Failed ping test

ashleyreed4218 · ‎10-10-2012

Hello All,

I am having a problem with a remote router. The problem is that there is no data being sent through the router, it is currently attached to a firewall.

Here is the output of a show int:

rt1 : router1:

rt1# show int fa0/0/0

FastEthernet0/0/0 is up, line protocol is up

Hardware is Fast Ethernet, address is c84c.7542.6c08 (bia c84c.7542.6c08)

Description: ASA VLAN10

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)

Half-duplex, 100Mb/s

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: 0/75/79395/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 0 bits/sec, 1 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

7465810 packets input, 1426330491 bytes, 0 no buffer

Received 5255 broadcasts, 0 runts, 0 giants, 0 throttles

35481998 input errors, 3711453 CRC, 3571276 frame, 0 overrun, 0 ignored

0 input packets with dribble condition detected

1414134 packets output, 154787166 bytes, 0 underruns

2416962 output errors, 17821972 collisions, 2 interface resets

0 unknown protocol drops

0 babbles, 1222685 late collision, 12598 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

So we tried to change the speed/duplex to:

rt1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

rt1(config)#int fa0/0/0

rt1(config-if)#duplex auto

Duplex will not be set until speed is set to non-auto value

rt1(config-if)#speed auto

And the output:

rt1# show int fa0/0/0

FastEthernet0/0/0 is up, line protocol is up

Hardware is Fast Ethernet, address is c84c.7542.6c08 (bia c84c.7542.6c08)

Description: ASA VLAN10

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)

Half-duplex, 100Mb/s

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: 0/75/79941/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 0 bits/sec, 1 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

7466356 packets input, 1426377447 bytes, 0 no buffer

Received 5255 broadcasts, 0 runts, 0 giants, 0 throttles

35481998 input errors, 3711453 CRC, 3571276 frame, 0 overrun, 0 ignored

0 input packets with dribble condition detected

1414134 packets output, 154787166 bytes, 0 underruns

2416962 output errors, 17821972 collisions, 2 interface resets

0 unknown protocol drops

0 babbles, 1222685 late collision, 12598 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Then, we connected a PC to Router 1 fa0/0/0:

rt1# show int fa0/0/0

FastEthernet0/0/0 is up, line protocol is up

Hardware is Fast Ethernet, address is c84c.7542.6c08 (bia c84c.7542.6c08)

Description: ASA VLAN10

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

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: 0/75/80982/0 (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

7467397 packets input, 1426473330 bytes, 0 no buffer

Received 5797 broadcasts, 0 runts, 0 giants, 0 throttles

35481998 input errors, 3711453 CRC, 3571276 frame, 0 overrun, 0 ignored

0 input packets with dribble condition detected

1414134 packets output, 154787166 bytes, 0 underruns

2416962 output errors, 17821972 collisions, 2 interface resets

0 unknown protocol drops

0 babbles, 1222685 late collision, 12598 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

And pinging either way fails, PC->Rtr and Rtr to PC

Any suggestions?

Thank you in advance,

AR

Sandeep Choudhary · ‎10-10-2012

Hi Ashly,

Just try this on port Fa0/0/0:

Config t

Int fa0/0/0

Speedd auto

Duplex auto

IF Still problem exits then see your cable, may its a faulty cable. change the cable and try again.

Two things we would check if I see the CRC/frame errors:

1.Both the end of the interfaces should have same speed and duplex settings.

2. Check the phyisical cabling , and are the two switches in the same room in DC or different to find out if there

is any media convertor in between . If yes then check the media convertor.

Note Remember- Most of the media convertor does not support fixed speed settings and people dont prefer doing that .so better to make it auto auto( speed and duplex). also check the other end of this interface , can you see the same errors ,

clear the counters(Clear counter fa0/0/0) and check again.

see this documnets: http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1904.html

Regards

Please rate if it helps.

ashleyreed4218 · ‎10-10-2012

Thank you,

I have tried to set the speed and duplex to auto. The cables have been examined and they are good.

I will let you know when we see the settings for the other end. My concern is also that when we connected a laptop to the interface it showed up/up but wouldn't ping as well. So not sure if the speed and duplex settings are what is making it not work.

Regards,

AR