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Page 25 | AlliedWare™ OS How To Note: DHCP Snooping on Rapier-style switches
Appendix
1
: ISC DHCP server
Appendix
1
: ISC DHCP server
One DHCP server that has been tested against DHCP snooping is ISC DHCP. This is free
software with an option of a support contract. At the time of writing this document, ISC
DHCP did not support the logging of RFC3993 sub-option 6. For convenience, here is a
sample configuration (dhcpd.conf) for ISC DHCP.
This configuration lets you specify the IP that is given to each MAC address. You may easily
write a range statement to assign to any client.
ddns-update-style ad-hoc;
option domain-name "test.yourdomain.com";
option domain-name-servers 172.16.1.253;
option broadcast-address 172.16.1.255;
option subnet-mask 255.255.255.0;
use-host-decl-names on;
subnet 172.16.1.0 netmask 255.255.255.0 {
#filename "/vmlinuz ";
default-lease-time 86400;
option subnet-mask 255.255.255.0;
option domain-name "test.yourdomain.com";
option domain-name-servers 172.16.1.1;
option routers 172.16.1.1;
option broadcast-address 172.16.1.255;
host linux {
hardware ethernet 00:06:5b:31:14:af;
fixed-address 172.16.1.100;
filename "/vmlinuz ";
}
host test01 {
hardware ethernet 00:00:00:00:00:01;
fixed-address 172.16.1.201;
}
host test02 {
hardware ethernet 00:00:00:00:00:02;
fixed-address 172.16.1.202;
}
host test03 {
hardware ethernet 00:00:00:00:00:03;
fixed-address 172.16.1.203;
}
host RapierMAX {
hardware ethernet 00:00:cd:11:b2:4c;
fixed-address 172.16.1.123;