So, to configure a new tunnel, how many address do I have to reserve? 2 IP address (one for the source and another for the destination )or 4 IP address like the first tunnel configured and in that case, what are the 2 IP address left?

Thanks a lot for your help

Basic subnetting of your first tunnel:-

10.1.1.1 255.255.255.252 = /30 network

Binary 128 64 32 16 8 4 2 1

Mask 128 192 224 249 248 252| 254 255

| 0 0 =0 Network

| 0 1 =1 First IP Address

| 1 0 =2 Second IP Address

| 1 1 =3 Broadcast

Now for your next available network using /30

Binary 128 64 32 16 8 4 2 1

Mask 128 192 224 249 248 252| 254 255

1 | 0 0 =4 Network

1 | 0 1 =5 First IP Address

1 | 1 0 =6 Second IP Address

1 | 1 1 =7 Broadcast

And so on.

Ok, I understand.

Another question: you said that when a PC connects to the remote network, it gets an IP address from the remote IP subnet, but, how does it gets it, if there is no DHCP activated on the router?

Thanks

There is some confusion here - my first reply to your question was:-

Your original question - When a PC from the LAN of this router try to connect to the remote router using the tunnel, what IP address do it use?

My response - You use the remote end IP subnet. You need to make sure you have static/dynamic routes in place for the tunnel.

I think I understood your response, and I do have static routes, like this:

ip route 192.168.3.0 255.255.255.0 10.1.1.2

But what I was wondering is which address from the subnet 192.168.3.0 do I get when I connect from a local PC to this remote end subnet.

Thanks and regards

Your question makes no sense? Are you asking which IP address you should use to connect to a remote end device? If so - use the IP address the remote end device is configured with.

I will try to explain myself better, if I want to connect from my local PC (IP addr: 192.168.5.10) to a remote PC with have the IP address 192.168.3.25 I need to have in my local PC an IP address from that subnet, (i.e. 192.168.3.30), or Am I wrong?

All right,

Thanks a lot for your help.

Regards

Marian

np - glad to help.