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Cisco Bug: CSCul87365 - Interfaces have line and protocol status up despite not being connected

Last Modified

Aug 01, 2018

Products (1)

  • Cisco Network Convergence System 6000 Series Routers

Known Affected Releases

5.0.1.LC 5.2.1.BASE

Description (partial)

Symptom:
Unconnected interfaces show up status:

HundredGigE0/0/0/2 is up, line protocol is up 
  Interface state transitions: 1
  Hardware is HundredGigE, address is e4d3.f1a4.f29f (bia e4d3.f1a4.f29f)
  Description: R10:hu0-3-0-1
  Internet address is Unknown
  MTU 1514 bytes, BW 100000000 Kbit (Max: 100000000 Kbit)
     reliability 255/255, txload 0/255, rxload 0/255
  Encapsulation ARPA,
  Full-duplex, 100000Mb/s, 100GBASE-SR10, link type is force-up
  output flow control is off, input flow control is off
  loopback not set,
  ARP type ARPA, ARP timeout 04:00:00
  Last input never, output never
  Last clearing of "show interface" counters never
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 total input drops
     0 drops for unrecognized upper-level protocol
     Received 0 broadcast packets, 0 multicast packets
              0 runts, 0 giants, 0 throttles, 0 parity
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 total output drops
     Output 0 broadcast packets, 0 multicast packets
     0 output errors, 0 underruns, 0 applique, 0 resets
     0 output buffer failures, 0 output buffers swapped out
     1 carrier transitions

Conditions:
Interface is not connected but in "no shut" state.
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