Originally posted by: SystemAdmin

Does anyone know how to maintain a changed GW on reboot? I need to permanently remove the .254 GW but it returns every reboot despite all my efforts to remove it.
e.g.
bash-2.05# netstat -rn
Routing tables
Destination Gateway Flags Refs Use If PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
default 10.130.12.254 UGc 0 0 en0 - - =>
default 10.130.12.1 UGc 0 0 en0 - -
<snip>

bash-2.05# route delete 0 10.130.12.254
10.130.12.254 net 0: gateway 10.130.12.254

Now it looks good:
bash-2.05# netstat -rn
Routing tables
Destination Gateway Flags Refs Use If PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
default 10.130.12.1 UGc 0 0 en0 - -
10.130.11.10 10.130.12.1 UGHW 0 480 en0 - 1
<snip>

bash-2.05# route change 0 10.130.12.1 -active_dgd
-active_dgd net 0: gateway 10.130.12.1

Looking even better:
bash-2.05# netstat -rn
Routing tables
Destination Gateway Flags Refs Use If PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
default 10.130.12.1 UGcA 0 0 en0 - -
10.130.11.10 10.130.12.1 UGHWA 0 45 en0 - 1

Reboot and go get a coffee:
Now the machine does not return a ping except to machines on the same subnet and it is back to the original netstat:
bash-2.05# netstat -rn
Routing tables
Destination Gateway Flags Refs Use If PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
default 10.130.12.254 UGc 0 0 en0 - - =>
default 10.130.12.1 UGc 0 0 en0 - -
<snip>

Previously it was returning pings from machines on various different subnets.

There must be something simple that I am missing, Can anyone help?
Thanks
#AIX-Forum

Originally posted by: alethad

You didn't say so I'll ask. Did you change en0 or other interfaces to the new gateway address?

regards
alethad
#AIX-Forum

Originally posted by: SystemAdmin

Yes en0 is the interface, In smitty it all looks fine it has all the correct details after I do the route delete 0 10.130.12.254
It really is just a case of making the settings last on reboot.
#AIX-Forum

Originally posted by: alethad

Forgot to say.
If you're not changing the gateway on the interfaces I'm not sure the routing table actually gets flushed on reboot. I think that info is still stored. Have you tried flushing that particular IP?
If .254 GW is still up & running not sure it won't be detected.
Just make sure you don't have .254 config'd to any of your interfaces.

Good luck.
alethad
#AIX-Forum

Originally posted by: SystemAdmin

Use the "chdev" command or "smitty route" to make the change that will persist. Something like:

chdev -l inet0 -a route=blahblah

Use "lsattr -El inet0" to see the stored settings.
#AIX-Forum

Originally posted by: SystemAdmin

bash-2.05# lsattr -El inet0
authm 65536 Authentication Methods True
<snip>
route net,-hopcount,0,,0,10.130.12.254 Route True
route net,-hopcount,0,,0,10.130.12.1 Route True

bash-2.05# chdev -l inet0 -a route=10.130.12.1
Method error (/usr/lib/methods/chginet):
0514-034 The following attributes do not have valid values:

No output

I have tried flushing all routes and recreating it using mktcpip for en0 just cant seem to drop this bogus route
#AIX-Forum

Originally posted by: hdkutz

To change a route do:
/usr/sbin/chdev -l inet0 -a route=net,-hopcount,1,-netmask,255.255.255.0,0,10.130.12.1
To delete a route do:
lsattr -El inet0
Use the Output to remove the route you want to delete:
chdev -l inet0 -a delroute=net,-hopcount,0,,0,10.130.12.1

Cheers,
ku
#AIX-Forum

Originally posted by: SystemAdmin

Cheers hdkutz this is the info I needed
All is fixed now - much appreciated
Thanks
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