How to configure dhcp from 172.16.101.51 to 172.16.104.254 netmask 255.255.252.0?

D

Detective

Code: 
authoritative;

default-lease-time 3600;
max-lease-time 86400;

ddns-updates on;
ddns-update-style interim;
update-static-leases on;
allow client-updates;

subnet 172.16.0.0 netmask 255.255.252.0 {

  option domain-name "pm1.ktl";
  do-forward-updates true;
  option domain-name-servers 172.16.101.1;
  option routers 172.16.101.1;
  option subnet-mask 255.255.252.0;
  option broadcast-address 172.16.104.255;
  range 172.16.101.51 172.16.104.254; //ERROR IS HERE!!!

include "/etc/namedb/rndc.key";

zone pm1.ktl. {
  primary 127.0.0.1;
  key rndc-key;
}

zone 16.172.in-addr.arpa {
  primary 172.16.101.1;
  key rndc-key;
}
Pls show me how to configure it! Thanks!
 
subnet 172.16.0.0 netmask 255.255.252.0 =
172.16.0.0 - 172.16.3.255

The range (172.16.101.51-172.16.104.254) is way out of your subnet declaration. And so are your gateway and broadcast address. I don't think a broadcast address of 172.16.104.255 is even possible, except in a /24 (255.255.255.0) network.
 
101.51 - 104.254 is in two 22 bit subnets. Namely 172.16.100.0/22 and 172.16.104.0/22.
 
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