[mod.computers.vax] PSI nodes

JMS@ARIZMIS.BITNET (Joel Headroom) (09/19/86)

>Suppose you have a VAX cluster and VAX PSI implemented as
>multihost and PSI ACCESS on the other nodes.
>
>1) How can you access a specific node from a public node?
>Do you specify the DTE address of one node, and SET HOST to another?
>or.. Can you use the userdata field somehow??

You can use userdata, or virtually anything else, but I recommend
using subaddress.  For example, our DTE number is 3132123456.
To get to node 14 in the network, specify a subaddress of 14.  This
makes things easier.  For each node in the DECnet we're connected
to PSI/PSI Access knows about the DECnet node number as a subaddress.

The proper command here is
NCP> set module x25-server dest vax14 node vax14 object 36 -
        priority 128 subaddress 14

NOTE especially the priority setting (MUST BE GREATER THAN FF,
the X25-server going to X29 on the local node!).

>2) $ SET HOST/X29 DTE-address
>accesses one node.. but can you specify a specific node??
>ie. the converse of 1).
>
>something like
>  $ SET HOST/X29 20012345::SAM
>where SAM is the node

I'm not sure what you're getting at here.  Clearly if they're all
in the same network, the appropriate command is $ SET HOST, not
$ SET HOST/X29.  Are you thinking of outgoing connects from PSI Access
hosts through the PSI host into the X.25 network?

For the PSI Access hosts, the X25-ACCESS module knows the remote
networks, and the node they're connected to.  You can use the
network%dte-address in your $ SET HOST/X29 to get out into the
X.25 network.  Is that what you're looking for?

jms

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| Joel M Snyder                 |             BITNET: jms@arizmis.BITNET
| Univ of Arizona Dep't of MIS  |           ArizoNET: MRSVAX::JMS
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