As per subject, i want to force my clients to use the DHCP server to getting the ip in order to using the internet but i have some servers with static ip, and after i apply this rule(Add ARP For Leases & reply-only), I acheived my goal on client’s side but after that my servers can’t access the internet as well as other network resources…
Please tell me, how i can exclude them from this condition?
thanks in advance!
You will have to put the MAC addresses from your static devices into the ARP table. This should solve your problem.
In case you can’t find it 
/ip arp
Alternately you can do static DHCP assignments for the servers (by client-id or mac-address) and make the servers use DHCP too.
(corrected a thinko DNS vs. DHCP)
DHCP, right? 
But yes that is an alternative.
Yeah, I meant DHCP not DNS. Corrected above.
That’s what happens when you post too early in the morning before the caffeine kicks in… All those D words look the same when your eyes are still bleary.
Just to add my 2 cents…
Starting with a /24, I’ll generally allocate the top /25 (.128-.254) as a DHCP pool (I use clean subnets to make things easier when building address lists or matching IPs). The bottom /25 will be reserved for servers, routers, switches, access points, phones, printers, etc…
I’ll use static DHCP for appliances, phones, printers… and manual configuration for servers and networking devices.
-T
thanks troy for the 2 cents tips.