Originally posted by: ilyes

Hello,
I'm using AIX 6.1 over vios 2.2, the problem is that when I've created LPARs with 2 networks cards, it seem to be good initially, but when I reboot the LPAR(shutdown -Fr) a strange problem appear ,so the partition is not reachable over the LAN . I'm using the management module to enable networking each time I restart the system.
I've found that /etc/rc.net can be a work around, I set the default gateway there.
I've verified the ODM and I found that the config is normal.
I'm using this plateforme for oracle 11g rac and the dba team stress me to give them a solution!

Please help
Best regards
#AIX-Forum

Originally posted by: SystemAdmin

Hi,

How do you define your gateway ?
If you are using route command, it's not persistent across reboot.
An easy way to define persistent route is to use : smitty route
#AIX-Forum

Originally posted by: ilyes

Hi,
thx for your reply ,
I've used smitty tcpip,smitty chinet and smitty route but the problem still exist , but when I added: /usr/sbin/route add 0 mygateway in the /etc/rc.net , the problem is less recurrent but it still exist indeed
when I type :odmget -q 'attribute=route' CuAt ,the route doesn't appear usually
It seem to be that the ODM loose it's gateway ,please a help

Best regards
#AIX-Forum

Originally posted by: ilyes

even the command:chdev -l inet0 -a route=net,-hopcount,0,-netmask,255.255.255.0,-if,en4,,my_gateway faild with errors:
Method error (/usr/lib/methods/chginet):
0514-068 Cause not known.
writing to routing socket: File exists
0821-103 ....
#AIX-Forum

Originally posted by: ilyes

even the command:chdev -l inet0 -a route=net,-hopcount,0,-netmask,255.255.255.0,-if,en4,,my_gateway faild with errors:
Method error (/usr/lib/methods/chginet):
0514-068 Cause not known.
writing to routing socket: File exists
0821-103 ....
#AIX-Forum

Originally posted by: SystemAdmin

Provide me the outputs of next command :

netstat -rn
lsattr -El inet0
#AIX-Forum

Originally posted by: ilyes

root/>netstat -rn
Routing tables
Destination Gateway Flags Refs Use If Exp Groups

Route tree for Protocol Family 2 (Internet):
default my_gateway_address UG 11 106707 en4 - -
....
root/>lsattr -El inet0
authm 65536 Authentication Methods True
bootup_option no Use BSD-style Network Configuration True
gateway Gateway True
hostname rac02 Host Name True
rout6 IPv6 Route True
route Route True
...
#AIX-Forum

Originally posted by: SystemAdmin

Why do you hide IP adresses ? Do you use public network ?
I asked you the outputs to look at your values....

Try setting a default gateway like this :

root# chdev -l inet0 -a route=net,,0,your_gateway

#AIX-Forum

Originally posted by: ilyes

I'm not using public adress,
root/>chdev -l inet0 -a route=net,,0,10.3.4.254
inet0 changed

but the ODM doesn't contain route attribute
thx
#AIX-Forum

Originally posted by: ilyes

I'm not using public adress,
root/>chdev -l inet0 -a route=net,,0,10.3.4.254
inet0 changed

but the ODM doesn't contain route attribute
thx
#AIX-Forum

Originally posted by: SystemAdmin

Please provide some readable outputs (you could use code syntax '{code}')

netstat -rn
lsattr -El inet0
odmget -q 'name=inet0' CuAt
#AIX-Forum

Originally posted by: ilyes

root/>netstat -rn
Routing tables
Destination Gateway Flags Refs Use If Exp Groups

Route tree for Protocol Family 2 (Internet):
default 10.6.8.254 UG 9 119252 en4 - -
10.6.8.0 10.6.8.200 UHSb 0 0 en4 - - = >
10.3.4/24 10.3.4.200 U 13 171660 en4 - -
10.6.8.200 127.0.0.1 UGHS 7 8443 lo0 - -
10.6.8.210 127.0.0.1 UGHS 2 5567 lo0 - -
10.6.8.211 127.0.0.1 UGHS 1 5197 lo0 - -
10.6.8.212 127.0.0.1 UGHS 1 5196 lo0 - -
10.6.8.255 10.6.8.200 UHSb 0 4 en4 - -
127/8 127.0.0.1 U 62 269119 lo0 - -
169.254/16 169.254.161.178 U 51 2124726 en2 - -
169.254.161.178 127.0.0.1 UGHS 37 103033 lo0 - -
169.254.255.255 169.254.161.178 UHSb 0 0 en2 - -
192.168.1.0 192.168.1.21 UHSb 0 0 en2 - - = >
192.168.1/24 192.168.1.21 U 7 832932 en2 - -
192.168.1.21 127.0.0.1 UGHS 0 226 lo0 - -
192.168.1.255 192.168.1.21 UHSb 4 524 en2 - -

Route tree for Protocol Family 24 (Internet v6):
::1%1 ::1%1 UH 45 283193 lo0 - -
########################################################################################
root/>lsattr -El inet0
authm 65536 Authentication Methods True
bootup_option no Use BSD-style Network Configuration True
gateway Gateway True
hostname rac02 Host Name True
rout6 IPv6 Route True
route Route True
############################################################################################

root/>odmget -q 'name=inet0' CuAt

CuAt:
name = "inet0"
attribute = "hostname"
value = "rac02"
type = "R"
generic = "DU"
rep = "s"
nls_index = 24
#AIX-Forum

Originally posted by: ilyes

I've backed up a config of route attribute from the ODM of another aix node and I've restored it and saved the final ODM .

odmget -q "attribute=route" CuAt > aa
odmadd aa
savebase -v
...
Checking boot image size:
new save base byte cnt = 0x360a
Wrote 13834 bytes
Successful completion
######
But this config was defined before and has been changed , so the system cannot be reliable as it is.
Is this behavior an OS bug ? or in the virtualisation technology ...
#AIX-Forum

Originally posted by: alethad

I've never seen this issue unless my configs were off because I did something like typos...etc
I didn't see if you tried removing the NIC entirely and re-config it.
But here's something I found that looked like what you are experiencing. Wouldn't hurt to give it a look.
http://unix.ittoolbox.com/groups/technical-functional/ibm-aix-l/default-gateway-issue-on-aix-52-system-803162

Good Luck.

You've got to continue to grow, or you're just like last night's cornbread -- stale & dry Loretta Lynn alethad
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Originally posted by: ilyes

By removing the default route from ODM and re-config by chdev the problem is solved ,
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