From: Stanislav Sinyagin (SSinyagin@xxxxxx)
Date: Mon Dec 20 1999 - 17:12:09 GMT-3
Hi all
Here's an untypical scenario I came across during my studies, in
someone's old papers. I implemented it in my test lab, and I think
that would be useful for you too. Who provides the best (the easiest,
the most reliable, the most concise...) solution ?
R4---------R3---------R2
E0 E0 S0 S0
DCE
The routers are connected in chain, the actual interface types ate
unneccessary. R2 and R2 run OSPF area 0. R3 acts as a NAT gateway. R4
is in inside NAT area, R2 is the outside network.
In inside NAT area, the hosts have the network 10.0.0.0/23.
They should be seen from the outside as 137.1.4.0/23.
Also R4's loopback, 10.0.4.4, should be seen as 137.2.4.4 in the
outside world.
The outside world should see in its OSPF the 137.1.4.0/23 and
137.2.4.4/32 routes, and no route from 10.0.0.0/8 should be seen in
the outside OSPF.
R4 should ping and telnet any router in the outside world.
There should be no statics on R4.
Between R4 and R2 loopbacks there should be an DLSW link. Also (I
didn't test it) I think there's no problem of installing a tunnel
between them.
Have fun,
Stan
-- Stanislav Sinyagin MTU-Inform, Moscow Tel. (+7) (095) 258 7878 Fax (+7) (095) 258 7870 E-mail: SSinyagin@mtu.ru http://www.mtu.ru
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