SUMMARY: adding a statis route (point to point)

From: Rich Glazier <RichGlazier_at_netscape.net>
Date: Thu, 02 Oct 2003 14:55:27 -0400

Thanks to
Charlie Ballowe
Mandell Degerness
Martin Burton

Since the second NIC was assigned a totally different IP and subnet then the other card (our primary network), I didn’t need to do anything with the routes. Everything destined for that network (which is just the other machine), went through that card.


Responses below:

---
You shouldn't need to *add* a route, as one should already be there from the
interface configuration.
You'll find an entry like:
172.12.0.0    255.255.255.0   1   ee1
Which will direct all traffic destined for a 172.12.0.x host to the
appropriate interface.
HTH.
Regards,
Martin Burton
---
You can, but you should not have to.  As soon as you up the interface with
the netmask of 255.255.255.0, everything in that subnet should automagically
route through that interface.  You should be able to see this with the
results of the command "netstat -rn".
Regards,
Mandell Degerness
---
I believe it should just be "route add -host 172.12.0.2 -dev ee1", but 
i don't believe that should be necessary. However, if you want traffic
destined for 10.1.0.2 to go through 172.12.0.2 (assuming they're the 2 
interfaces on the same box) then you would need something like:
route add -host 10.1.0.2 172.12.0.2 -dev ee1
that should solve your problems.
-Charlie
RichGlazier_at_netscape.net (Rich Glazier) wrote:
>I have 2 DS20s each with a single NIC set up on the primary network. it is a 10.1 netowrk with a 255.255.0.0 netmask.
>
>i have added a second NIC (ee1) in each machine.  they are to talk to eachother only through these interfaces.  i have assigned an IP and netmask to those cards that is totally different than our primary network.  it is a 172.12 address with a 255.255.255.0 (class c) subnet.
>
>gated and routed are not running on either machine.
>
>question:  how can i ensure that one node's traffic destined for the other node goes via the second nic?  can i do a route add or add an entry in the routes file and restart networking?
>
>example:  Host As second NIC  is 172.12.0.1
>          Host Bs second NIC  is 172.12.0.2
>
>          I want everythng on Host A destined to 172.12.0.2, to go through host As second NIC (172.12.0.1).  can i "route add -host 172.12.0.2 172.12.0.1 -dev ee1", even though 172.12.0.1 isn't a gateway, but the end of the line?
>
>TIA
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Received on Thu Oct 02 2003 - 18:56:40 NZST