Failover without shared-network?
dhcp1 at thehobsons.co.uk
Tue Jul 18 16:30:46 UTC 2006
Ken Roberts wrote:
>I have a server version 3.0.3-r9 running on an up-to-date Gentoo system
>which uses a 2.6 kernel. It's an office setting with a set of Cisco
>layer 3 switches using approximately 10 VLANs, which are separate
>physical networks that map to subnet constructs in the dhcp
>configuration file. This configuration works exactly the way I want it
>Now, the problem. I need to set up failover.
>The documentation says I need a shared-network construct around
>everything that is to have failover service.
Where, I don't see that ?
> It further says that
>inside a shared-network construct all the pools are jumbled together and
>handed out randomly. That's paraphrasing of course.
>In my understanding, shared-network means that several subnets are
>sharing the same physical network. This is not the case for me, but the
>Cisco gear is using an ip helper-address that points to my DHCP server,
>and forwards enough information that my clients get addresses that are
>appropriate to the VLAN.
>The question here is, what is that shared-network construct going to do
It would totally screw you up ! You do NOT want to do shared-network
if you don't have one.
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