PLEASE HELP - GRE tunnel
here is my problem:
I have 3 sites: A, B and C at different locations
For now more than 3 days I have a very bad link from A to C. The
providers at A and C are trying to solve the problem but scince we need
to work I need a solution for this problem.
The problem occurs only between A and C. Connections between A and B
and between B and C are ok.
A is a network equipped with a Cisco 2651 with public IP's available
B is a network equipped with a Cisco 2621 with public IP's available
C is a Windows 2000 SP4 server (colocation)
Cisco 2651 at A has two FE interfaces (one for LAN and one for WAN
which is connected to ISP's router/DSL-Modem)
Cisco 2621 at B has a similar configuration
Server at C is connected to ISP's/hoster's network
At A and B no routing protocols are used, i.e. the routers have only
"ip default-gateway" and "ip route 0.0.0.0 0.0.0.0 <IP address of ISP's
At C also no protocols are used, the server has "normal" settings for
the LAN-Connection with following parameters:
As I have understood a GRE-tunnel between A and B could solve my
problem at least for some days until the connection problem between A
and C is solved.
So the idea is to let some public IP-addresses from A appear as public
IP addresses from B
i.e. something like this:
1. a GRE tunnel between A and B is created
2. on A all traffic for C will be routed into the tunnel
3. on B all traffic from the tunnel will be routed to C from a
B-network's public IP
4. on C the configuration will be changed so that it will now
comunicate with a public IP address on B instead of A
If this solution is possible could anyone provide me with a sample
configuration for A and B routers please ?
Thanks in advance
Re: PLEASE HELP - GRE tunnel
> Thanks in advance
> Best regards
> Alexej Buchholz
it seems like the connection problem between site A and server C is
But anyway if anyone could help me build such a configuration for both
Ciscos it would be great.
Thanks in advance.
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