topic Re: Ifconfig error !! in Operating System - HP-UX

Ifconfig error !!

chae, jeong-seong — Thu, 28 Mar 2002 07:55:12 GMT

Hi!!

After I change the IP address of /etc/rc.config.d/netconf file,
I do stop and start the "net daemon".
But That show the message.
ERROR: lan0 interface: ifconfig : ioctl
(SIOCSIFNETMSK) : vad value

lanscan and linkloop command OK!
I do "ifconfig lan0" command,
the result is " no such interface".

thanks!!

Re: Ifconfig error !!

Ravi_8 — Thu, 28 Mar 2002 08:04:26 GMT

Hi,

just do
#ifconfig lan0 down
#ifconfig lan0 up

or else reboot the machine

Re: Ifconfig error !!

Michael Tully — Thu, 28 Mar 2002 08:07:39 GMT

Depending on the model of your system, your OS patch level you could have hung that actual LAN card.

You could try to run the 'lanadmin' command and
reset your card.

Re: Ifconfig error !!

Michael Tully — Thu, 28 Mar 2002 08:12:19 GMT

Rebooting your system should be the very last resort. You should be able to use th ifconfig command or, using lanadmin, as suggested.

Re: Ifconfig error !!

chae, jeong-seong — Thu, 28 Mar 2002 08:41:01 GMT

HI!!

I do ifconfig lan0 down and ifconfig lan0 up.
And rebooting the system.
But The result same.

My system is the name of E45 and O/S is 11.0.
As my company was changed IP address, I work
that IP change.
After I change IP address, I do "ifconfig lan0"
the result is "no Such interface".

the sloution?

Re: Ifconfig error !!

Clemens van Everdingen — Thu, 28 Mar 2002 08:42:09 GMT

Hi,

could there be something with the netmask in your netconf file.
It looks like he is complaining about a bad value !

C.

Re: Ifconfig error !!

Printaporn_1 — Thu, 28 Mar 2002 10:35:13 GMT

Hi,

do you use sam to change IP adress ?
if not , try use sam , if may show you the error massage , some subnetmask is not valid in HP-UX because of some RFC ... I cannot rember it number.

Re: Ifconfig error !!

Domenico_5 — Thu, 28 Mar 2002 10:39:35 GMT

hi jschae

send your netcof so we can help if there is an error

Re: Ifconfig error !!

Steven Gillard_2 — Thu, 28 Mar 2002 11:00:10 GMT

Is it possible that you're using an 'all zeroes' or 'all ones' subnet address? By default HPUX will not allow you to configure such an address (eg 10.0.0.1 with mask 255.255.255.0 is not allowed). This check can be disabled by setting the ndd tunable ip_check_subnet_addr to 0. Try this before running the net start script:

# ndd -set /dev/ip ip_check_subnet_addr 0

To make this change permanent you can edit /etc/rc.config.d/nddconf.

Regards,
Steve

Re: Ifconfig error !!

Ron Kinner — Thu, 28 Mar 2002 21:07:21 GMT

If you are using a subnet of a major Class A , B or C network be aware that you can not use the first or the last subnet unless you go into ndd and make a change (11.0 +). The RFC recommends against them because they can be confused with the major Class network and broadcast addresses respectively. For example: if using a 10 net with a 255.255.255.0 mask you should avoid using the 10.0.0.0 - 10.0.0.255 subnet and the 10.255.255.0 -10.255.255.255 subnet.

Ron

Re: Ifconfig error !!

Sandip Ghosh — Thu, 28 Mar 2002 21:14:24 GMT

To eliminate all these errors either run it from SAM or
#set_parms ip_address

Sandip

Re: Ifconfig error !!

K.Vijayaragavan. — Fri, 29 Mar 2002 13:43:27 GMT

Hi,

Does the command "ioscan -C lan" shows the network card you have.

Are you in runlevel 3 or not "
who -r" .

-Vijay

Re: Ifconfig error !!

rick jones — Fri, 29 Mar 2002 18:33:32 GMT

the stuff about all zeros or ones is probalby the thing. by default HP-UX < 11i interprets ip addresses and subnetmasks according to much older RFC's. setting ip_check_subnet_addr to 0 will get them interpreted according to newer RFC's.

11i defaults to ip_check_subnet_addr = 0 so no more need to tweak things with ndd.

Re: Ifconfig error !!

chae, jeong-seong — Mon, 01 Apr 2002 01:41:57 GMT

Thank you!!

I thank you for reply.
My system seems to problem the net mask.
I have done everything.
Eventually, I succeed that ndd command use.
"ndd -set /dev/ip ip_check_subnet_addr 0"
Referencely, my company IP address is 211.241.160.0 and subnet mask is 255.255.255.224

thank you.