PLCP, HCS
for155 Mbps: SONET, SDH
for 622 Mbps: SONET, SDH
No default
[Scrambling]
(34, 45, 622 Mbps)
Enables or disables scrambling.
Scrambling is bit-level signal
processing applied to data streams
prior to transmission. Scrambling
can reduce signal interference.
for 34 Mbps: Off, On
for 45 Mbps: Off, On
for 622 Mbps: Off, On
Off
[EmptyCell]
(34, 45 Mbps)
Type of cells sent as filler when the
port is not sending data.
for 34 Mbps: Unassigned, Idle
for 45 Mbps: Unassigned, Idle
Unassigned
[Framing]
(45 Mbps only)
Type of framing used.
CBIT, CCHANNEL
[Length]
(45 Mbps only)
Line length for port (corresponds to
length of cable attached to port).
GT225 means the cable is greater
than 225 feet. LT225 means the
cable is less than 255 feet.
GT225, LT225
