Bjorn Gustavsson bjorn@REDACTED
Wed Jan 10 10:52:16 CET 2001

In general, we only guarantee that two consectuitive major versions can
talk to each other (i.e. R5 can talk to R6, R6 can talk to R7).

We don't change the distribution protocol unless we have good reason;
for instance the upcoming R8 *might* be able to talk R6 (so far we
haven't found any reason to change the distribution protocol in R8).

The original open-source version of Erlang (based on R4) could not
talk with the commercial version of Erlang.

All versions (commercial or open-source) of R6 and R7 can talk with
each other. The commercial version of R6 can also talk with R5.
(There was no open-source release of R5.)


"Vance Shipley" <vances@REDACTED> writes:

> Francesco Cesarini writes:
> > Nope.. Does not work, as there are also changes and improvements in the
> > Erlang distribution among releases, different versions of Erlang can not
> > talk to each other (Unless of course, the distribution went untouched..
> > Which is definitively not the case between R5 and R7).
> Well that statement is a bit strong isn't it?  I have connected my desktop
> environment to other backend nodes running different versions.  I would
> also point out that the release notes have many mentions of certain _issues_
> involving ditribution between versions.  I don't know about R5 <--> R7
> though.
> I was told at one point that my commercial versions wouldn't talk to the
> opensource versions.  Apparently this had to do with the security mechanisms
> used in the commercial systems not being released as opensource.
> 	-Vance

Björn Gustavsson            Ericsson Utvecklings AB
bjorn@REDACTED      ÄT2/UAB/F/P
			    BOX 1505
+46 8 727 56 87 	    125 25 Älvsjö

More information about the erlang-questions mailing list