arp command

[deepu]

Trying to change host's ARP table to add a mapping from the IP address I want to assign to the print server's Ethernet address. I am using arp command:
arp -s 80.0.0.235 0:40:05:4a:81:a7
but error is there :
SIOCSARP: Invalid argument
How to overcome this error?

[twang]

Try applying the latest arp patch
http://www2.itrc.hp.com/service/patch/patchDetail.do?patchid=PHNE_21184&context=hpux:800:11:00

[deepu]

Hi,
I have downloaded the patch and installed it and also rebooted the server.
But still the same error is coming.
SIOCSARP:Invalid argument.

[Zeev Schultz]

1)Does it happen for any arp entry you add? (Try to add another one)
2)Is "80.0.0.235" shown when "arp -a" run?With or without MAC address?

[Patrick Wallek]

Part of your problem may be that you are using a '0' subnet. By default HP-UX does not allow you to use 80.0.0. There is an NDD setting that you need to change to allow that.

This may not be your problem, but it is possible.

[Zeev Schultz]

Hm,that address 80.0.0.235 is not accessible via current routing table I guess (netstat -rn)?

Then add a host route :
route add host 80.0.0.235 .Then add
entry to arp cache.

Zeev

P.S no ndd parameter on the 0.0 issue that I saw :)

[deepu]

Hi Zeev,
Not able to add in route table.
#route add host 80.0.0.235 70.0.0.106
add host 80.0.0.235: gateway 70.0.0.106: Network is unreachable

[Zeev Schultz]

And I assume that 80.0.0.235 is somewhere not in your LAN (ie behind a firewall) so no routing is to there?

By the way,can you see the entry with arp -a
or "ndd -get /dev/arp arp_cache_report | grep 235"?

[deepu]

Thanks Zeev, problem resolved..

--Deepu