ifconfig hangs

[Jitendra_1]

Hi all,

I have a A500 server with HP-UX 11.00 ( June 2001 patch bundle applied).
There are two lan cards. lan0 is the primary . the other lan card has 4 ports and I am using lan1 will be used for the other network. I tried configuring the lan1 card today . I tried both SAM and ifconfig command . But in both cases the server just hangs immediately and then even the lan0 network becomes unreachable. Any ideas ?

thanks

[Christopher McCray_1 · Accepted solution]

I just had the same problem with my N-class servers. The apparent problem was with the subnet mask being the same, in our case. I got with our network engineer and he had to specify a special subnet mask and the server didn't hang after configuring our other cards. In the mean time, until your problem is permanently fixed, you should be able to do a set_parms addl_netwrk and hit return to select the defined values for your default gateway and subnet for lan0 and you will be back up.

[rick jones]

were you trying to configure the second NIC in the same IP subnet? were the two NICs connected to the same switch?

if you tried to configure both NICs into the same subnet, perhaps traffic started going-out a different path and it led to an apparant hang of the session.

in general, it is not a good idea to configure multiple NICs into the same IP subnet. you can, but it takes some work - ndd to set ip_strong_es_model for one on 11.

[Jitendra_1]

Thanks Christopher and Rick,

You were right. I was using the same netmask putting the second lan card into the same network. I used different netmask and it worked ! Thanks Rick for the tip on using ndd.