Roger,
my ADSM server has just a single gigabit ethernet card while
my NT client has two ethernet cards which are connected to
the same physical networks (yes, via a ethernet switch).
The 100 mbit card has two ports and provides fail over (both
ports are connected to different switches). So communication
with the users must be done with this NIC.
To achieve a _super_ backup performance we added an additional
(gigabit) network card. NT supports different IP networks on
every card - but my ADSM server (AIX) has just one network
card :-(
So i added an IP alias on AIX in order to perform the
backup via both gigabit's. But AIX does not respond to
a ping on it's second network address. Interesting is,
that both ping partners know each other's MAC address !?
Any idea?
Reinhold Wagner, Zeuna Staerker GmbH & Co. KG
Roger Hohmann <Roger_Hohmann AT WESTLB DOT DE> on 19.08.99 12:32:02
Bitte antworten an "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
An: ADSM-L AT VM.MARIST DOT EDU
Kopie: (Blindkopie: Reinhold Wagner/A/DE/ZEUNA)
Thema: Re: IP-Alias on ADSM/AIX server
Reinhold,
why are You doing this? Why not only one ip address for each nw card? To
select the client nw card You can use tcpclientaddress?? Maybe Your NT
server or a router/bridge becomes confused about a single mac address
with 2 ip adresses?
AFAQ, it doesn't matter if 2 logical networks are on the same physical
net or not. You need some kind of router between both nets. I wonder how
to drive Gigabit and 100tx on the same 'physical net'. I would expect
some kind of switching hub or router between them.
Regards
Roger
Reinhold Wagner schrieb:
>
> 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
--
Roger Hohmann
Roger Hohmann
Westdeutsche Landesbank Girozentrale
Division: 009 Services
Abteilung: 001-80622
Herzogstra_e 15
D - 40217 D|sseldorf
Tel.: +49211 826 8155
Fax : +49211 826 5393
mailto:roger_hohmann AT westlb DOT de
|
