Nortel Networks Passport Module 8672A - Manual (Page 61)

Chapter 4 Managing the Passport 8672ATM Module with Device Manager 61
Using the Passport 8672ATM Module
Editing circuit parameters
To view and configure ATM PVC parameters:
1 On the device view, highlight a port.
2 Choose Edit > Port.
The Port dialog box opens with the Interface tab displayed ( Figure 12 on
page 52 ).
3 Click the ATM PVC tab.
The ATM PVC tab opens (Figure 17) .
ScrambleEnable Sets the port to scramble the data by clicking the box.
FramingMode Sets the framing for the port to:
• sonet, which means the Synchronous Optical Network format, the
standard format in North America.
• sdh, which means the Synchronous Digital Hierarchy clock format,
the standard format in Europe.
ClockSource Sets the clock source for the port to:
• loopTimed, which means clocking is derived from the SONET line.
• freeRunning, which means clocking is derived from the on-board
clock.
Note: If you have two connected Passport 8672ATM Modules, you
must set both to freeRunning or one to freeRunning and one to
loopTimed; do not set both to loopTimed.
LoopBackMode Sets the loopback mode to:
• off
• internal
• external
MacAddress MAC address assigned to a particular interface.
Table 9 ATM tab items (continued)
Item Description