Link to home
Start Free TrialLog in
Avatar of vmagan
vmaganFlag for United States of America

asked on

Cisco input errors increasing

Hi guys,

receiving input errors on int fa 0/0 on a cisco router. I have tried replacing the cable, making sure that both sides were set to full duplex with 100speed and even tried changing from port fa 0/2 on the switch to fa 0/1 and still increasing on input errors.

What can be causing this issue. I believe that this is causing us to lose internet briefly.

Any suggestions please?

Router1841#sho int fa 0/0
FastEthernet0/0 is up, line protocol is up
  Hardware is Gt96k FE, address is 001d.7029.c1ba (bia 001d.
  Description: to Cisco 3560 Switch
  Internet address is 10.34.95.254/24
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 01:37:09
  Input queue: 1/75/3/0 (size/max/drops/flushes); Total outp
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 13000 bits/sec, 14 packets/sec
  5 minute output rate 8000 bits/sec, 4 packets/sec
     80570 packets input, 7795705 bytes
     Received 62606 broadcasts, 0 runts, 0 giants, 0 throttl
     37 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     21924 packets output, 4244835 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

Switch_3560#sho int fa 0/1
FastEthernet0/1 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0021.56ab.6c03 (bia 0021.56ab.6c03)
  Description: LINK TO ROUTER FA 0/0
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 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 00:00:09, output 00:00:01, 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 8000 bits/sec, 6 packets/sec
  5 minute output rate 13000 bits/sec, 13 packets/sec
     23572 packets input, 4700643 bytes, 0 no buffer
     Received 113 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 113 multicast, 0 pause input
     0 input packets with dribble condition detected
     91768 packets output, 9225751 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 PAUSE output
     0 output buffer failures, 0 output buffers swapped out
Switch_3560#

Switch_3560#sho cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
Router_1841  Fas 0/1           172          R S I     1841      Fas 0/0

let me know if you need me to post anything else.

thanks
SOLUTION
Avatar of Matt V
Matt V
Flag of Canada image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of vmagan

ASKER

That is exactly what I am going to try. I am remote, but I have already made the changes to fa0/1 just waiting for someone to move the cable to that port.

Could that be causing signal to drop?

I will keep you posted.
Just trying to rule out a bad port on the router, or something worse on the switch that is affecting all switch ports.
Avatar of vmagan

ASKER

Changed to fa 0/1 and input error is now increasing on that port. So we could probably rule out the router ports being faulty.

Router1841#sho int fa 0/1
FastEthernet0/1 is up, line protocol is up
  Hardware is Gt96k FE, address is 001d.7029.c1bb (bia 001d.7029.c1bb)
  Internet address is 10.34.95.254/24
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 23:24:34
  Input queue: 1/75/1/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 41000 bits/sec, 27 packets/sec
  5 minute output rate 37000 bits/sec, 18 packets/sec
     18324 packets input, 4246053 bytes
     Received 6824 broadcasts, 0 runts, 0 giants, 0 throttles
     5 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     20458 packets output, 4290376 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
Router1841#

what can we check for on the switch?
Avatar of Infamus
Infamus

can you post int config on router fa0/1 and switch fa0/1?
Avatar of vmagan

ASKER

they are  posted  above.  is  there a  specific  config  you  are  looking  for?
i meant the running config.

sh run int fa0/1
and try to reset the interface on the switch just in case and clear the counter.
config t
int fa0/1
shut
(wait for 5 sec)
no shut
Avatar of vmagan

ASKER

I reset the two different ports late last night when i was on site and still a no go.


here are the requested shw cmds.


Router_1841#sho run int fa 0/1
Building configuration...

Current configuration : 159 bytes
!
interface FastEthernet0/1
 ip address 10.34.95.254 255.255.255.0
 ip helper-address 10.4.174.1
 ip helper-address 10.226.72.194
 speed 100
 full-duplex
end



Switch3560#sho run int fa 0/1
Building configuration...

Current configuration : 140 bytes
!
interface FastEthernet0/1
 description LINK TO ROUTER FA 0/0
 switchport mode access
 speed 100
 duplex full
 spanning-tree portfast
end

Switch3560#
Few more questions...

Why do you have iphelper address configured on router fa0/1?

Is CEF enabled on the router?

How is the CPU utilization on the router?



Also add these commands under router's int fa0/1

 no ip redirects
 no ip unreachables
 no ip proxy-arp
Also add these :

ip route-cache cef
ip route-cache
ASKER CERTIFIED SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial