topic Re: How to add a route in Operating System - HP-UX

How to add a route

Geyson — Tue, 04 May 2010 17:53:56 GMT

Hi all,

I need to add a route to my servers (HP-UX 11.23) in windows is like this.

route add -p 192.168.100.0 mask 255.255.255.0 192.168.6.12 metric 1

but in HP-UX i dont know how to do it.

Can anybody help me?

Re: How to add a route

R.O. — Tue, 04 May 2010 18:04:17 GMT

Hi,

route [-f] [-n] add [net | host] destination gateway [count]

In your example:

route add net 192.168.100.0 255.255.255.0 192.168.6.12 1

Also, you have to add it to file "/etc/rc.config.d/netconf" to not lose it after a reboot

Regards,

Re: How to add a route

Matti_Kurkela — Tue, 04 May 2010 19:28:28 GMT

There is one HP-UX oddity you should know: the "count" value (known as "metric" in windows) is not actually optional in HP-UX if the route includes a gateway (like yours does).

If count is not specified, HP-UX "route" command will assume it is 0, which makes no sense with gateway routes. As a result, trying to manipulate a gateway route without specifying the count will always fail with a cryptic-looking error message.

The "route" commands of most other OSs have a logic like "if the route entry contains a gateway and count is not specified, assume count=1; else assume count=0."

This little omission has caused much confusion to new HP-UX sysadmins.

MK

Re: How to add a route

Geyson — Tue, 04 May 2010 19:51:19 GMT

Hi i added the route, but when i added it show me the following

--> route add net 192.168.100.0 255.255.255.0 192.168.6.12 1

add net 192.168.100.0: gateway 255.255.255.0: Network is unreachable

Re: How to add a route

Suraj K Sankari — Wed, 05 May 2010 02:41:08 GMT

Hi,

Can you post this output
netstat -in
netstat -nr

Suraj

Re: How to add a route

Geyson — Wed, 05 May 2010 12:29:07 GMT

Hi here are the result of -in and -nr attached

Re: How to add a route

R.O. — Wed, 05 May 2010 12:55:19 GMT

You have a single lan (lan1) and all the packets will go through it and the default gateway (192.168.6.1).

Regards,

Re: How to add a route

Geyson — Wed, 05 May 2010 13:24:50 GMT

Hi R.O.,

The thing is that i need to add the another route,
route add -p 192.168.100.0 mask 255.255.255.0 192.168.6.12 metric 1

net 192.168.100.0
mask 255.255.255.0
gateway 192.168.6.12

with the first command that you gave me, is showing me that the network is unrecheable.

Re: How to add a route

Steven Schweda — Wed, 05 May 2010 13:25:19 GMT

> Can anybody help me?

It's hard to say. Define "help".

> route [-f] [-n] add [net | host] destination gateway [count]

I don't see a netmask in there.

> route add net 192.168.100.0 255.255.255.0 192.168.6.12 1

I see a netmask (value) in there.

For an accurate synopsis of the "route"
command, I'd try:

man route

I don't have 11.23, but on my 11.11 and 11.31
systems, that says:

/usr/sbin/route [-f] [-n] [-p pmtu] add [net|host] destination
[netmask mask] gateway [count] [source src]

which suggests that the command might need to
look more like this:

route add net 192.168.100.0 netmask 255.255.255.0 192.168.6.12 1

> add net 192.168.100.0: gateway 255.255.255.0: Network is unreachable

"gateway 255.255.255.0" should be a clue.
Apparently, that "netmask" keyword is
important when specifying a netmask.

Re: How to add a route

Geyson — Wed, 05 May 2010 14:17:32 GMT

Hi Steven Schweda,

It work perfectly, yes this keyword is important.

Now i have 2 question, first how can i add this thing in netconf file?.

Second in a server with cluster can i add by the same way?.

Re: How to add a route

Steven Schweda — Wed, 05 May 2010 15:43:18 GMT

> It work perfectly [...]

Reading the "man" pages can be helpful.

> [...] how can i add this thing in netconf
> file?.

Have you looked at the comments in that file?
I thought that SAM (or what's left of it)
could manage that file.

On my 11.31 system, SMH (Tools -> Network
Services Configuration -> Route) seems to do
this:

/usr/sam/lbin/samx -C -s route /usr/sam/lib/C/route.ui

whose help seems to say that it does the job.

> [...] cluster [...]

I know almost nothing about HP-UX clusters,
and I know exactly nothing about yours.