Solved: Issue with INPUT errors, CRC and Frames - Page 2

raj · ‎02-02-2017

Hello Experts,

From last One week I am fully facing the issue with INPUT errors, CRC and Frames. Please find the below details. That is affected on my job, even lot of times I am checking the pots and cables and duplex, speed but continuously errors are increasing.I am only the person of in my organization, Please help me to find out the problem.
Now I am using CISCO 2911 router, every interfaces getting the errors like that only

Router#sh int g0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is 00c8.8b61.5371 (bia 00c8.8b61.5371)
Internet address is 125.99.247.249/29
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 2/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 100Mbps, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters 01:32:49
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 102000 bits/sec, 59 packets/sec
5 minute output rate 904000 bits/sec, 97 packets/sec
     232879 packets input, 50659461 bytes, 0 no buffer
     Received 1833 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     14546 input errors, 7274 CRC, 6472 frame, 0 overrun, 0 ignored
     0 watchdog, 288 multicast, 0 pause input
     343302 packets output, 368712945 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     185 unknown protocol drops
     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
Router#

Leo Laohoo · ‎02-03-2017

GigabitEthernet0/0 is up, line protocol is up
reliability 254/255, txload 1/255, rxload 2/255

Gi0/0 line errors is caused by a faulty cable.

Why are all these ports hard-coded with the duplex and speed settings?

raj · ‎02-03-2017

Sorry Sir,

I was configured myself only, Because I am learning CCNA R&S myself only, here nobody is there to guide me. That is the actual reason.

Thank you very much for your support.

So, now coming to the issue I understood 2 things,

1.Right now shall I change the cable

2.And change the Duplex and Speed is auto right

I think that is enough if I am not wrong.

Please let me know if there is anything wrong.

And one more thing is interface G0/0 is connected to ISP so I need to change the both ends Duplex and Speed is AUTO.

Leo Laohoo · ‎02-03-2017

Always start with configuring the speed and duplex setting to auto and then observe if the ports auto-negotiate correctly or not.

raj · ‎02-05-2017

Hello Sir, Good Morning

I was changed the Duplex and Speed, both are AUTO. But whenever I am taking the show interface G0/0 command at that time it is showing the Duplex & Speed is Full & 100.

Then how to resolve this issue?

But I am not getting the any errors like Input errors, CRC and Frames. Except unknown protocol drop.

Please find the below details,

Router#sh run int g0/0
Building configuration...

Current configuration : 200 bytes
!
interface GigabitEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
ip address 125.99.247.246 255.255.255.252
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
end

Router#sh int g0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is 00c8.8b61.5370 (bia 00c8.8b61.5370)
Description: $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
Internet address is 125.99.247.246/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 100Mbps, media type is RJ45
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 03:30:56
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 1483000 bits/sec, 143 packets/sec
5 minute output rate 147000 bits/sec, 102 packets/sec
     1517811 packets input, 1746726597 bytes, 0 no buffer
     Received 633 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 633 multicast, 0 pause input
     1063933 packets output, 191388691 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     422 unknown protocol drops
     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
Router#sh clock
*03:38:49.029 UTC Mon Feb 6 2017

Regards,

Raj

Leo Laohoo · ‎02-05-2017

I was changed the Duplex and Speed, both are AUTO. But whenever I am taking the show interface G0/0 command at that time it is showing the Duplex & Speed is Full & 100.

It's OK. Look at the interface counters. The line errors have been "0" for the last 3 hours and 30 minutes.

raj · ‎02-06-2017

Hello Sir, Good Morning

What I am trying to say is, I did all required changes like Duplex and speed is AUTO.

But whenever I am taking the command show interface G0/0 & f0/0/1, at that time it is showing the Duplex- FULL and Speed-100. I want to see Duplex & Speed both are Auto.

Because of other end clients also still able to see Duplex & Speed is FULL and 100. they told me to change the AUTO.

How I will do that one?

See below details,

Router#sh run int g0/0
Building configuration...

Current configuration : 200 bytes
!
interface GigabitEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
ip address 125.99.247.246 255.255.255.252
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
end

Router#sh run int f0/0/1
Building configuration...

Current configuration : 99 bytes
!
interface FastEthernet0/0/1
ip address 172.17.122.1 255.255.255.0
duplex auto
speed auto
end

Router#sh int g0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is 00c8.8b61.5370 (bia 00c8.8b61.5370)
Description: $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
Internet address is 125.99.247.246/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 100Mbps, media type is RJ45
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d01h
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 1377000 bits/sec, 146 packets/sec
5 minute output rate 101000 bits/sec, 94 packets/sec
     8027626 packets input, 464539677 bytes, 0 no buffer
     Received 4661 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 4661 multicast, 0 pause input
     5877256 packets output, 1057359020 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     3107 unknown protocol drops
     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
Router#sh int f0/0/1
FastEthernet0/0/1 is up, line protocol is up
Hardware is FastEthernet, address is c84c.75e4.0e7e (bia c84c.75e4.0e7e)
Internet address is 172.17.122.1/24
MTU 1500 bytes, BW 100000 Kbit/sec, 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 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 1d01h
Input queue: 0/75/31290/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 291000 bits/sec, 172 packets/sec
5 minute output rate 341000 bits/sec, 201 packets/sec
     2370219 packets input, 488575767 bytes
     Received 109288 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     2852573 packets output, 612326034 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     3109 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
Router#sh cl
Router#sh clo
Router#sh clock
*02:02:01.875 UTC Tue Feb 7 2017
Router#

Regards,

Raj

Leo Laohoo · ‎02-06-2017

It could be a bug.

Try rebooting the router and see if the output changes.

raj · ‎02-06-2017

Hi Sir,

I did router rebooted twice, but still it is showing same. But I am changing the

1.Duplex and Speed is Full and 100, at that time it is showing correctly like (Duplex-Full & Speed-100)

2.Duplex and speed is half and 100, at that time also it is showing correctly like (Duplex-Half & Speed-100)

3.But coming from Auto, at that time it is showing like (Duplex-Full & Speed- 100)

This is what I am getting exactly.

Please suggest me any possible reasons?

Regards,

Raj

solutionist · ‎09-04-2018

This command is gold!!!!

played around with it and found show controllers ethernet-controller fa 1/11

Which is amazing!