拓扑图如上图所示,R1作为交换及,DS1作为多层交换机,AS1,AS2模拟主机。AS1,AS2都自动获取ip地址,并将R1当作dhcp服务器。
R1其配置如下:
ip dhcp excluded-address 192.168.3.1
ip dhcp excluded-address 192.168.3.2
ip dhcp pool net2
network 192.168.1.0 255.255.255.0
ip dhcp pool net3
network 192.168.2.0 255.255.255.0
no ip domain lookup
interface Loopback0
ip address 1.1.1.1 255.255.255.255
interface FastEthernet0/0
ip address 192.168.3.1 255.255.255.0
router eigrp 1
network 1.1.1.1 0.0.0.0
network 192.168.3.0
DS1的配置如下:
ip routing
interface FastEthernet0/0
no switchport
ip address 192.168.3.2 255.255.255.0
interface FastEthernet0/1
switchport access vlan 2
no ip address
interface FastEthernet0/2
switchport access vlan 3
no ip address
interface Vlan2
ip address 192.168.1.1 255.255.255.0
ip helper-address 192.168.3.2//由于dhcp是以广播的形式向外发送的,而路由器以及三层交换机是抑制广播域的,所以要在接口上配置一个辅助接口,来转发广播
interface Vlan3
ip address 192.168.2.1 255.255.255.0
ip helper-address 192.168.3.2
router eigrp 1
network 192.168.1.0
network 192.168.2.0
network 192.168.3.0
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