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S2989G-24TX Operation Manual

Chapter 3 IP services Configuration

3-52

Switch3(Config-if-vlan3)#ip address 192.168.10.222 255.255.255.0

Switch3(Config-if-vlan2)#ip address 192.168.102.2 255.255.255.0

Switch3(Config-if-vlan2)#ip helper 192.168.10.88

Linux ISC DHCP Server supports option 82, its configuration file /etc/dhcpd.con is ddns-

update-style interim;

ignore client-updates;

class "Switch3Vlan2Class1" {

match if option agent.circuit-id = "Vlan2+Ethernet1/0/2" and option

agent.remote-id=00:03:0f:02:33:01;

}

class "Switch3Vlan2Class2" {

match if option agent.circuit-id = "Vlan2+Ethernet1/0/3" and option

agent.remote-id=00:03:0f:02:33:01;

}

subnet 192.168.102.0 netmask 255.255.255.0 {

option routers 192.168.102.2;

option subnet-mask 255.255.255.0;

option domain-name "example.com.cn";

option domain-name-servers 192.168.10.3;

authoritative;

pool {

range 192.168.102.21 192.168.102.50;

default-lease-time 86400; #24 Hours

max-lease-time 172800; #48 Hours

allow members of "Switch3Vlan2Class1";

}

pool {

range 192.168.102.51 192.168.102.80;

default-lease-time 43200; #12 Hours

max-lease-time 86400; #24 Hours

allow members of "Switch3Vlan2Class2";

}