Failure of dhcp server failover

[sthaug at nethelp.no]

> As I have wrote in the first letter, AP makes use of several IP addresses (one per vlan)
> asking for them using the same MAC address. Such requests differ in option 82 only,
> so I'm forced to use classes and matching against agent.circuit-id.
> 
> Is it possible to assign more than one fixed-address to the same MAC depending on vlan tag
> without usage of classes?

Keep in mind that the DHCP server knows nothing about VLANs. It knows
about interfaces and their IP addresses. However, because the DHCP
server needs to be able to handle broadcast traffic (unless you use a
relay agent), there may be problems keeping broadcast traffic from
different VLAN-based interfaces apart, at least for some operating
systems.

You should be able to match on circuit ID just fine, though.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no