Step 4: Locate IDLE on a T3 Interface

Purpose

The T3 (DS-3) IDLE signal is a validly framed DS-3 signal with a payload consisting of a repeated 1100 signal. IDLE indicates that the line has not been provisioned for service.

Action

Have the carrier make sure that the line is provisioned for service.

Sample Output

user@router2> show interfaces t3-1/1/0

Physical interface: t3-1/1/0, Enabled, Physical link is Down

   Interface index: 13, SNMP ifIndex: 21

   Link-level type: PPP, MTU: 4474, Clocking: Internal

   Speed: T3, Loopback: None, CRC: 16, Mode: C/Bit parity

   Device flags   : Present Running Down

   Interface flags: Hardware-Down Point-To-Point SNMP-Traps

   Link flags     : Keepalives

   Input rate     : 0 bps (0 pps), Output rate: 0 bps (0 pps)

   Active alarms  : IDLE

   Active defects : IDLE

   
NOTE: For detailed definitions of the T3 (DS-3) error events (BPV, EXZ, LCV, PCV, and CCV) and performance parameters (LES, PES, PSES, CES, CSES, SEFS, and UAS), see RFC 2496.