TCP/IP Over SNA

[Guy Harris]

> TCP/IP and SNA are apples and oranges, with some exceptions.  The
> biggest exception arises from the fact that an SNA network can include
> a Token-Ring network.

Another exception might arise from some way of encapsulating IP
datagrams so as to send them over an SNA network, so that the SNA
network sort of "looks like" an Ethernet or (more likely) an X.25
network to IP.  Does anybody actually do so, i.e. send IP datagrams over
an SNA network?