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POINT TO POINT TUNNEL

atul.kumar323
Level 1
Level 1

Hi guys,

First time here

i am having trouble with the point to point tunnel that i configured on the two routers

When i do sh ip int brief, tunnel on the both routers is whowing up but i am not able to ping the destination ip adddresses on the both router and lan ips

don't know where i am going wrong

**************************************************************

interface Tunnel0

bandwidth 1000

ip address 10.2.0.1 255.255.255.252

ip virtual-reassembly

ip tcp adjust-mss 1460

tunnel source FastEthernet4.4090

tunnel destination 172.17.3.140

****************************************************************

interface Tunnel0

description Tunnel to Auckland HO (CHEMAK1)

bandwidth 1000

ip address 10.2.0.2 255.255.255.252

ip virtual-reassembly

ip tcp adjust-mss 1460

tunnel source Dialer0

tunnel destination 172.23.2.206

***********************************************************************

chemak2m001#ping 172.17.2.206

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.17.2.206, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

***********************************************************************************

CHEMAK1R001#ping 172.17.3.140

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.17.3.140, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

Please help

Atul

9 Replies 9

Ali Norouzi
Level 1
Level 1

1- Add Keepalive command under the interface tunnel. keepalive 5 2 is ok. After timer expires it will show you if the tunnel is realy up o not.

2- Ping the tunnel destination with IP of tunnel source as source of the ping. It will show you that the path status.

hi Ali, thanks for the reply.

I did keepalive 5 2 and that made the tunnel protocol down.

still going throug the pain

Hi Atul,

Yiu can ping the tunnel ip address......(In ur case: 10.2.0.1 or 2), and you can not ping the provider ip address.

If you want to test the tunnel then try to ping tunnel ip address.

one more command to test tunnel:

test int tunnel 0

REgards

please rate if it helps.

Hi Sandeep,

Cant ping the tunnel ip address as well.

i used this command test int tunnel 0

chemak2m001# test int tu0

... Failed - not connected problem

1 interfaces: 0 passed, 1 failed, 0 skipped, 0 untestable

Can you paste the output of this coomand: sh int tunnel0 from both end.

Or just configure like this:

interface Tunnel1

desc bandwidth 1000

ip address 10.2.0.1 255.255.255.252

ip mtu 1300

ip tcp adjust-mss 1260

tunnel source xxx.xxx.xxx.xxx

tunnel destination xxx.xxx.xxx.xxx

means reduce the tcp adjust value .

If still not works then please paste the whole config of routers.(To get the whole overview)

Regards

Please rate if it helps.

Hi Sandeep,

As soon as i have removed the keep alive from the tunnel interface, tunnel come back up

and when i run this test int tu0 command, it give me the following result

CHEMAK1R001#test in tu0

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!! Passed

1 interfaces: 1 passed, 0 failed, 0 skipped, 0 untestable

It means your tunnel is working.....

try to ping your tunnel ip address??

Regards

still can't ping the tunnel ip address 10.2.0.1 or 10.2.0.2.

even if the test command is showing me pass

can you paste the config of the interface ???

step1: just check with your provide(Is the ip address from provider is online.)

if still fails then please paste ur whole config.

Regards

please rate if it helps.

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