dhcp limit lease per interface

S

spring_64

Hi,
I have two question about DHCP. In cisco routers I notice that we have two commands:

Code: 
R1(config)#ip dhcp limit lease per interface ?
  <1-65535>  Number of dhcp lease per interface
 
R1(config)#interface f0/0
R1(config-if)#ip dhcp limit lease ?
  <1-65535>  Number of dhcp lease per interface

I think the command number one is global for all interfaces and the other one is for particular interface.

In dhcpd.conf, which commands for implementation of these rules?
 
For something simpler couldn't you just limit the 'range' directive of IP's to suit your interface? In this case I limit it to 12 leases.
This will means there are only 12 IP's for it to give out for that interface. Hence limiting leases per interface.
Code: 
}
#CPE subnet
interface em1;
subnet 192.168.224.0 netmask 255.255.224.0 {
authoritative;
option routers 192.168.224.1;
range 192.168.225.1 192.168.225.12;
optiion domain-name-server 8.8.8.8;
default-lease-time 3600;
max-lease-time 7200;
allow unknown-clients;
}
 
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