Manual

[phone] www.qtech.ru
Москва, Новозаводская ул., 18, стр. 1
184
}
class "Switch3Vlan2Class2" {
match if option agent.circuit-id = "Vlan2+Ethernet1/0/3" and option agent.remote-
id=00:1f:ce: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";
}
}
Now, the DHCP server will allocate addresses for the network nodes from Switch1 which are
relayed by Switch3 within the range of 192.168.102.21 ~ 192.168.102.50, and allocate
addresses for the network nodes from Switch1 within the range of 192.168.102.51 ~
192.168.102.80.
25.4 DHCP option 82 Troubleshooting
DHCP option 82 is implemented as a sub-function module of DHCP Relay Agent. Before using
it, users should make sure that the DHCP Relay Agent is configured correctly.
DHCP option 82 needs the DHCP Relay Agent and the DHCP server cooperate to finish the
task of allocating IP addresses. The DHCP server should set allocating policy correctly
depending on the network topology of the DHCP Relay Agent, or, even the Relay Agent can