My router a D-Link  DIR-625 has a function where you can reserve a dhcp
address from within the router's pool list....
my questions are

Isn't this basicly the same as a static ip address as the way i understand
this function is the addess you resever will stay on that device......

Is there any advantage to this?......

And can i just pick any address within the range pool to assign to a
device.....i would much perfer if all my devices/clients were squential in
sequence number.... ie 192.168.0.101 , 102,103.....etc or again is this a
bad idea...

thanks.....

I don't actually know this particular model but if it is the way you make it
sound then yes there IS an advantage. With some items that do routing, you
can choose, in the router, to assign an IP to a specific MAC address. So, if
someone gets wind of which IP number you have and your network passphrase or
encryption key and you limit the router to only as many IP numbers as you
have computers to attach to the router (eg, if you only have 3 computers,
and use the 10.1.1.* range, then 10.1.1.1 will be the router and you limit
IP numbers to 10.1.1.1 to 10.1.1.4), it will interrogate the computer and
get he MAC address of the NIC and if it matches, give it the IP number and
if it doesn't, will reject it.

Personally, I always assign static IP and don't use DHCP for my home network
and for customers I set up. I find it faster to connect to the network in a
lot of situations and in some cases easier for different applications.

Aloha DavidT,

The answer to your questions are yes and yes and yes.

It does essentially work like a static IP because the machine will always
have the same address.  The advantage to doing it with DHCP is that you can
centrally manage those addresses and centrally manage any changes like changes
in default gateway or other network parameters.  DHCP is a powerful and useful
tool for companies and I recommend it in environments where you have more
than a couple of machines.

Yes, you can pick any address in your range.  It doesn't much matter which
addresses though it's generally "best practice" to leave .1 for the default
gateway and most people use the low numbers (.2, .3, .4, etc.) for servers
and other devices.  After that, and aside from .255, you should be able to
use any of the numbers for whatever you want.  Sequential or otherwise.

I probably wouldn't bother doing reservations for client machines unless
you think you need that client machine to always have the same address. Otherwise
I'd just give them a pool of addresses (.101-.125 or something) and let them
have whichever one they get.  Servers should have static or reserved addresses
and most devices (printers, copiers, etc.) are happier with static or reserved
addresses.  For most client machines it doesn't make any difference.

-Ben-
Ben M. Schorr - MVP
Roland Schorr & Tower
http://www.rolandschorr.com
Microsoft OneNote FAQ: http://www.factplace.com/onenotefaq.htm

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