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ATM tab fields


Item Description
Index
Interface Index.
MediaType
mmf (multimode fiber), smf (single-mode fiber), or ds3 (direct signal, level 3)
LineSpeed
For OC-3c, the operating speed is 155.52 Mb/s; for OC-12c, it is 622.08 Mb/s; for DS-3 it is 44.736 Mb/s.
NumVpiBits
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.
For DS-3, 12 bits split between NumVpiBits (default is 4) and NumVciBits (default is 8). NumVpiBitscannot exceed 7bits for DS-3.
NumVciBits
This field is read only. It takes remaining bits from NumVpiBits. For example, if NumVpiBits is 3 for OC-3c, then NumVciBits is 8.
ScrambleEnable
Sets the port to scramble the data by clicking the box.
FramingMode
Sets the framing for the port 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.
  • Any of the following Digital Signal, Level 3 (DS-3) formats:
  • -- ds3CbitAdm
    -- ds3CbitPlcp
    -- ds3M23Adm
    -- ds3M23Plcp
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 s, 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
  • ds3PayloadLoop
  • ds3DiagLoop
  • ds3LineLoop
MacAddress
MAC address assigned to a particular interface.

See also:


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