Thanks all who replied with ideas, suggestions and thoughts:
Viktor Holmberg [Viktor.Holmberg_at_uk.abnamro.com]
Sakellaris Alexander [asakelaris_at_cosmote.gr]
Michael James Bradford [mjbr_at_tdk.dk]
John Speno [speno_at_isc.upenn.edu]
Leonard, Roger [rleonard_at_cvty.com]
Tom Webster [webster_at_ssdpdc.lgb.cal.boeing.com]
Paul Chapman [pchapman_at_davidjones.com.au]
The solution was fairly simple; I added the following to /etc/routes:
On systemA:
-host systemB 10.40.10.1
and on systemB:
-host systemA 10.40.10.2
This seemed to have the effect of screwing the routing table. I dropped
these static routes and the problem was fixed.
Once the interface gets added, the route is added to that network - my
extra routes seemed to confuse things (I know there is a better answer - I
just need to think about it a bit more).
Some people asked why I had chosen those specific IP addresses - my IP
allocation people wanted me to use that particular sibnet which was
unassigned
in our corporate LAN - hence the class C subnet mask as well.
My original post:
Hi All,
I just want to have something confirmed and make sure I'm not forgetting
something:
I have two systems, A and B. Each is connected to the LAN, but I also want
to run a
private LAN between the two systems to pump high volumes of data without
affecting
public LAN performance. I'm running Digital Unix 4.0D on one and Digital
Unix 3.2G on
the other. Both have the latest patch kits for each release installed.
The way I am doing this is I have purchased two DE-500-AA 10/100 cards and I
have
a cross-over cable made of UTP. Distance between machines is 20 meters.
Both cards have been set on the console to 100 MB ful duplex, viz:
>>> set ewd0_mode FastFD
Both cards are configured in the kernel with options:
On systemA:
IFCONFIG_3="10.40.10.1 netmask 255.255.255.0 speed 200"
and on systemB:
IFCONFIG_3="10.40.10.2 netmask 255.255.255.0 speed 200"
the speed 200 is to support FastFD as per the ifconfig man page.
I have added entries in the /etc/hosts files for both systems:
systemA 10.40.10.1
systemB 10.40.20.2
and in the /etc/routes files on both systems, I have added:
On systemA:
-host systemB 10.40.10.1
and on systemB:
-host systemA 10.40.10.2
Currently I can't ping across the interfaces, and I've checked the cards
separately.
I'm in the process of replacing the UTP (runs under a lot of floor tiles -
not trivial to
just change) - but I wanted to check: is what I have done correct? Have I
left
anything out?
Any help or even an "it looks OK to me" is appreciated.
thanks,
gunther
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Received on Fri Apr 09 1999 - 06:41:08 NZST