ADSM-L

IP-Alias on ADSM/AIX server

1999-08-19 13:21:25
Subject: IP-Alias on ADSM/AIX server
From: Reinhold Wagner <rwagner AT ZEUNASTAERKER DOT DE>
Date: Thu, 19 Aug 1999 19:21:25 +0200
Folks,

we have a difficult problem which we can't solve. I know that it's not an ADSM
problem but i spent severall days to get it work but had no success.

Our equipment:

ADSM server on RS/6000 AIX vers. 4, ADSM vers. 3, 1 gigabit ethernet card
NT client, 1 100 mbit ethernet card, 1 gigabit card

The gigabit card of the nt server should be used only for backup.

The NT box has a different ip network on every network interface (172.17.x.x on
100 mbit,
172.20.x.x on the gigabit card). But both interfaces are connected to the same
physical
network.

I defined an IP alias on my ADSM server with the network 172.20.x.x

The NT client answers on pings on both networks. The AIX server does not answer
pings on 172.20.x.x.

This are the static routes:

172.17/16        172.17.1.118      U        29 615422426  en0     -   -
172.18/16        172.17.1.12       UG        0        0  en0     -   -
172.20/16        172.20.1.118      UG        0      951  en0     -   -

ifconfig -a:

en0: flags=e080863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64B
IT>
        inet 172.17.1.118 netmask 0xffff0000 broadcast 172.17.255.255
        inet 172.20.1.118 netmask 0xffff0000 broadcast 172.20.255.255

Funny: If i ping from AIX to NT and vice versa, both machines know the mac
address
of the other box (arp -a) but i don't get an answer at all!

Any ideas?

TIA

Reinhold Wagner, Zeuna Staerker GmbH & Co. KG
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