That is the problem I am having now. I am not able to
do a rsh from one machine located in one network to
anoher machine located in another network. However, I
can do rsh to whatever machine in both networks from
the machine which is working as gateway.
And I am the only network engineer who can solve it.
A lot of thanks for your answer.
--- "Brian W. Barrett" <brbarret_at_[hidden]>
escribió: > This is correct, but I wanted to clarify a
couple of
> things. LAM/MPI
> requires full connectivity between all nodes in the
> LAM runtime
> environment. That means that the N1, N2, and N3 in
> your example can only
> communicate with each other if the two gateways in
> the middle are
> configured to allow communication between networks.
> So, in addition to N1
> being able to talk to N2, N1 must be able to
> communicate directly with N3.
>
> There are a number of ways of setting this up, but
> that is probably beyond
> the scope of this mailing list. You would probably
> be better off finding
> a network engineer at your location.
>
> If you have some type of firewalling between the
> networks, you are also
> probably in trouble. It is not enought to be able
> to rsh/ssh between
> nodes. The network also has to be configured to
> allow communication
> between arbitrary high-numbered TCP and UDP ports.
>
> Hope this helps some,
>
> Brian
>
>
> On Wed, 18 Sep 2002, Roberto Pasianot wrote:
>
> >
> > Hi Ivan,
> >
> > I can't see any reason why you woldn't be able
> jump over as many
> > gateways as you want.
> > If you can "rsh" between machines then you can
> boot lam and that's it.
> > Of course, you need to have the routing tables
> properly set up, but this
> > is not lam responsibility.
> >
> > Cheers,
> >
> > Roberto
> >
> > On Wed, 18 Sep 2002, [iso-8859-1] Iván Tejera
> Santana wrote:
> >
> > > Hi everybody,
> > > It´s the first time I am sending a mail here.My
> > > question is the following:
> > >
> > >
> Network1---gateway---Network2---gatewaty---Network3
> > >
> > > Can I boot lam-mpi using the configuration
> showed??
> > >
> > > I have got the system works with this
> configuration:
> > >
> > > Network1---gateway---Network2
> > >
> > > The main node of the Lam-mpi system is located
> just
> > > where the gateway is.
> > >
> > > Obviosly, I have complete connectivity in that
> > > configuration, but what happens if I want to
> introduce
> > > a new network like in the figure:
> > >
> > > N1---gateway----N2---gateway----N3
> > > ---main node--
> > >
> > > it doesn´t work because there is not total
> > > connectivity between main node where I boot
> lamboot
> > > and nodes from network N3, in spite of I can do
> ping
> > > between all of them.
> > >
> > > I am studying telecommunications at Las Palmas
> > > University, and it is very important for me to
> know if
> > > it is possible or no??
> > >
> > > It is very urgent because I must to deliver my
> proyect
> > > and I can not do it while don´t resolve this
> problem.
> > >
> > > Thanks forward
> > >
> > >
>
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> > > _______________________________________________
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> > >
> >
> > _______________________________________________
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> >
>
> --
> Brian Barrett
> LAM/MPI developer and all around nice guy
> Have a LAM/MPI day: http://www.lam-mpi.org/
>
> _______________________________________________
> This list is archived at
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