Failover concept clarification

pat patkumar82 at
Thu Jun 18 10:41:43 UTC 2009

so now i got both the timers from omshell


so now what is the timer it will wait for to server all the lease.


On Thu, Jun 18, 2009 at 11:15 AM, pat <patkumar82 at> wrote:

> Hi david,
> I didn't understand, how STOS is calculated ? is it from time stamp ?? mclt
> we can make out from the active server configuration for can you explain me
> bit detailed.
> Thanks
> Pat
> On Wed, Jun 17, 2009 at 10:48 PM, David W. Hankins <dhankins at>wrote:
>>  On Wed, Jun 17, 2009 at 04:15:04PM +0530, pat wrote:
>> >   I was performing a failover test in lab with loadbalance split 128, as
>> one
>> > of the test case i made one of the partner/ peer state down and started
>> to
>> > acquire lease using the tool, i found after leasing out half of the pool
>> an
>> > error message thrown as peer hold all free leases, but when i went
>> through
>> > the dhcpd manual it says when the partner is down the active one will
>> hold
>> > all the lease in the pool and will not loadbalance.
>> The Start Time of Service upon entering the partner-down state is used
>> as a reference for the last time the partner server was potentially
>> capable of transmitting a reply to any DHCP client.
>> So as a safety catch to eliminate potential duplicate allocations, the
>> server will not allocate a lease its peer may have until STOS+MCLT
>> expires.
>> --
>> David W. Hankins        "If you don't do it right the first time,
>> Software Engineer                    you'll just have to do it again."
>> Internet Systems Consortium, Inc.               -- Jack T. Hankins
>> _______________________________________________
>> dhcp-users mailing list
>> dhcp-users at
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