RE: How many folks are actually using dynamic IP address assignment?

[Pratik Gupta <[e-mail]>]

On Saturday, October 05, 1996 1:29 PM, Roberto Santarossa aka mongoose[SMTP:[e-mail]] wrote:
> 
>   >> microsoft uses dhcp to assign ip addresses dynamically for its 55,000+
>   >> clients around the world. we have proactively tried to not hand out
>   >> nailed addresses handed out via dhcp. yes we are having to optimize our
>   >> address utilization on a regular basis. in our case it had been the
>   >> original split up of the available address space and having to change it
>   >> as we grew. changing hosts per subnet(s) also keeps this optimization
>   >> interesting.  yes we watch it closely.
>   >
>   >I am just curious to know how people deal with "bogus" DHCP server (i.e.
>   >someone is firing up a "test" DHCP server) which might assign the same
>   >address ranges as the "production" DHCP servers)?
>   >
> 
> And while you are at it, if you are using DNS along with WINS, could
> you enlighten me as to how you trap an expired address and inform the
> DNS server to delete the entry from it's database ? 
> IBM's AIX version has DHCP server s/w and they have a mechanism to 
> update the DNS when an IP is doled out but I'm not aware of any trigger
> to update the DNS when an IP is expired/reclaimed. If you are only using
> WINS, how does a WINS server get updated when a PC is turned off and the
> IP is expired/reclaime ?
> 
> TIA.
> 
> 
> +----------------------------------------------------------------------------+
> |                        | Speed doesn't kill, it's the sudden stops that do |
> | Roberto Santarossa     |                                                   |
> | E-mail: [e-mail]| Gilles  Villeneuve        1982 Zolder, Belgium    |
> | IRC Nick: mongoose     | Ricardo Paletti           1982 Montreal, Canada   |
> | [phone] (x3761) | Roland  Ratzenberger      1994 Imola, Italy       |
> | CAE Electronics Ltd.   | Ayrton  Senna             1994 Imola, Italy       |
> | Montreal, CANADA       | We will always remember ...                       |
> +----------------------------------------------------------------------------+
> 

IBM AIX & OS/2 DHCP-DDNS mechanism puts expiration time on the A & PTR records
which is coordinated with the DHCP lease time. Thus, when the lease expires,
the A & PTR records expire.


-------------------------------------------
Pratik Gupta
OS/2 TCP/IP Development
IBM Corporation
[e-mail]