Lose default gateway


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Operating Systems AIX Lose default gateway
# 1  
Lost default gateway

hello

iv 2 AIX P720 machine aix 6.1 6100-02-03-0909 both , hacmp ver 6.1.0.0
both machine connect to the same switch. after networking fault , one of the machines lost his default gateway !!!

what can be the reason ?

thx
# 2  
Quote:
Originally Posted by ariec
both machine connect to the same switch. after networking fault , one of the machines lost his default gateway !!!

what can be the reason ?
Whatever put the static route into place can be the culprit.

For instance: if you have the systems configured as a DHCP client they might have been provided with a default route by the DHCP server. If this didn't provide the default again after the network failure (for whatever reason) it might be lost.

Another possibility: the default route was configured with a "route add" command and this will not survive a reboot. Use chsys to put a default route in place which will survive a reboot.

There are more (less common) reasons but without more information it is not possible to find out.

Btw: we have a forum specializing in AIX. You might want to put AIX-related questions there.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
# 3  
Lose default gateway

hello

iv 2 AIX P720 machine aix 6.1 6100-02-03-0909 both , hacmp ver 6.1.0.0
both machine connect to the same switch. after networking fault , one of the machines lost his default gateway !!!

what can be the reason ?

thx
# 4  
Hi,

Probably when set up it was not set up properly, some unix commands in Aix do not persist like they do in HPUX or Solaris - "ifconfig" being one of these.

Normally when I worked on AIX in the dim and distant past, you had to use the standard AIX commands or SMIT to setup things like interfaces or they were not persistent.

Regards

Dave

Last edited by gull04; 09-08-2014 at 08:38 AM.. Reason: Typo
# 5  
Moderator's Comments:
Mod Comment When i told you that you can ask such questions in the AIX forum i didn't mean you have to ignore my answer and just open a new thread here.

If you want to have a thread moved from one forum to the other please ask a moderator to do so for you. Thank you.

Threads merged.


bakunin
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