Solaris 8/9 as default gateway

From: jo@neolabs.be
Date: Tue Dec 23 2003 - 07:31:30 EST


Hi,

I must configure a Solaris 8 box as the default gateway for our network,
which uses RIPv1. The Solaris box itself must forward all traffic it
receives to a Cisco device (this is our connection to the internet), but
this Cisco device does not talk RIPv1. Both Solaris box and the Cisco do
PNAT (don't ask - policy :-( ).

I do not seem to succeed in this easily. So far I have tries these things :

- using 'route add' is AFAIK not an option since things that you add to
the routing table behind routed's back are not propagated to other
routing daemons

- adding a passive route on the Solaris box to the cisco router using
/etc/gateways. This does not work since passive routes are not propagated
in the RIPv1 packets to the other machines in out network.

- adding the same but now _active_ route to the cisco router, again via
the /etc/gateways file. This does not work since the Cisco box does not
talk RIPv1, so after some minutes the route on the Solaris box to the
cisco box disappears from the Solaris box' routing table and consequently
from the routing tables everywhere in the LAN

- running in.routed with the -g option (Solaris 8) on the Soalaris box.
This way the Solaris box tells everyone (via RIPv1) that he is the
default route, but for some reason this route is propagated with metric
0, so the others don't add the route to there table (although they
receive the packet).

Using Rdisc/gated is not allowed, but moving to Solaris 9 is (I know
routed has been facelifted in Solaris 9)

Any suggestions are more than welcome ;-)

Many, many thanks

Jo

NEOlabs - http://www.neolabs.be - mailto:info@neolabs.be
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