DHCP version compatability in failover configuration

[Glenn Satchell]

>From: "Doug Caviness" <Doug.Caviness at jdsu.com>
>
>Since members of this list steered me right the last time I posted a
>question (thanks to both Glenn Satchell and Simon Hobson) I will ask for
>a little more hand-holding. Figuratively, not literally. 
> 
>
>I have two Solaris SPARC server running v3.0.1 in a failover
>configuration. I want to upgrade them both to v3.0.5. Can I do them one
>at a time or should I bring both down, thus bringing all of DHCP down,
>and upgrade simultaneously? Are there issues with v3.0.1 and v3.0.5
>"talking" to each other to keep the leases synchronized?

I believe this should work fine if you do them one at a time. I'm not
saying you should run for weeks like that, but upgrade one and once the
new daemon is synchronised then upgrade the other one. Something of the
order of minutes or 10s of minutes would be ok.

I tend to only be upgrading one or two minor versons, so I am not 100%
about 3.0.1 to 3.0.5 but I think you should be right.

regards,
-glenn