topic Re: Checking lanic status ! in Operating System - HP-UX

Checking lanic status !

Ivan Azuara — Fri, 17 May 2002 13:30:01 GMT

Hi !

In my last issue, I had the doubt,if the information with the landamin utility and networks commands show some hardware problem with the lan1.

# lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#

0/44.1 0x080009D01C06 1 UP lan1 snap1 2 ETHER Yes 119

For that i attach all the information about my lanics, for check the diference between the lanics.

Aclaration
----------
The lan0 is a lanic that i don't use for connection to my server. I only use the lan1 and lan2. The lan1 is 10 baset lanic and lan2 is a 10/100 baset lanic.

**Excract of my file /etc/rc.config.d/netconf

INTERFACE_NAME[1]=lan1
IP_ADDRESS[1]=130.10.17.8
SUBNET_MASK[1]=255.255.0.0
BROADCAST_ADDRESS[1]=130.10.255.255
INTERFACE_STATE[1]=up
DHCP_ENABLE[1]=0

INTERFACE_NAME[2]=lan2
IP_ADDRESS[2]=130.10.16.8
SUBNET_MASK[2]=255.255.0.0
BROADCAST_ADDRESS[2]=130.10.255.255
INTERFACE_STATE[2]=up
DHCP_ENABLE[2]=0

I made the test with linkloop command:

# linkloop -i 1 0x080009D01C06
Link connectivity to LAN station: 0x080009D01C06
-- OK
# linkloop -i 2 0x00108318D721
Link connectivity to LAN station: 0x00108318D721
-- OK

Both lanics check good. Could be only a problem in the speed of my switch ?.

I think that on the server all is ok. So that i could discard the server and make test on the switch.

Best Regards !

Re: Checking lanic status !

Duncan Edmonstone — Fri, 17 May 2002 13:35:55 GMT

Looks to me like you have two seperate interfaces configured in the same IP subnet... this isn't really supported as the IP stack doesn't know which card to route traffic out of... Is there a reason for having two interfaces on the same subnet?

HTH

Duncan

Re: Checking lanic status !

Sridhar Bhaskarla — Fri, 17 May 2002 16:06:17 GMT

Ivan,

As stated by Duncan, both lan1 and lan2 share the same subnet and it will make the system to be confused while using the default gateway. You will need to get rid of one.

-Sri

Re: Checking lanic status !

Steven Sim Kok Leong — Sat, 18 May 2002 01:12:53 GMT

Hi,

You can either get rid of one interface (as mentioned by the rest) or you can split your network into two separate class-C subnets:

Local Area Network 1: 130.10.17.0/24 or 130.10.17.0/255.255.255.0

Local Area Network 2: 130.10.16.0/24 or 130.10.16.0/255.255.255.0

With each NIC card on a separate class-C subnet, your network connectivity will work, provided you specify the correct netmask for each NIC interface in /etc/rc.config.d/netconf along with the correct default route.

Hope this helps. Regards.

Steven Sim Kok Leong

Re: Checking lanic status !

Johan Gjestvang — Tue, 21 May 2002 12:15:33 GMT