I can't ping between Routers in the same LAN....

labscloud

So I have a packet tracer lab I'm working on and I can only ping between the routers on each side of my switches, not across. All four routers are on the same network. There are 4 switches setup in between the 4 routers.

R1 can ping R2 vice versa, R3 can ping R4 vice versa.

Here is the config for each router:

R1#show int f0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0007.ec1a.d401 (bia 0007.ec1a.d401)
Internet address is 150.101.45.1/29
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); 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
9 packets input, 1152 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
9 packets output, 1152 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





R2#sho int f0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0001.c9a1.d601 (bia 0001.c9a1.d601)
Internet address is 150.101.45.2/29
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); 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
9 packets input, 1152 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
9 packets output, 1152 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



R3#sho int f0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0001.42ad.5a01 (bia 0001.42ad.5a01)
Internet address is 150.101.45.3/29
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); 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
28 packets input, 3584 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
29 packets output, 3712 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out



R4#sho int f0/0
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 0060.47ad.7501 (bia 0060.47ad.7501)
Internet address is 150.101.45.4/29
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); 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
29 packets input, 3712 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
28 packets output, 3584 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

jamesleecoleman

Sometimes packet tracer won't work even when things are set up correctly. Try doing a whole new lab and see what happens.

quickman007

Can you post the running config for each router?

rob42

... or better still, make the CPT file available via a file share. e.g Dropbox.

The Red Lights come to my attention...

labscloud

I'm not pinging out those interfaces though, I'm only pinging from the inside routers across the switches, not the serial link or going outwards. I'll add a dropbox file.

labscloud

https://www.dropbox.com/s/4e52btosy9p9rrh/ccnar%26s.pkt?dl=0

rob42

Set SW3 FA0/24 and SW4 FA0/24 to VLAN150.

CryptoQue

Can you provide what you have configured on switches 1-4 to eliminate layer 2 being the root cause of your issue?

labscloud

I got it guys! I didn't have the F0/24 ports on SW3 & SW4 configured as access ports with access to vlan 150.

So I added:

#switchport mode access
#switchport access vlan 150

I just assumed it was a L3 issue and not L2.

That did the trick on both switches!

CryptoQue

Glad you figured it out.

rob42

Thanks for posting the CPT file. I enjoyed the diagnostic challenge: It looks as if we both got there at the same time.

labscloud

Thanks man, it only took 2 minutes after pulling up the switches running configs and I compared them to SW1&2 and BOOM, there it was!

Prof Messar

If you want to pass A+ Cert please Text me at 443-680-7474 (NO CALLS!!!!!) Please Text name and which version you would like.

Mr.Robot255

yeah don't call that number

rob42

If you're wise, you won't text it either!