Getting Switch Errors Need Help

ULWiz

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

cisco_trooper

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...

ULWiz

Well i understand that. But what is causing the error.

ULWiz

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

cisco_trooper

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...

darkuser

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...

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 .....

ULWiz

How do i clean crc errors i am a novice cisco person?

cisco_trooper

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...

keenon

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

Humper

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

I would check for speed/duplex mismatch then quickly move onto replacing the cable as I suspect thats what it is.

itdaddy

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

itdaddy

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...

Netstudent

looks kinda like a trunking mismatch to me. Maybe ISL with dot1Q.

Humper

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?

Netstudent

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.cbd
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.

Humper

Hmm never seen something like this...Will test it out at home here and see if I get the same results