文章目录
- 需求
- 相关配置
- 互通性配置
- 配置vmware虚拟机（dhcp）分配IP服务
- 配置dhcp relay（dhcp中继）
- 配置dhcp-snooping（防非法dhcp服务器）
- 配置ip source check（禁手动修改IP）
- DHCP中继（核心交换机）配置文件
需求
- DHCP服务器:vmware虚拟机（dhcp），IP:192.168.5.254 ，可分配192.168.5.X、192.168.10.X、192.168.11.X三个网段的IP
- DHCP中继：华为三层交接机s5700，配置vlan 5、10、11，其中g 0/0/1为dhcp信任接口，g 0/0/10开启dhcp-snooping(防非法dhcp服务器)、ip source check(防非dhcp获取的IP，手动修改IP，数据报文丢弃处理)
- 接入交接机当傻瓜交换机用，不作任何配置。
- PC10:可自动不可手动IP
- PC11:可自动可手动IP
相关配置
互通性配置
- cloud云彩桥接配置
详见：https://blog.csdn.net/xzzteach/article/details/140390519 - DHCP中继交接机（核心交换机）配置
vlan batch 5 10 to 11
int vlanif 5
ip address 192.168.5.254 24
int vlanif 10
ip address 192.168.10.254 24
int vlanif 11
ip address 192.168.11.254 24
int g 0/0/1
port link-type access
port default vlan 5
int g 0/0/10
port link-type access
port default vlan 10
int g 0/0/11
port link-type access
port default vlan 11
此时192.168.5.253、192.168.5.254、192.168.10.254、192.168.11.254，ping是互通的
配置vmware虚拟机（dhcp）分配IP服务
vim /etc/dhcp/dhcpd.conf
内容如下：
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
option domain-name "test.com";
option domain-name-servers 192.168.200.113, 192.168.200.114;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
###网段声明
subnet 192.168.5.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.5.51 192.168.5.199; #ip地址池
#option domain-name-servers ns1.internal.example.org;
#option domain-name "internal.example.org";
option routers 192.168.5.254; # 为客户端设定默认网关
option broadcast-address 192.168.5.255; #为客户端设定广播地址
#default-lease-time 600;
#max-lease-time 7200;
}
###网段声明
subnet 192.168.10.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.10.51 192.168.10.199; #ip地址池
#option domain-name-servers ns1.internal.example.org;
#option domain-name "internal.example.org";
option routers 192.168.10.254; # 为客户端设定默认网关
option broadcast-address 192.168.10.255; #为客户端设定广播地址
#default-lease-time 600;
#max-lease-time 7200;
}
###网段声明
subnet 192.168.11.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.11.51 192.168.11.199; #ip地址池
#option domain-name-servers ns1.internal.example.org;
#option domain-name "internal.example.org";
option routers 192.168.11.254; # 为客户端设定默认网关
option broadcast-address 192.168.11.255; #为客户端设定广播地址
#default-lease-time 600;
#max-lease-time 7200;
}
host pc_deepin { #指定需要分配固定IP地址的客户机名称
hardware ethernet 00:0C:29:25:D4:C6; #指定网卡接口类型和MAC地址
fixed-address 192.168.5.1; #分配给客户端一个固定的地址
server-name "deepin.test.com";#分配给客户端一个计算机名
}
配置dhcp relay（dhcp中继）
- 开启开局dhcp relay
int Vlanif5
dhcp select relay
dhcp relay server-ip 192.168.5.253
#
int Vlanif10
dhcp select relay
dhcp relay server-ip 192.168.5.253
#
int Vlanif11
dhcp select relay
dhcp relay server-ip 192.168.5.253
此时PC10、PC11均能获取到IP
配置dhcp-snooping（防非法dhcp服务器）
- 开启开局dhcp snooping
#
dhcp enable
#
dhcp snooping enable
-配置snooping
int g 0/0/10
dhcp snooping enable
- 设置信任接口
int g 0/0/1
dhcp snooping trusted
配置ip source check（禁手动修改IP）
int g 0/0/10
arp anti-attack check user-bind enable
ip source check user-bind enable
dhcp snooping check dhcp-chaddr enable
- 检验：自动IP
ipconfig /release
ipconfig /renew
ipconfig
- 检验：手动IP
- 查看DHCP中继user-bind
dis dhcp snooping user-blind all
DHCP中继（核心交换机）配置文件
#
sysname Huawei
#
vlan batch 5 10 to 11
#
cluster enable
ntdp enable
ndp enable
#
drop illegal-mac alarm
#
dhcp enable
#
dhcp snooping enable
#
diffserv domain default
#
drop-profile default
#
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http
#
interface Vlanif1
#
interface Vlanif5
ip address 192.168.5.254 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.5.253
#
interface Vlanif10
ip address 192.168.10.254 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.5.253
#
interface Vlanif11
ip address 192.168.11.254 255.255.255.0
dhcp select relay
dhcp relay server-ip 192.168.5.253
#
interface MEth0/0/1
#
interface GigabitEthernet0/0/1
port link-type access
port default vlan 5
dhcp snooping trusted
#
interface GigabitEthernet0/0/2
#
interface GigabitEthernet0/0/3
#
interface GigabitEthernet0/0/4
#
interface GigabitEthernet0/0/5
#
interface GigabitEthernet0/0/6
#
interface GigabitEthernet0/0/7
#
interface GigabitEthernet0/0/8
#
interface GigabitEthernet0/0/9
#
interface GigabitEthernet0/0/10
port link-type access
port default vlan 10
arp anti-attack check user-bind enable
ip source check user-bind enable
dhcp snooping enable
dhcp snooping check dhcp-chaddr enable
#
interface GigabitEthernet0/0/11
port link-type access
port default vlan 11
dhcp snooping enable
#
interface GigabitEthernet0/0/12
#
interface GigabitEthernet0/0/13
#
interface GigabitEthernet0/0/14
#
interface GigabitEthernet0/0/15
#
interface GigabitEthernet0/0/16
#
interface GigabitEthernet0/0/17
#
interface GigabitEthernet0/0/18
#
interface GigabitEthernet0/0/19
#
interface GigabitEthernet0/0/20
#
interface GigabitEthernet0/0/21
#
interface GigabitEthernet0/0/22
#
interface GigabitEthernet0/0/23
#
interface GigabitEthernet0/0/24
#
interface NULL0
#
user-interface con 0
user-interface vty 0 4
#
return
