ARPA/9000 networking disaster?

[Gordon Brown_4]

Hi All,

I wonder if anyone could help me with a message which I saw on a console recently. The message was as follows:

ARPA/9000 networking disaster
subsys: NS_LS_PROBE loc:01001
arp ether address is broadcast for IP address 0

My guess is that there was some sort of network glitch? Has anyone seen this message before and should I be concerned by it? The message has since stopped (it occured sveral times within the space of a minute or so).
The HP server is a D370 running 10.20. No errors were reported in any of the log files.

All help greatly appreciated, if any more info is required please let me know!

Cheers,
Gordon

[Telia BackOffice · Accepted solution]

Problem Description

I'm receiving the network error message:

Arpa/9000 networking Disaster subsystem ns_ls_probe
loc:01001...network ns_ls_probe disaster PID [ics]...
arp: ether address is broadcast for IP Address 0!

How do I prevent this from appearing?

Configuration Info

Operating System - HP-UX
Version - 10.20
Hardware System - HP 9000
Series - K400

Solution

In order to prevent this message from printing on the console,
edit /etc/rc.config.d/nettl:

1. Uncomment the following line:

# NETTL_CONSOLE=0 # No console logging desired.

2. Change NETTL_CONSOLE=1 to 0

The message you see indicates that there is a device out on the
network sending ARP requests where the source ethernet address
is a broadcast address (ff-ff-ff-ff-ff-ff) when it should have been
an individual station address. The message gives the IP address of
the device that sent the message, but unfortunately, this IP address
is 0.

Given that the IP is 0 with a source address that is a broadcast
address, it is going to be very difficult to find which device is
doing it. You may have to look at the network and guess which is
the most likely devices and concentrate on them. Look at devices using
DHCP, BOOTP, or other devices unlikely to have an IP address when they
start up.


BR
Jannik

[Pete Randall]

Gordon,

I suspect you're exactly right with the network glitch theory. I've seen similar messages many times when we've lost connection to the network.

Pete

[Gordon Brown_4]

Hi Guys,

Thanks very much for your replies. If this is just a glitch I think I'll keep the message printing to the console so that I'm aware of it happening.

Thanks again for the explanations.

Kindest regards,
Gordon