H3C设备配置DHCP中继实现核心层统一分配IP地址

架构图

描述

在CORE-SW设备中运行DHCP服务
R1和R2模拟终端设备

网段: 172.16.10.0/24
网关：172.16.10.254
网段：172.16.20.0/24
网关：172.16.20.254

配置步骤

核心交换机配置

sysname CORE-SW
#
# 核心层和汇聚层的路由
ospf 1 router-id 10.0.0.1
 area 0.0.0.0
  network 10.0.0.1 0.0.0.0
  network 192.168.12.0 0.0.0.255
#
 dhcp enable # 全局启动DHCP服务
# DHCP vlan10 地址池
dhcp server ip-pool vlan10
 gateway-list 172.16.10.254
 network 172.16.10.0 mask 255.255.255.0
# DHCP vlan20 地址池
dhcp server ip-pool vlan20
 gateway-list 172.16.20.254
 network 172.16.20.0 mask 255.255.255.0
# CORE-SW的管理地址
interface LoopBack0
 ip address 10.0.0.1 255.255.255.255
# 设备互联地址
interface HundredGigE1/0/1
 port link-mode route
 ip address 192.168.12.1 255.255.255.0
#

汇聚交换机配置

#
 sysname AGG-SW

#
ospf 1 router-id 10.0.0.2
 area 0.0.0.0
  network 10.0.0.2 0.0.0.0
  network 172.16.10.0 0.0.0.255
  network 172.16.20.0 0.0.0.255
  network 192.168.12.0 0.0.0.255
#
 dhcp enable
#
vlan 1
#
vlan 10
#
vlan 20
#
interface LoopBack0
 ip address 10.0.0.2 255.255.255.0
# Vlan10 的网关
interface Vlan-interface10
 ip address 172.16.10.254 255.255.255.0
 dhcp select relay  # 配置DHCP中继
 dhcp relay information enable  # 启用Option 82
 dhcp relay server-address 10.0.0.1  # 指定DHCP服务的地址
# Vlan20 的网关
interface Vlan-interface20
 ip address 172.16.20.254 255.255.255.0
 dhcp select relay
 dhcp relay information enable
 dhcp relay server-address 10.0.0.1
# 接入设备互联接口
interface HundredGigE1/0/1
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan 1 10 20
# 设备互联地址
interface HundredGigE1/0/7
 port link-mode route
 ip address 192.168.12.2 255.255.255.0

接入交换机配置

上联配置trunk
接终端的口配置access就行了
vlan 10 20
interface HundredGigE1/0/1
 port link-mode bridge
 port access vlan 10
#
interface HundredGigE1/0/2
 port link-mode bridge
 port access vlan 20
#
interface HundredGigE1/0/7
 port link-mode bridge
 port link-type trunk
 port trunk permit vlan 10 20

在终端设备中获取IP地址

interface g1/0
ip addr dhcp-alloc

show ip interface brief