feigin@inf.ethz.ch (Adam Feigin) (03/06/91)
This is how to install Ultrix (V4.1) from a RIS server
that is NOT on the same subnet as the system to be installed.
Our site has a fairly large class B network where the more important
subnets are connected by multi-protocol routers (well ok, it only
works if you have routers that are able to bridge the MOP
protocol between the RIS server and the client).
On the client's subnet, you need some unix host as an intermediary
for two files.
- make ciscos bridge mop packets from client to server.
- on server, modify /usr/etc/getnetif to:
#!/bin/sh
echo 'RIShost netmask broadcast'
where "broadcast" is the broadcast address used on the CLIENT's net.
- Setup the ris stuff on the server.
- on client, boot from network and let fail. It fails because after
the MOP download, it has no default router to talk to.
- add intermediary host to clients' /etc/hosts using ed.
- Get a DEC [RISC|VAX]/usr/etc/route from somewhere (possibly from the RIS
server area) and copy it to the intermediary:/tmp/route
- copy client's /etc/restore to intermediary:
dd if=/etc/restore | rsh intermediary cat > /tmp/restore
- get intermediary's copy of DEC [RISC|VAX] route to client's mini-unix:
rsh intermediary dd if=/tmp/route > /etc/route
chmod 755 route
- on client, add default route, remove /etc/route, get "restore" back:
/etc/route add default <dflt> 1
rm /etc/route
rsh intermediary dd if=/tmp/restore /etc/restore
chmod 755 /etc/restore
- hit ^d to continue with installation. This will make and fill
the root filesystem but will fail again after the reboot because
the default route is forgotten.
- mkdir /zzz
rcp intermediary:/etc/route /zzz/route
/zzz/route add default <dflt> 1
- hit ^d to continue with installation.
Good luck, and may the force be with you!
BTW, THIS IS NOT SUPPORTED! :-}
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Adam W. Feigin Andreas Karrer
Manager, Computing Facilities Network Manager
Department of Computer Science Communication Systems
Swiss Federal Institute of Technology
Zurich, Switzerland