On Fri, Oct 04, 2002 at 07:40:37PM -0700, Alvin Oga wrote:
> 
> hiya dave
> 
> quick glance... and some guesswork
> 
> - a machine should always be able to ping itself 
>       ( 10.32.32.x or 10.42.43.x 
>       ( evben with the nic cable disconnected )
>
> - c0n1 does not have a 10.42.42.0 routes
>   and it has 10.42.43.* gateway ( wrong ?? )

The cluster cimputers don't necessaruly need to know any other
routes.  That's the function of the default route.

> - i think either eth1(43.*) or eth0(42.*) must go to the outside world
>       lets say *.42.8 is internal

Doesn't necessarily have to.  The cluster computer uses buster as
it's gateway and that's all it needs to know.  Buster sends any packets
to nets it doesn't know about to _it's_ default gateway, i.e. the 
firewall.

> - if c0n1 and c0n3 has only one nic.. you have extra routes
>   listed
>       - i say change all of the cluster to be 10.42.42.*

Having the cluster be on it's own network with access only through
the gateway computer had benefits.  The cluster is more secure and
they don't have to waste any processor time ignoring packets that
aren't relevent to them.  Also, if you make any changes to your
own network, you don't need to reconfigure the cluster.  Again,
this isn't much of an issue until the cluster starts to get bigger.

> - buster, if its the one to go tothe outside world needs
>   to have one wire to the outside world
>       gateway is the ip# of your router or isp
>       10.42.43.1  lets say

Buster is a private network and it's gateway is the firewall.

> and you should be all set
> c ya
> alvin

Regards.

Kourosh


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