GRE VPN TUNNEL NOT FUNCTIONING

[normanlee]

Hello, I am working for my Case Study Requirement in School, and it is taking a while and the GRE Tunnel is still not working on my end. May I ask you to see what the problem is on my file? Thanks!

[MHM Cisco World]

Share config here I can not open pkt

MHM

[normanlee]

Here is the Topology, for the configuration, I am using the default configuration for GRE VPN Tunneling

ip add <add><mask>
tunnel source <int>
tunnel dest <int>

But, when I do that, site-to-site connections are still unavailable

[Georg Pauwen]

Hello,

what are the passwords for the routers ?

[normanlee]

Hello! Here are the passwords

[Georg Pauwen]

Hello,

the passwords in the file do not seem to work. Can you write down the passwords for:

SG-PLDT and MLN2-GLOBE

routers, as these are the tunnel endpoints ?

[normanlee]

ISP Server Router
User Exec Mode
al0nz0
Privileged Exec Mode
1SPAdm1n
VTY
alonzo*1SP!

Central WAN Router
User Exec Mode
al0nz0
Privileged Exec Mode
C3NTRALAdm1n
VTY
alonzo*C3ntral!

SG PLDT
User Exec Mode
al0nz0
Privileged Exec Mode
SGPLDTAdm1n
VTY
alonzo*SGPLDT

MNL1 PLDT
User Exec Mode
al0nz0
Privileged Exec Mode
MNL1PLDTAdm1n
VTY
alonzo*MNL1PLDT!

MNL1 GLOBE
User Exec Mode
al0nz0
Privileged Exec Mode
MNL1GLOBEAdm1n
VTY
alonzo*MNL1Globe!

MNL2 GLOBE
User Exec Mode
al0nz0
Privileged Exec Mode
MNL2GLOBEAdm1n
VTY
alonzo*MNL2Globe!

SG Router
User Exec Mode
al0nz0
Privileged Exec Mode
SGAdm1n
VTY
alonzo*SG!

MNL1 Router
User Exec Mode
al0nz0
Privileged Exec Mode
MNL1Adm1n
VTY
alonzo*MNL!
VTP
alonzo*2023

MNL2 Router
User Exec Mode
al0nz0
Privileged Exec Mode
MNL2Adm1n
VTY
alonzo*MNL2!
VTP
alonzo*2023

Sure, here.

[Georg Pauwen]

Hello,

I cannot find the tunnels. Which routers are the tunnel endpoints ?

Also, the secret for the router below is not working:

Privileged Exec Mode
MNL1GLOBEAdm1n

[Georg Pauwen]

Better yet, just post the full configs of both tunnel endpoints....

[normanlee]

Hi, sorry here's the updated file, I have included your feedback. The VPN Tunnel should occur in SG router to Manila 1 and Manila 2 Router to Manila 1. My problem is that when I applied the GRE Tunnels, PCs from Manila 1 cannot ping PCs from SG/Manila 2. I hope you can fix this.  

I also included an updated PKT file and screenshots of the configurations.

[Georg Pauwen]

Hello,

I assume with SG router you mean the one below ? Unfortunately the passwords do not work on that router either. I would suggest to add simple passwords like 'cisco' to the routers you want us to check.

SG Router
User Exec Mode
al0nz0
Privileged Exec Mode
SGAdm1n
VTY
alonzo*SG!

[normanlee]

Here, I have removed the passwords for the devices with Tunnel Configurations.

On Singapore Building (SG)
On Manila 1 Building (MNL 1)
On Manila 2 Building (MNL2)

[Turn2]

Do you have routes on each switch pointing to the IP network(s) at the far end via the tunnel interface?