Disabling routing on a RP5470 HPUX 11.0

[Clutier_1]

Hi,

I've got 2 servers RP5470 connected on a lan (via a network card lan1)(IP 100.83..., mask 255.255.254.0).

I need to connect them to each other with a cross cable, using another physical network interface (lan4).

I plan to use IP adress like 192.168.0.1 and 192.168.0.2 for this new link (mask 255.255.255.0).

How can I be sure that my servers will not route packets from the 100.83 network to (or from) the 192.168 ?

Thanks for your help.

[RAC_1]

Add specific route to specific destination.
On 192.168.0.2
route add host 192.168.0.1 192.168.0.2 0
On 192.168.0.1
route add host 192.168.0.2 192.168.0.1 0

This should do it. Also, you can use ipfilter product to do some NAT/forwarding. This is a free product.

[Devender Khatana]

Hi,

Also remove the default route which is allready set to existing IP.

Add another default route along with the new IP.

HTH,
Devender

[Hemmetter · Accepted solution]

Hi Clutier

check your ip_forwarding ndd(1m) with

# ndd /dev/ip ip_forwarding
0

Should be zero.

rgds
HGH

[Steve Lewis]

If you still need the default route for other purposes, then it is just a matter of assigning new hosts file entries for the 192.168.0.N lan cards and using these new hosts entries in your software, NOT the old hostnames which would resolve to the wrong IP address and hence out of the wrong lan interface. The default route generally appears last in netstat -r so it will route out of the 192.168.0 card given a hostname resolution to a 192.168.0 address.

You can prove it is going out the right interface card by sending a file and checking netstat -i before and after.

[Victor Fridyev]

Hi,
It seems to me, you have to do nothing for this purpose. If your default router belongs to 10.83.whatever.subnet , all packets, which are not targeted to 192.168.0.0, will be routed by your default router.
Don't worry, be happy 8)))

HTH

[Clutier_1]

Thanks to everybody.

I've just disabled ip_forwarding with ndd command.

It seems to work fine.

Regards.