Multiple IP address under HP-UX

[sardin]

Hello,
I need to add a new IP address on my workstation ...
Another point is that I am running HP-UX 10

I hope that someone can give me a solution !

Thanks

[Torsten.]

HP-UX 10.20?

I'm not sure if this is working with this OS (maybe another command, but I don't remember), but you can use lan0:0 (this is lan0) and in addition lan0:1, lan0:2 and so on with ifconfig command or even in the netconf file.

"man ifconfig" may give you more information.

It works for sure with 11.00 and newer.

[Zinky]

not sure either if this is supported on 10.x but what you need is Viurtual IP (VIP):

Noe that it needs to have same network address.

i.e.

For example:

Say you want your server saturn (saturn.xyz.com) to have another ip address/DNS and known as venus.xyz.com as a VIP.

And say the IP addresses are, and saturn's IP address is bound/plumbed on lan2:

saturn: 150.234.98.5
venus: 150.234.98.20


saturn# ipconfig lan2:1 150.234.98.20
netmask 255.255.255.1 up

Your saturn server will now also have a VIP address of venus...

[Jeff_Traigle]

There was a patch for 10.20 that included the ifalias command to do this.

[melvyn burnard · Accepted solution]

On HP-UX 10.20 there was no built in ability to add IP addresses to an existing network.
You need to add a patch to allow this, and the command it adds is called ifalias
Check for PHNE_12492, and remember this on 10/20 only, and this OS version is no longer supported

[Torsten.]

the man pages says it is working with ifconfig even in 10.20:

http://docs.hp.com/en/B2355-90129/ifconfig.1M.html

Important: use different subnets!

[Michael Steele_2]

I've also got 'ifalias' / 10.20 and 'ifconfig' / 11.00.

Presuming lan1 is already assigned an ip.

netstat -in -I lan0
ifalias lan0 add 192.168.0.3

ifconfig lan0:1 inet 192.168.0.2
ifconfig lan0:2 inet 192.168.0.3

To verify:
# netstat -in -I lan1

If you typo:
# ifalias lan1 del 192.168.0.2

[melvyn burnard]

ifconfig will not allow you to add IP address onto an exisitng configured network on HP-UX 10.20, this was only available as of H-UX 11.00, you need the ifalias patch for 10.20

[sardin]

Thanks to all for 'ifalias'.

I think that it will do.
I hope that I will get it right on subnet definition.

The 2 addresses are not in the same segment !

I am surprised not to have a specific mask with each address (for what understand of Supernet matter in man pages)

If one of you can make it clear for me , I will appreciate.

[Gilles Allard]

Sardin
Do not fear about address masks and subnetting. Since 1999, I'm running 15 class C segments on a single lan card and they all have a /24 mask.
I'm using ifalias on HPUX10.20. According to my notes, PHNE-17097 provided ifalias.

[sardin]

I am going to use ifalias (as soon as I find some time ....)

Thanks for help

;o)