Thomas,
I have "broken" IP's off of subnets before and routed them to other hosts as
you are asking. How I would do it in this scenario is as follows:
On ZLB:
1) Create a cluster Virtual IP on the correct subnet. In this example,
let's say 192.168.1.10.
2) Create a cluster Virtual IP for the IP that is not on that same subnet.
For this example, we will use 172.16.1.10.
3) Configure your ZLB farm to use 172.16.1.10 as the IP to bind to.
On the router that is the default gateway for 192.168.1.10:
1) Configure a static route pointing 172.16.1.10 to 192.168.1.10
a. On a cisco router the command would be:
b. "ip route 172.16.1.10 255.255.255.255 192.168.1.10"
2) Ensure that proxy arping is enabled on your router (It is enabled by
default on Cisco Routers)
a. This step is KEY if you want other servers on the 172.16.1.XXX network
to be able to see 172.16.1.10
3) Ensure that the static route is redistributed into your internal
routing protocol, so that all routers know to send traffic for the 172.16.1.10
IP to this router.
By doing it this way, if the 192.168.1.10 Virtual IP fails over to the
secondary node (along with the 172.16.1.10 IP) your router will still route the
packets to the ZLB node responsible for handling the farm.
I just configured this on my ZLB and it worked fine.
Hope that helps,
-Pete
From: Thomas Plant | Limitis [mailto:[email protected]]
Sent: Monday, March 04, 2013 8:59 AM
To: [email protected]
Subject: [Zenloadbalancer-support] Multiple IPs from different Networks
Hello.
We here would have the necessity to add to our loadbalancer cluster an IP which
is not part of the subnet of the active public network card. Is this somehow
possible?
For example:
eth0 is the public interface with IP
192.168.1.0/24
how can I add a virtual IP which is not part of
the above subnet?
Thanks
Thomas
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