Lost route

[Ron Irving]

When I performed a scheduled reboot earlier this week, I noticed during startup, that network services failed. The system referred me to the /etc/rc.log file. The first thing I noticed was:
Configure LAN interfaces
Output from "/sbin/rc2.d/S008net.sd start":
ERROR: usage: add destination [netmask mask] gateway [metric]
"/sbin/rc2.d/S008net.sd" FAILED

There was another section later in the file, referring to /sbin/rc2.d/S340net.

Both of these sections are exactly the same, as are the two files, S008net.sd and S340net.

Only /sbin/rc2.d/S340net has an assiciated 'K' script.

Upon reboot, we lost the default route, and had to enter it manually.

Any ideas?

Ron

[John Poff · Accepted solution]

Hello,

Check your /etc/rc.config.d/netconf file. That is where the routes are configured. Probably someone has tried to add/change a route by hand and gotten one of the parameters wrong.

JP

[Ron Irving]

The netconf file has the lines:

ROUTE_DESTINATION[0]=default
ROUTE_MASK[0]="255.255.0.0"
ROUTE_GATEWAY[0]="172.16.0.1"
ROUTE_COUNT[0]=1
ROUTE_ARGS[0]=""

Is there any problem with the sytax, or something? This is EXACTLY what's there.

ron

[MANOJ SRIVASTAVA]

Hi Ron

I am attaching a working netconf file . Please check it , it looks like the subnet mask is not correct , just a thought .


Manoj Srivastava

[MANOJ SRIVASTAVA]

Hi Ron

I am attaching a working netconf file . Please check it , it looks like the subnet mask is not correct , just a thought .


Manoj Srivastava

[John Poff]

Your netconf entries for the default route look ok to me. If your netconf file hasn't changed, the only other thing I can think of is that maybe the router you are using for your gateway was down or unavailable briefly when the box was booting. I've seen that happen before.

JP

[Ron Irving]

should the route mask be set to null? That seems a little strange to me. But, then again, I am strange...just a thought.

[John Poff]

Your mask will default to the longest subnet mask of the configured interfaces if you don't specify one. I don't set mine and it gets it right, but I guess there could be situations where you would need to set it.

You're strange? Me too! I think that's what attracts me to Unix. :)

JP

[Ron Irving]

Good point, John. We just did a complete zen thing with our network here. We went voice over ip for a new phone system, and the routers have all changed from HP stuff to the new Cisco call manager 7750. I shouldn't think they would go down, though...a:brand new.
b:that would affect adversly the phone system.

HOWEVER: All of these problems didn't start until we put the new equipment online.

Perplexing...

(A career as a circus clown might be adventageous)

[John Poff]

A circus clown? Hmm... I think the closest analogy to a Sys Admin is a weatherman. They both have to work with thousands of variables out of their control, and lots of people hate them when they get it wrong! :)

Of course, the hard problems are the fun ones!

JP

[rick jones]

i'm not sure i've ever seen a netmask on a default route

as for changing routers, i doubt this will change anything, but just to be complete, keep in mind that by defaultr, HP-UX 11 will periodically ping routers to check their health. if the routers do not respond, the routes through them are disabled. controlled through ip_ire_gw_probe

ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_ndd.txt