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Full Discussion: to enable 2nd gateway
Operating Systems AIX to enable 2nd gateway Post 302574327 by newaix on Thursday 17th of November 2011 05:36:55 AM
Old 11-17-2011
to enable 2nd gateway
HI admins,

Server is AIX 5.2

I have 2 NIC card enabled with 2 vlan ips.

en0 - 10.50.102.25 gw 10.50.102.1
en4 - 10.50.103.25 gw 10.50.103.1

I have configured via smitty. But automaticall gateway of en4 changes to 10.50.102.1.

How to make it work so both NICs gets different gateways.

Code:
# ifconfig -a
en0: flags=4e080863,80<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,PSEG,CHAIN>
        inet 10.50.102.25 netmask 0xffffff00 broadcast 10.50.102.255
en4: flags=4e080863,80<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,PSEG,CHAIN>
        inet 10.50.103.25 netmask 0xffffff00 broadcast 10.50.103.255
lo0: flags=e08084b<UP,BROADCAST,LOOPBACK,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT>
        inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255
        inet6 ::1/0
         tcp_sendspace 65536 tcp_recvspace 65536
#

Code:
# netstat -nr
Routing tables
Destination      Gateway           Flags   Refs     Use  If   PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
default          10.50.102.1       UGc       0        0  en0     -   -   =>
default          10.50.103.1       UGc       0        0  en4     -   -
10.50.102.0      10.50.102.25      UHSb      0        0  en0     -   -  =>
10.50.102/24     10.50.102.25      U         3        6  en0     -   -
10.50.102.255    10.50.102.25      UHSb      0        5  en0     -   -
10.50.103.0      10.50.103.25      UHSb      0        0  en4     -   -  =>
10.50.103/24     10.50.103.25      U         4      181  en4     -   -
10.50.103.25     127.0.0.1         UGHS      0        4  lo0     -   -
10.50.103.255    10.50.103.25      UHSb      0        0  en4     -   -
10.50.111.200    10.50.103.1       UGHW      1      452  en4     -   -
10.55.12.155     10.50.103.1       UGHW      0       26  en4  1500     1
10.55.68.10      10.50.102.1       UGHW      1       99  en0  1500   -
10.55.68.11      10.50.103.1       UGHW      0        3  en4     -     1
127/8            127.0.0.1         U         5      207  lo0     -   -

Route Tree for Protocol Family 24 (Internet v6):
::1              ::1               UH        0        0  lo0 16896   -

Can we enable both the gateways.

Regards
newaix
 

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