Cisco 1720 Ethernet0 Port status

Posted on 2005-04-25
Last Modified: 2006-11-18
I have configured the ports on our 1720 with ip addresses etc,  fastethernet0 is up and pingable but Ethernet0 is not.

here is what is shown when i run 'show interface ethernet0'

Ethernet0 is up, line protocol is down
  Hardware is PQUICC Ethernet, address is 0004.dd0c.017d (bia 0004.dd0c.017d)
  Internet address is
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 128/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half-duplex, 10BaseT
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:09, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  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 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     318 input errors, 0 CRC, 0 frame, 0 overrun, 318 ignored
     0 input packets with dribble condition detected
     318 packets output, 21258 bytes, 0 underruns(0/0/0)
     318 output errors, 0 collisions, 2 interface resets
     0 babbles, 0 late collision, 0 deferred
     319 lost carrier, 0 no carrier

and i get the error message "%PQUICC_ETHER-1-LOSTCARR: Unit 0, lost carrier. Transceiver problem?"

any idea what i need to do to enable the port?  also the 'FDX' light isn't lit.  I have tried using two different patch cables, and none of them make link lights.

thank you!!!!
Question by:dosle
    LVL 32

    Accepted Solution

    Lots of errors and CRC input errors, do you have the right cable? IOs the cable good? how about the switch port settings, are they appropriate for the ethernet connection? 10M ? or is it set for 100M?

    LVL 1

    Author Comment

    The ethernet0 port was connected to a 100base-tx switch elsewhere, that was causing the problem.  connected it to a autosensing switch fixed the problem.  for once it was an easy solution.  thank you!

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Highfive Gives IT Their Time Back

    Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

    New Server  was moved from behind Router R2 f0/1 to behind router R1 int f/01 and has now address But we want users still to be able to connected to it by old IP. How to do it ? We can used destination NAT (DNAT).  In DNAT…
    I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

    761 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    13 Experts available now in Live!

    Get 1:1 Help Now