Getting Switch Errors Need Help

ULWizULWiz Member Posts: 722
in CCIE
Can anyone tell me what these errors mean?
Its on my 2924 switch?

03:36:28: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:40:13: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:42:21: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:44:08: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:45:38: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:47:39: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:48:46: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
03:50:43: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
CompTIA A+ Nov 25, 1997
CompTIA Network+ March 7, 2008
MCTS Vista 620 June 14, 2008
MCP Server 290 Nov 15, 2008
MCP Server 291 In Progress (Exam 12/28/09)
Cisco CCENT In Progress
MCP Server 291 In Progress
C|EH In Progress
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  • cisco_troopercisco_trooper Member Posts: 1,441 ■■■■□□□□□□
    ULWiz wrote:
    Can anyone tell me what these errors mean?
    Its on my 2924 switch?

    03:36:28: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:40:13: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:42:21: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:44:08: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:45:38: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:47:39: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:48:46: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:50:43: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors


    It means FastEthernet0/9 is experiencing errors... icon_lol.gif
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  • ULWizULWiz Member Posts: 722
    Well i understand that. But what is causing the error.
    CompTIA A+ Nov 25, 1997
    CompTIA Network+ March 7, 2008
    MCTS Vista 620 June 14, 2008
    MCP Server 290 Nov 15, 2008
    MCP Server 291 In Progress (Exam 12/28/09)
    Cisco CCENT In Progress
    MCP Server 291 In Progress
    C|EH In Progress
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  • ULWizULWiz Member Posts: 722
    Here is a sho ip int of that interface
    does the crc have anything to do with this.


    FastEthernet0/9 is up, line protocol is up
    Hardware is Fast Ethernet, address is 0006.53ac.3649 (bia 0006.53ac.3649)
    MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
    reliability 255/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive not set
    Full-duplex, 100Mb/s, 100BaseTX/FX
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input never, output 00:00:00, 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
    232942 packets input, 73391384 bytes
    Received 3511 broadcasts, 0 runts, 0 giants, 0 throttles
    1584 input errors, 802 CRC, 782 frame, 0 overrun, 0 ignored
    0 watchdog, 2117 multicast
    0 input packets with dribble condition detected
    367467 packets output, 419670640 bytes, 0 underruns
    0 output errors, 0 collisions, 3 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier
    0 output buffer failures, 0 output buffers swapped out
    CompTIA A+ Nov 25, 1997
    CompTIA Network+ March 7, 2008
    MCTS Vista 620 June 14, 2008
    MCP Server 290 Nov 15, 2008
    MCP Server 291 In Progress (Exam 12/28/09)
    Cisco CCENT In Progress
    MCP Server 291 In Progress
    C|EH In Progress
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  • cisco_troopercisco_trooper Member Posts: 1,441 ■■■■□□□□□□
    ULWiz wrote:
    Well i understand that. But what is causing the error.

    Try plugging that host device into another port on the switch. If the errors do not follow the device, then plug another device into fa0/9. If you again start receiving errors on fa0/9 then that port is likely bad. Trial and error. Change only one thing at a time until you can determine where the problem actually is. From there you can decide WHAT the problem is...
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  • darkuserdarkuser Member Posts: 620 ■■■□□□□□□□
    cisco_trooper wrote:
    ULWiz wrote:
    Can anyone tell me what these errors mean?
    Its on my 2924 switch?

    03:36:28: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:40:13: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:42:21: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:44:08: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:45:38: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:47:39: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:48:46: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:50:43: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors


    It means FastEthernet0/9 is experiencing errors... icon_lol.gif

    i concur .....

    and this line seems interesting ???

    1584 input errors, 802 CRC, 782 frame, 0 overrun, 0 ignored

    crc's and framing errors
    sounds like a physical line problem to me .....
    rm -rf /
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  • ULWizULWiz Member Posts: 722
    How do i clean crc errors i am a novice cisco person?
    CompTIA A+ Nov 25, 1997
    CompTIA Network+ March 7, 2008
    MCTS Vista 620 June 14, 2008
    MCP Server 290 Nov 15, 2008
    MCP Server 291 In Progress (Exam 12/28/09)
    Cisco CCENT In Progress
    MCP Server 291 In Progress
    C|EH In Progress
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  • cisco_troopercisco_trooper Member Posts: 1,441 ■■■■□□□□□□
    ULWiz wrote:
    How do i clean crc errors i am a novice cisco person?

    Dont forget to try a different cable. As dark said, may only be a physical layer problem...
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  • keenonkeenon Member Posts: 1,922 ■■■■□□□□□□
    ULWiz wrote:
    Can anyone tell me what these errors mean?
    Its on my 2924 switch?

    03:36:28: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:40:13: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:42:21: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:44:08: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:45:38: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:47:39: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:48:46: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:50:43: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors

    have you verified the device on the other side of the link? speed/duplex if so change switch port, then change cable to switch and to end station. Past that update code to last version available for the switch. once the reboot ( look at the post messages while its coming up) on the new code finishes check the port again if still the same shut it down and label it as bad icon_wink.gif
    Become the stainless steel sharp knife in a drawer full of rusty spoons
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  • HumperHumper Member Posts: 647
    keenon wrote:
    ULWiz wrote:
    Can anyone tell me what these errors mean?
    Its on my 2924 switch?

    03:36:28: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:40:13: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:42:21: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:44:08: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:45:38: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:47:39: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:48:46: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors
    03:50:43: %LINK-4-ERROR: FastEthernet0/9 is experiencing errors

    have you verified the device on the other side of the link? speed/duplex if so change switch port, then change cable to switch and to end station. Past that update code to last version available for the switch. once the reboot ( look at the post messages while its coming up) on the new code finishes check the port again if still the same shut it down and label it as bad icon_wink.gif

    I would check for speed/duplex mismatch then quickly move onto replacing the cable as I suspect thats what it is.
    Now working full time!
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  • itdaddyitdaddy Member Posts: 2,089 ■■■■□□□□□□
    UlWiz

    did you get it figure out? my 2924 does the same thing or did
    i did mess with the speeds and whether it was full duplex or half and
    are you trunking it with a 2924?????

    I think there are issues with 2950 and 2924 trunking

    I think i just gave up (i knwo i am a wimp)_ when with my 2950s and no issues
    trunkiing....
    but ihad same error with teh 2924 trunking with my 2950 so i bought another 2950
    and practice truking and etherchannels and vtp domain and stp stuff
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  • itdaddyitdaddy Member Posts: 2,089 ■■■■□□□□□□
    yeah very well could be a bad port; i think that is what i did and tried my other ports on my 2924 trunking with my 2950and I think i remeber gettin to work...
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    looks kinda like a trunking mismatch to me. Maybe ISL with dot1Q.
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • HumperHumper Member Posts: 647
    Netstudent wrote:
    looks kinda like a trunking mismatch to me. Maybe ISL with dot1Q.

    Trunk mismatch can cause CRC and input errors? interesting........can you explain this?
    Now working full time!
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  • NetstudentNetstudent Member Posts: 1,693 ■■■□□□□□□□
    00:03:46: %LINK-4-ERROR: FastEthernet0/24 is experiencing errors
    00:04:46: %LINK-4-ERROR: FastEthernet0/24 is experiencing errors
    SW3#
    00:05:46: %LINK-4-ERROR: FastEthernet0/24 is experiencing errors


    W3#show int fa0/24 switchport
    Name: Fa0/24
    Switchport: Enabled
    Administrative mode: trunk
    Operational Mode: trunk
    Administrative Trunking Encapsulation: isl
    Operational Trunking Encapsulation: isl
    Negotiation of Trunking: Disabled
    Access Mode VLAN: 0 ((Inactive))
    Trunking Native Mode VLAN: 1 (default)
    Trunking VLANs Enabled: ALL
    Trunking VLANs Active: 1,10,20,30,44
    Pruning VLANs Enabled: 2-1001



    FastEthernet0/24 is up, line protocol is up
    Hardware is Fast Ethernet, address is 0002.7d37.cbd8 (bia 0002.7d37.cbdicon_cool.gif
    MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
    reliability 156/255, txload 1/255, rxload 1/255
    Encapsulation ARPA, loopback not set
    Keepalive not set
    Auto-duplex (Full), Auto Speed (100), 100BaseTX/FX
    ARP type: ARPA, ARP Timeout 04:00:00
    Last input 00:05:15, output 00:00:00, 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 2000 bits/sec, 0 packets/sec
    5 minute output rate 1000 bits/sec, 5 packets/sec
    153 packets input, 102851 bytes
    Received 152 broadcasts, 0 runts, 0 giants, 0 throttles
    1244 input errors, 1244 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 152 multicast
    0 input packets with dribble condition detected
    1688 packets output, 57377 bytes, 0 underruns
    0 output errors, 0 collisions, 1 interface resets
    0 babbles, 0 late collision, 0 deferred
    0 lost carrier, 0 no carrier


    PEER
    SW2#show int fa0/24 switchport
    Name: Fa0/24
    Switchport: Enabled
    Administrative mode: trunk
    Operational Mode: trunk
    Administrative Trunking Encapsulation: dot1q
    Operational Trunking Encapsulation: dot1q
    Negotiation of Trunking: Disabled
    Access Mode VLAN: 0 ((Inactive))
    Trunking Native Mode VLAN: 1 (default)
    Trunking VLANs Enabled: ALL
    Trunking VLANs Active: 1,2,4,10,20,30,44
    Pruning VLANs Enabled: 2-1001

    Could have something to do with trunking negotiation with dot1Q which isn't tagged natively versus ISL that encapsulates 30 bytes on all frames.
    There is no place like 127.0.0.1 BUT 209.62.5.3 is my 127.0.0.1 away from 127.0.0.1!
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  • HumperHumper Member Posts: 647
    Hmm never seen something like this...Will test it out at home here and see if I get the same results :)
    Now working full time!
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