topic Re: Regarding lan interface... in Operating System - HP-UX

Regarding lan interface...

srinu_1 — Mon, 24 Jul 2006 04:29:04 GMT

Hi all,

In one of my hp server(model:9000/800/D390 & OS:11.11i) has two LAN interfaces are there.(lan0 and lan1).
I assigned ipadd. to lan1.After restarting the net services I am geeting the following error.Please find the details below..

bash-2.04# ifconfig lan1
lan1: flags=843
inet 161.85.20.130 netmask ffff0000 broadcast 161.85.255.255
bash-2.04# ifconfig lan0
ifconfig: no such interface
bash-2.04# /sbin/init.d/net stop
bash-2.04# /sbin/init.d/net start
Error:lan0 interface IP address already in use.
bash-2.04#

Plese find the lanadmin command output also.

Enter command: display

LAN INTERFACE STATUS DISPLAY
Mon, Jul 24,2006 14:00:41

PPA Number = 0
Description = lan0 Hewlett-Packard LAN Interface Hw Rev 0
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 10000000
Station Address = 0x80009046d0a
Administration Status (value) = up(1)
Operation Status (value) = down(2)
Last Change = 100
Inbound Octets = 526064
Inbound Unicast Packets = 0
Inbound Non-Unicast Packets = 0
Inbound Discards = 0
Inbound Errors = 0
Inbound Unknown Protocols = 0
Outbound Octets = 789096
Outbound Unicast Packets = 4026
Outbound Non-Unicast Packets = 0
Outbound Discards = 7
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367

Press to continue

Why it's showing lan0?.Where is the wrong?.Please give me your suggestions on this.

Regards,
srinu.

Re: Regarding lan interface...

Torsten. — Mon, 24 Jul 2006 04:33:08 GMT

Have a look at your netconf file. It looks like you defined the same IP address to lan0 and lan1 or at least the address you defined for lan0 is in use by another system. Thats why you get

Error:lan0 interface IP address already in use

Re: Regarding lan interface...

Karsten Löperick — Mon, 24 Jul 2006 04:40:30 GMT

Hello srinu,

just 2 ideas,
have you checked your
-/etc/rc.config.d/netconf (IP Adress config lan0/lan1 )
-/etc/rc.config.d/hpetherconf (or hpGSC100conf - depends of your lan-card type)
here you must setup e.g. the MAC-Adress for the appropriate IP-Adress )
Both files must be written with the correct settings ( lan0 and lan1 ). Please have a look or share those files to the forum.

Best regards
Karsten

Re: Regarding lan interface...

srinu_1 — Mon, 24 Jul 2006 07:05:17 GMT

Hi,
Please find the two files contents below...
#vi /etc/rc.config.d/netconf
INTERFACE_NAME[0]=lan0
IP_ADDRESS[0]=161.85.20.130
SUBNET_MASK[0]=255.255.254.0
BROADCAST_ADDRESS[0]=""
INTERFACE_STATE[0]=""
DHCP_ENABLE[0]=0

and
#vi /etc/rc.config.d/hpethers

# interfaces
#
# HP_ETHER_INTERFACE_NAME Name of interface (lan0, lan1...)
# HP_ETHER_STATION_ADDRESS Station address of interface
# configured through lanadmin(1m)
#
# The interface name, major number, card instance and nmid may be
# obtained from the lanscan(1m) command.
#
# The station address is set through the lanadmin(1m) command.
#
#####################################################################

HP_ETHER_INTERFACE_NAME[0]=
HP_ETHER_STATION_ADDRESS[0]=

###########################################################################
# The HP_ETHER_INIT_ARGS are reserved by HP. They are NOT user changable.

HP_ETHER_INIT_ARGS="HP_ETHER_STATION_ADDRESS"

# End of hpetherconf configuration file

I think Directly editing this files not good way.How to change this lan0 to lan1 in the netconf file.

Regards,
srinu.

Re: Regarding lan interface...

melvyn burnard — Mon, 24 Jul 2006 07:12:32 GMT

well there is your problem, you have configured lan0 and lan1 with the same Ip address.
If you wish to use lan1 and not lan0, edit the netconf file and replace lan0 with lan1.

Re: Regarding lan interface...

Mancboy — Mon, 24 Jul 2006 07:13:40 GMT

Hi Srinu,
you are definitely trying to assign the same IP address to both network cards (I'm not too sure if HPUX supports bonded cards).
Or are you trying to have a failover IP address as per serviceguard or solaris?

But, you can (and are encouraged) to edit the netconf file - this isn't windows.

If you're too wary of editing the file by hand, then SAM will guide you through the network setup.

But please, have a trawl through the file. Understanding how it all hangs together (now) will save you time later in life :-)

Re: Regarding lan interface...

Jaime Bolanos Rojas. — Mon, 24 Jul 2006 07:32:14 GMT

srinu,

Also, here you can see the main difference between Unix and other OS's, will will tell you what is wrong with your system.
In this case you got this error:
Error:lan0 interface IP address already in use.
Just by taking a look at it, you know that you assign the same ip address twice, which as you already know is not good, becuase Ip's are the location for a machine ( the address ) and two machines can not be on the same place.

Regards,

Jaime.

Re: Regarding lan interface...

Karsten Löperick — Mon, 24 Jul 2006 09:01:37 GMT

Hi srinu,

dont'worry about editing those files!
1. get MAC Adresses via lanscan
2. edit netconf
2.1 Duplicate all lines from INTERFACE_NAME[0] to DHCP_ENABLE[0]
2.2 Replace the [0] brackets with [1] and setup the right Interfacename and IP-Adress !
2.3 save
3. edit hpethers
3.1 duplicate the 2 lines HP_ETHER_INTERFACE[0] and HP_ETHER_STATION_ADRESS[0]
3.2 Replace the [0] brackets with [1] and put the right MAC Adress to the right Interface
3.3 save

Restart your network - must be OK now

Best regards

Karsten

Re: Regarding lan interface...

rick jones — Mon, 24 Jul 2006 19:50:29 GMT

Unless you have some esoteric reason to do so, don't go overriding MAC addresses for NICs, so leave the ethers stuff out.

As for a question raised mid-thread, HP-UX does support bonding interfaces. It is called link or port aggregation and the software is called Auto Port Aggregation or APA. Should be details about it at docs.hp.com

Re: Regarding lan interface...

srinu_1 — Wed, 26 Jul 2006 01:30:56 GMT

Thanks for your information.
now it's working fine.I assigned points to every one.

regards,
srinu.