erlang shell can't ping pong in same pc

Question

when I use erl open multi nodes, and then I start erl like this:

erl -sname test1
erl -sname test2

And then, I logon the two shells and test ping each other, but can't ping pong.

net_adm:ping(test2).

Anywhere wrong? Does somebody know? The detail message info is: enter image description here

Answer 1

Once you issued erl -sname [some_name] check inside your shell what the name of the node is , using the method node/0:

erl --sname test1
>>node()

In case you do have another name try with net_adm:ping('test1@[full_name]').