Question about Static Reservation and Fail-Over

Carlos Dias cmdias at
Mon May 11 19:15:55 UTC 2009

Thank you.

I did'nt think about actually sending out multiple routers in the
subnet.... is there some kind of limitation ?
Or can i just push lets say 100 routers to the clients ?


On Mon, May 11, 2009 at 12:44 PM, Chris Buxton <cbuxton at> wrote:
> On May 11, 2009, at 8:15 AM, Carlos Dias wrote:
>> I'm running a 150 "Shared-networks" setup with ISC DHCP 4.0.1
>> To make it easier to manage I have one (1) config file for each shared
>> network that i "include" in my DHCPD.CONF
>> Some workstations have a reservation in multiple "Shared-networks"
>> Right now I’m doing static reservation in each of the
>> "Shared-networks" for each user... but this is getting complicated and
>> messy.
>> Now the questions:
>> -       Is there a way to create a main reservation file (static.leases)
>> were I can reserve the IP's for the same HOST across the different
>> "Shared-networks" ? I tried via a global reservation but am having
>> trouble providing the clients with their "Gateway" (default router).
> Yes. Create your single global host declaration, with a variety of fixed
> addresses. Then put the routers list in each subnet (not in each pool).
> Remember that reserved addresses inherit configuration from the subnet, but
> not from a dynamic pool.
>> -       Is there a way to run ISC DHCP in failover mode but without
>> "Load-Balancing"
> Not to my knowledge.
> Chris Buxton
> Professional Services
> Men & Mice
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