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Line 0 CTY showing Noise/Overruns

smcline06
Level 1
Level 1

I am a novice when it comes with Cisco and am currently learning for CCNA and have a question hopefully someone can answer. My home lab consists of 3 switches and 3 routers. Switches are 2950 series and Routers are 2650.

I have just setup an AS2511RJ so I can remote into this equipment via com port. When I perform a show line command I get this on all my equipment (please also note i have not configured the AS2511, just plugged all the ports in via rollover RJ45 cable.)

Cisco2950-1#sh line    

   Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns   Int

*    0 CTY              -    -      -    -    -      0     165     0/116547   -

*    1 VTY              -    -      -    -    -      7       0     0/0       -

     2 VTY              -    -      -    -    -      0       0     0/0       -

     3 VTY              -    -      -    -    -      0       0     0/0       -

     4 VTY              -    -      -    -    -      0       0     0/0       -

     5 VTY              -    -      -    -    -      0       0     0/0       -

     6 VTY              -    -      -    -    -      0       0     0/0       -

     7 VTY              -    -      -    -    -      0       0     0/0       -

     8 VTY              -    -      -    -    -      0       0     0/0       -

     9 VTY              -    -      -    -    -      0       0     0/0       -

    10 VTY              -    -      -    -    -      0       0     0/0       -

    11 VTY              -    -      -    -    -      0       0     0/0       -

    12 VTY              -    -      -    -    -      0       0     0/0       -

    13 VTY              -    -      -    -    -      0       0     0/0       -

    14 VTY              -    -      -    -    -      0       0     0/0       -

    15 VTY              -    -      -    -    -      0       0     0/0       -

    16 VTY              -    -      -    -    -      0       0     0/0       -

What I would like to know is Overruns and noise on the com port. What is this caused by (the Access Server?) and is this somthing serious?

1 Reply 1

Reza Sharifi
Hall of Fame
Hall of Fame

This is usually not a major issue.  Try clearing the line a couple of times and that should go away

use:

clear line console 0

HTH

Reza

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