OT-Re: test post

[Jonathan Hutchins]

> -----Original Message-----
> From: Brian Densmore [mailto:DensmoreB at ctbsonline.com]

> Can a DHCP server re-assign an IP address to a currently 
> connected device, without that device having
> to bring networking down and back up? 

Yes, but...

When you configure DHCP, you establish a "lease time" that the assignment is
good for.  Most clients start checking in at about 50% of the lease time.
If, at that time, there is a change, DHCP can change any and all settings on
a "live" connection.  You have to compromise between rapid updates/changes
and network traffic - obviously a large DHCP pool with a short least time
would result in DHCP storms.

In the case of a long lease time and the need to make a quick change, you
just make the changes in DHCP, implement the other change, and figure about
half the users will reboot on their own, while the others can be told to
when they call the Help Desk because something stopped working.