On Sat, 1 Apr 2000 [EMAIL PROTECTED] wrote:
> one ethernet card has one ip the other has different. now my network iss
> able to ping, telnet & ftp to my local internet ip setup on the frist
> ethernet card.
>
> on the second ethernet card i have another ip configured but no one from my
> network is able to even ping the seconf ip. the error is Destination HOst
> not reachable.
>
> i have my route table perfect as it was earlier.
Short:
Your linux PC will have to have IP forwarding enabled, and in your client
PCs, you will have to set your linux PC as a gateway.
Long:
As you have different IP addresses, the two cards are on different logical
networks (even if they share the same cable). To connect two heterogenous
networks, you need a gateway (for homogenous networks, a router would do).
As both your networks are tcpip based and (I suppose) have the same
physical topology (bus, ring etc), your linux pc needs to act as an ip
forwarding router.
When a client pc tries to access a machine on a network not logically the
same as its own, it needs to go through a gateway that knows how to get
to the second network. Your linux PC knows how to do this, cause its
routing tables are set correctly. If it has IP forwarding, then it also
has the ability to pass packets from one network to the other. All that
remains is to tell your clients which machine they need to use as a
gateway.
Philip
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