topic Re: Forwarding IP packets in Operating System - HP-UX

Forwarding IP packets

Paul Clayton — Thu, 25 Jul 2002 08:18:56 GMT

How does one configure HPUX 11.00 to forward IP packets between interface cards.

Re: Forwarding IP packets

Tim D Fulford — Thu, 25 Jul 2002 08:31:42 GMT

to see waht it is:
ndd -get /dev/tcp ip_forwarding

to set it
ndd -set /dev/tcp ip_forwarding 1

o - No forwarding
1 - Forwarding
2 - forwarding if multiple interfaces

I'd set to 1

Tim

Re: Forwarding IP packets

Paul Clayton — Thu, 25 Jul 2002 08:43:32 GMT

Brilliant!! That is the one command I did not try.

thanx

Re: Forwarding IP packets

T G Manikandan — Thu, 25 Jul 2002 08:53:09 GMT

To list current settings
# ndd -get /dev/ip ip_forwarding

To set to new value
# ndd -set /dev/ip ip_forwarding 0

The changes will be lost after a reboot .Make entries in /etc/rc.config.d/nddconf file.
TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_forwarding
NDD_VALUE[0]=0

ndd -c will apply changes.

Thanks

Re: Forwarding IP packets

rick jones — Fri, 26 Jul 2002 17:15:47 GMT

unless someone has explicitly disabled it, since you said "interface cards" it implies you already have multiple interfaces, and HP-UX will by default forward packets.

there is a bit more to it of course - you have to have systems on either side of the HP-UX box configured to use the HP-UX box as a router.