Wrong LAN interface used after upgrade

[Aravind_3]

During the an application and OS upgrade on a D-class the server was not reachable via LAN after the first reboot.

We found out that after the reboot the interface numbers from LANports on the additional LAN card have changed from
4 and 3 to 2 and 1 .
Output from lanscan before the upgrade (HPUX-10.20):

Hardware Station Crd Hardware Net-Interface NM MAC HP DLPI Mjr
Path Address In# State NameUnit State ID Type Support Num
8/16/6 0x080009AE18BC 0 UP lan0 DOWN 4 ETHER Yes 52
8/8/2/0 0x00108304B6E2 4 UP lan4 DOWN 5 ETHER Yes 119
8/8/1/0 0x00108304B6E1 3 UP lan3 UP 6 ETHER Yes 119

Output from lanscan after the upgrade (HPUX-11.00):
Hardware Station Crd Hardware Net-Interface NM MAC HP DLPI Mjr
Path Address In# State NameUnit State ID Type Support Num
8/16/6 0x080009AE18BC 0 UP lan0 DOWN 4 ETHER Yes 52
8/8/2/0 0x00108304B6E2 2 UP lan2 DOWN 5 ETHER Yes 119
8/8/1/0 0x00108304B6E1 1 UP lan1 UP 6 ETHER Yes 119


After we adjusted the parameter INTERFACE_NAME[0] from lan3 to lan1 in the /etc/rc.config.d/netconf file the application was reachable again.


what must have happened meanwhile ?
Thanks
Aravind

[Joaquin Gil de Vergara]

perhaps you replace a network card (or change it of slot) when you have installed 10.20 and then instance numbers changed.

Now, when you upgrade instance numbers are like network card be installed by first time

regards

[Aravind_3]

Joaquin,Thanks.
But can you please elaborate more.

I am finding it bit difficult to make out what you have recommended.

Thank you so much,
Aravind

[Ron Kinner]

I saw the same numbering change on our upgrade. Don't think you did anything wrong other than trying to upgrade rather than cold install.

Ron

[Scott Van Kalken]

instance numbers change after the upgrade.

I've never figured out why, but I tend to do cold installs.