Fastethernet Interface is down down ?

amb1s1amb1s1 Senior MemberMember Posts: 408
This is the config:
interface FastEthernet0/31
description ISP
switchport access vlan 25
switchport mode access
David G.
http://gomezd.com <
My Tshoot test Blog
http://twitter.com/ipnet255

Comments

  • amb1s1amb1s1 Senior Member Member Posts: 408
    I dis a no shut on the interface and still down.
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
  • remyforbes777remyforbes777 Senior Member Member Posts: 499
    if you have a status of down down that means that there is probably some physical issue. Showing us your config is not going to help. Thats not a full config anyhow. Show us sh inter fas 0/31
  • amb1s1amb1s1 Senior Member Member Posts: 408
    FastEthernet0/31 is down, line protocol is down (notconnect)
    Hardware is Fast Ethernet, address is 001f.c983.ac23 (bia 001f.c983.ac23)
    Description: ISP
    MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive set (10 sec)
    Auto-duplex, Auto-speed, media type is 10/100BaseTX
    input flow-control is off, output flow-control is unsupported
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input never, output never, output hang never
    Last clearing of "show interface" counters never
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    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 multicasts)
    0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 0 multicast, 0 pause input
    0 input packets with dribble condition detected
    0 packets output, 0 bytes, 0 underruns
    0 output errors, 0 collisions, 1 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier, 0 PAUSE output
    0 output buffer failures, 0 output buffers swapped out
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
  • shednikshednik sporadic member Member Posts: 2,005
    Like remy said there is definitely a physical layer issue check the cabling try bringing the interface down and back up. Maybe try another cable?
  • tech-airmantech-airman Senior Member Member Posts: 953
    amb1s1 wrote:
    This is the config:
    interface FastEthernet0/31
    description ISP
    switchport access vlan 25
    switchport mode access

    amb1s1,

    Questions:
    1. Do you have at least a Category 5 UTP cable connected to the FastEthernet 0/31 port of the switch?
      [list=1:5aeda29c6f]
    2. If yes, is the other end of the Category 5 UTP cable connected to a FastEthernet NIC of a host that is powered on?
    [/list:o:5aeda29c6f]
  • amb1s1amb1s1 Senior Member Member Posts: 408
    It is a bad port because when I plug the cable on another swithc with the same config, the interface is showing up/up.
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
  • tech-airmantech-airman Senior Member Member Posts: 953
    amb1s1 wrote:
    It is a bad port because when I plug the cable on another swithc with the same config, the interface is showing up/up.

    amb1s1,

    Since you configured that switch port as a vlan access port, that port should be connected to a host and not another switch.
  • amb1s1amb1s1 Senior Member Member Posts: 408
    I have a host connect to that port, not a switch.
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
  • mikej412mikej412 Cisco Moderator Member Posts: 10,086 ■■■■■■■■■■
    What do you get as the output from a show interface FastEthernet0/31 switchport command?
    :mike: Cisco Certifications -- Collect the Entire Set!
  • amb1s1amb1s1 Senior Member Member Posts: 408
    mikej412 wrote:
    What do you get as the output from a show interface FastEthernet0/31 switchport command?
    FastEthernet0/31 is down, line protocol is down (notconnect)
    Hardware is Fast Ethernet, address is 001f.c983.ac23 (bia 001f.c983.ac23)
    Description: ISP
    MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive set (10 sec)
    Auto-duplex, Auto-speed, media type is 10/100BaseTX
    input flow-control is off, output flow-control is unsupported
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input never, output never, output hang never
    Last clearing of "show interface" counters never
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    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 multicasts)
    0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 0 multicast, 0 pause input
    0 input packets with dribble condition detected
    0 packets output, 0 bytes, 0 underruns
    0 output errors, 0 collisions, 1 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier, 0 PAUSE output
    0 output buffer failures, 0 output buffers swapped out
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
  • tech-airmantech-airman Senior Member Member Posts: 953
    amb1s1 wrote:
    mikej412 wrote:
    What do you get as the output from a show interface FastEthernet0/31 switchport command?
    FastEthernet0/31 is down, line protocol is down (notconnect)
    Hardware is Fast Ethernet, address is 001f.c983.ac23 (bia 001f.c983.ac23)
    Description: ISP
    MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive set (10 sec)
    Auto-duplex, Auto-speed, media type is 10/100BaseTX
    input flow-control is off, output flow-control is unsupported
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input never, output never, output hang never
    Last clearing of "show interface" counters never
    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
    Queueing strategy: fifo
    Output queue: 0/40 (size/max)
    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 multicasts)
    0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 0 multicast, 0 pause input
    0 input packets with dribble condition detected
    0 packets output, 0 bytes, 0 underruns
    0 output errors, 0 collisions, 1 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier, 0 PAUSE output
    0 output buffer failures, 0 output buffers swapped out

    If you state that you've got a host connected to fastethernet port 0/31, then why does it say "line protocol is down (notconnected)?"
  • amb1s1amb1s1 Senior Member Member Posts: 408
    The switch was replaced and now is up/up, so the problem was a bad port.
    David G.
    http://gomezd.com <
    My Tshoot test Blog
    http://twitter.com/ipnet255
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