[mdlug] DHCP question

[R. Kannan]

Turns out that the print server 'forgets' its IP address after a few hours of non-use and does not respond to 'ping'. Setting static or dynamic IP addresses does not make a difference to the behavior. The only fix is to 'reboot' the server by powering it off & on.

I have contacted the tech support to see if there is a fix.

Thanks

-----Original Message-----
>From: Robert Adkins <radkins at impelind.com>
>Sent: Aug 7, 2007 12:19 PM
>To: "'R. Kannan'" <rkannan at peoplepc.com>, 'MDLUG's Main discussion list' <mdlug at mdlug.org>
>Subject: RE: [mdlug] DHCP question
>
>	Go ahead and assign the print server a static IP Address.
>
>	The way DHCP works is that the DHCP server does a few things when it
>receives a request.
>
>	First, it checks available addresses by looking at the leased
>address list.
>
>	Then, it decides upon an IP Address it wants to assign.
>
>	After determining the address is wants to assign it sends out a
>quick broadcast, basically saying, "Hey! I want to hand out Address X to
>So-and-So, does anyone object?"
>
>	If something on the network has that address, statically assigned or
>otherwise a response comes back, "Uh... Dude! I am totally using that
>address, don't go an bogart my address by giving it to someone else! I am
>not in the mood for a fight!"
>
>	Then the DHCP server goes back to figuring out which address it can
>hand out and does another broadcast.
>
>	Basically, you won't have anything to worry about by putting one
>machine as a static address. Another thing you could do is set the range of
>DHCP available addresses to a certain number, say 5 to 10 different
>adddresses and then place the Print server in an address outside of that
>range. (Make sure you use the same subnet though...)
>
>	-Rob
>
>
>
>> -----Original Message-----
>> From: mdlug-bounces at mdlug.org 
>> [mailto:mdlug-bounces at mdlug.org] On Behalf Of R. Kannan
>> Sent: Tuesday, August 07, 2007 12:15 PM
>> To: mdlug at mdlug.org
>> Subject: [mdlug] DHCP question
>> 
>> All,
>> 
>> I have a router which runs firewall and a DHCP server. I also 
>> have a wireless print server (it is a long story) which acts 
>> as client pulling IP addresses. The lease time is set at 24 
>> hrs but I find that the print server is not requesting for a 
>> renewal causing my print jobs to fail after the lease 
>> expires. Rebooting the print server causes it to make another 
>> request and so fixes the problem. I cannot find a way of 
>> making the print server request a renewal periodically (I 
>> thought DHCP standard requires a renewal request after 50% of 
>> the time had past).
>> 
>> My question is can I go around this problem by assigning 
>> static IP address to the print server and making sure that 
>> that the DHCP server does not assign that to other clients? 
>> 
>> TIA for your help
>> 
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>


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