Passport Module User Guide
80 Chapter 5 Managing the Passport 8672ATME Module with the CLI
209195-B
config atm command
Table 17 describes the parameters and variables for the config atm <
ports
> 
command.
Table 17 config atm command parameters and variables
Parameters and variables Description
action <action choice> Flushes a MAC, ARP, or IP table or triggers a RIP update. Choices are:
• none
• flushMacFdb
• flushArp
•flushIp
• flushAll
• triggerRipUpdate
number-vpi-bits <number-vpi-bits> • Sets the number of bits used to represent VPI. Enter integer from 0 
to 8.
• For OC-3c, 11 bits split between NumVpiBits and NumVciBits. 
NumVpiBits cannot exceed 6 bits for OC-3c. 
• For OC-12c, 13 bits split between NumVpiBits (default is 4) and 
NumVciBits (default is 9). NumVpiBits cannot exceed 8 bits for 
OC-12c.
scrambling <enable | disable> Enables or disables scrambling.
framing-mode <sonet | sdh> Sets the framing to:
• sonet (Synchronous Optical Network), the standard format used in 
North America.
• sdh ( Synchronous Digital Hierarchy), the standard format used 
worldwide except in North America.
clock-source <loop-timed | 
free-running>
Sets the transmit clock source to:
• loop-timed, which means clocking is derived from line.
• free-running, which means clocking is derived from on-board clock.
Note that if you have two connected 
Passport 8672ATME Modules, 
you must set both to free-running or one to loop-timed and one to 
free-running; do not set both to loop-timed. 
loop-back-mode <off | internal | 
remote>
Sets the loopback mode to:
•off
• internal
• external










