Reliable PPP

Dear all,
I need your suggestion.

I need to connect an IP host with a proper static IP address to an IP
network through a TDM network.
Moreover I need a reliable IP connection between this IP host and the IP
network.

So, I thought to set up two different PPP session (this would guarantee
physical reliability), over different TDM links, toward the IP network and
to manage these PPP links with an adaptation function in my IP host (in
order to not duplicate IP traffic on IP network). This function will use,
in Tx toward the IP network, the PPP session from which, in Rx, it has
receive PPP traffic. When a fail occurs, the adaptation function switch on
the other PPP session.

Two PPP sessions are monitored by Echo Request/Reply message.

The IP network will see my IP host's IP address on two different PPP link
and it will be a task of IP network routing protocol to identify the proper
route toward my IP host.
In case one PPP link fails, my IP host has always an available link toward
the IP network and the IP network routing protocol will reconverge in order
to find out another proper route toward my IP host.

Do you think this sounds good ?


I don't know if there some IETF work on this problem. If it exists, someone
can provide me ?


Thank in advance.
Fabio