Wrong LANIC being used

[Fern H2O]

Hi Everyone, Here's my issue:

I'm using Netbackup to backup a server that has 2 LAN cards. One is 100Mb/s and the other is 1Gb/s. We're using the 100Mb/s lan card for regular connections and jobs but I want to use the 1Gb/s LAN card for Backing up the system. I set both IP's, one on LAN 0 and the other on LAN 1. They both work perfectly but here's my problem. Netbackup is backing up the server using the 100Mb/s LAN card but it shouldn't be.

1) The master server only has the IP of the Gb lan card. So why is it using the other LAN card which has a totally different IP?? Can anyone please help me!

FYI:
I know it's using LAN 0 because I looked at the activity from both LAN cards while the backup is running.

The IP's are on different subnets.
LAN0 : xxx.xx.11.130
LAN1 : xxx.xx.12.15

Netbackup only has IP of LAN1 and so does the Media Server.

[Steven E. Protter]

Shalom,

Netbackup, when I used it curiously relied on /etc/hosts networking not DNS when doing its backup.

There must be an entry in /etc/hosts that supportss and matches the link that netbackup is using.

You may have to run through the configuration process on netbackup again, but since I've experienced that and not had to do that step, I think that unlikely.

Obviously netbackup's connection from outside that initiates the backup must also be configured to use the 12.15 network or all will be for naught.

SEP

[John Payne_2]

You can also look at setting the ndd parameter "ip_strong_es_model". (Assuming it's not just the /etc/hosts file, as SEP suggests, definitely try that first, it's much simpler than this.) Basically what it does is allow you to have multiple default gateways for a machine. Then, the traffic that comes in an interface goes back out that same interface.

$ ndd -h ip_strong_es_model

ip_strong_es_model:

Controls support for "Strong End-System Model" described in
RFC1122, Section 3.3.4.2. When enabled, packet source addresses
(and therefore interfaces on a multihomed host) affect selection
of a gateway for outbound packets. Set to 0 to disable; set to 1
to enable. [0,1] Default: 0 (disable)


Hope it helps
John