H3C DHCP快速配置指南

1 配置DHCP服务器动态分配IPv4地址

1.2 组网需求

如1.2 图1所示，公司将交换机做为核心交换机，现在需要在核心交换机上划分3个VLAN网段，HostA、Host B和Host C分别属于VLAN 5、VLAN 6和VLAN 7，要求在交换机上配置DHCP服务器功能，分别给主机分配不同网段的IP地址。

· 作为DHCP服务器的Switch为网段192.168.5.0/24、192.168.6.0/24和192.168.7.0/24中的客户端动态分配IP地址；

· Switch的三个VLAN接口，VLAN接口5、VLAN接口6和VLAN接口7的地址分别为192.168.5.254/24、192.168.6.254/24和192.168.7.254/24；

· 192.168.5.0/24网段内的DNS服务器地址为192.168.5.100/24，网关的地址为192.168.5.254/24；

· 192.168.6.0/24网段内的DNS服务器地址为192.168.6.100/24，网关的地址为192.168.6.254/24；

· 192.168.7.0/24网段内的DNS服务器地址为192.168.7.100/24，网关的地址为192.168.7.254/24。

图1 DHCP服务器配置组网图

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1.3 配置步骤

# 配置端口所属VLAN和对应VLAN接口的IP地址，IP地址即是对应VLAN的网关地址。

<Switch> system-view

[Switch] vlan 5

[Switch-vlan5] port gigabitEthernet 1/0/5

[Switch-vlan5] quit

[Switch]vlan 6

[Switch-vlan6] port gigabitEthernet 1/0/6

[Switch-vlan6] quit

[Switch]vlan 7

[Switch-vlan7] port gigabitEthernet 1/0/7

[Switch-vlan7] quit

[Switch] interface vlan-interface 5

[Switch-Vlan-interface5] ip address 192.168.5.254 255.255.255.0

[Switch-Vlan-interface5] quit

[Switch]interface vlan-interface 6

[Switch-Vlan-interface6] ip address 192.168.6.254 255.255.255.0

[Switch-Vlan-interface6] quit

[Switch]interface vlan-interface 7

[Switch-Vlan-interface7] ip address 192.168.7.254 255.255.255.0

[Switch-Vlan-interface7] quit

# 配置不参与自动分配的IP地址（DNS服务器等，此步为选配）

[Switch] dhcp server forbidden-ip 192.168.5.100

[Switch] dhcp server forbidden-ip 192.168.6.100

[Switch] dhcp server forbidden-ip 192.168.7.100

# 配置DHCP地址池5，用来为192.168.5.0/24网段内的客户端分配IP地址。

[Switch] dhcp server ip-pool 5

[Switch-dhcp-pool-5] network 192.168.5.0 mask 255.255.255.0

[Switch-dhcp-pool-5] dns-list 192.168.5.100

[Switch-dhcp-pool-5] gateway-list 192.168.5.254

[Switch-dhcp-pool-5] quit

# 配置DHCP地址池6，用来为192.168.6.0/24网段内的客户端分配IP地址。

[Switch] dhcp server ip-pool 6

[Switch-dhcp-pool-6] network 192.168.6.0 mask 255.255.255.0

[Switch-dhcp-pool-6] dns-list 192.168.6.100

[Switch-dhcp-pool-6] gateway-list 192.168.6.254

[Switch-dhcp-pool-6] quit

# 配置DHCP地址池7，用来为192.168.7.0/24网段内的客户端分配IP地址。

[Switch] dhcp server ip-pool 7

[Switch-dhcp-pool-7] network 192.168.7.0 mask 255.255.255.0

[Switch-dhcp-pool-7] dns-list 192.168.7.100

[Switch-dhcp-pool-7] gateway-list 192.168.7.254

[Switch-dhcp-pool-7] quit

# 开启DHCP服务

[Switch] dhcp enable

# 配置VLAN接口5、6和7工作在DHCP服务器模式。

[Switch] interface vlan-interface 5

[Switch-Vlan-interface5] dhcp select server

[Switch-Vlan-interface5] quit

[Switch] interface vlan-interface 6

[Switch-Vlan-interface6] dhcp select server

[Switch-Vlan-interface6] quit

[Switch] interface vlan-interface 7

[Switch-Vlan-interface7] dhcp select server

[Switch-Vlan-interface7] quit

1.4 验证配置

配置完成后，5、6、7三个网段客户端可以从DHCP服务器申请到相应网段的IP地址和网络配置参数。

1. 显示DHCP服务器的配置

# 显示DHCP地址池的信息。

[Switch] display dhcp server pool

Pool name: 5

Network: 192.168.5.0 mask 255.255.255.0

dns-list 192.168.5.100

expired day 1 hour 0 minute 0 second 0

gateway-list 192.168.5.254

IP-in-use threshold 100

Pool name: 6

Network: 192.168.6.0 mask 255.255.255.0

dns-list 192.168.6.100

expired day 1 hour 0 minute 0 second 0

gateway-list 192.168.6.254

IP-in-use threshold 100

Pool name: 7

Network: 192.168.7.0 mask 255.255.255.0

dns-list 192.168.7.100

expired day 1 hour 0 minute 0 second 0

gateway-list 192.168.7.254

IP-in-use threshold 100

2. 显示DHCP服务器的IP地址分配信息

# 显示DHCP地址绑定信息。在显示信息里可以查看DHCP服务器为客户端分配的IP地址。

[Switch] display dhcp server ip-in-use

IP address Client-identifier/ Lease expiration Type

Hardware address

192.168.5.1 0262-1d36-1802-00 Feb 18 10:41:21 2023 Auto(C)

3264-2e30-3130-322d-

566c-616e-3130

192.168.6.1 0262-1d3b-7403-00 Feb 18 10:41:17 2023 Auto(C)

192.168.7.2 0262-1d41-8304-00 Feb 18 10:41:41 2023 Auto(C)

# 显示DHCP地址池的空闲地址信息。

[Switch] display dhcp server free-ip

Pool name: 5

Network: 192.168.5.0 mask 255.255.255.0

IP ranges from 192.168.5.2 to 192.168.5.99

IP ranges from 192.168.5.101 to 192.168.5.254

Pool name: 6

Network: 192.168.6.0 mask 255.255.255.0

IP ranges from 192.168.6.2 to 192.168.6.99

IP ranges from 192.168.6.101 to 192.168.6.254

Pool name: 7

Network: 192.168.7.0 mask 255.255.255.0

IP ranges from 192.168.7.2 to 192.168.7.99

IP ranges from 192.168.7.101 to 192.168.7.254

# 显示租约过期的地址绑定信息。当分配的IP地址的租约超过有效期限后，执行本命令可以查看到租约过期的地址绑定信息（通过expired命令可以配置租约有效期，缺省有效期限为1天）。

[Switch] display dhcp server expired

IP address Client-identifier/Hardware address Lease expiration

192.168.7.1 0262-1d36-2703-00 Feb 17 10:53:52 2023

3. 清除DHCP服务器的IP地址分配信息

# 清除DHCP的正式绑定和临时绑定信息。请在用户视图下执行本命令。

[Switch] quit

<Switch> reset dhcp server ip-in-use

# 显示DHCP地址绑定信息。此时设备上不存在相关信息。

<Switch> display dhcp server ip-in-use

IP address Client-identifier/ Lease expiration Type

Hardware address

# 清除租约过期的地址绑定信息。请在用户视图下执行本命令。

<Switch> reset dhcp server expired

# 显示租约过期的地址绑定信息。此时设备上不存在相关信息。

<Switch> display dhcp server ip-in-use

IP address Client-identifier/ Lease expiration Type

Hardware address

4. 显示和清除DHCP服务器的统计信息

# 显示DHCP服务器的统计信息。

<Switch> dis dhcp server statistics

Pool number: 3

Pool utilization: 0.00%

Bindings:

Automatic: 0

Manual: 0

Expired: 3

Conflict: 0

Messages received: 170

DHCPDISCOVER: 57

DHCPREQUEST: 57

DHCPDECLINE: 0

DHCPRELEASE: 56

DHCPINFORM: 0

BOOTPREQUEST: 0

Messages sent: 114

DHCPOFFER: 57

DHCPACK: 57

DHCPNAK: 0

BOOTPREPLY: 0

Bad Messages: 0

# 清除DHCP服务器的统计信息。请在用户视图下执行本命令。

<Switch> reset dhcp server statistics

# 清除DHCP服务器的统计信息后，设备上不存在相关统计信息。

<Switch> dis dhcp server statistics

Pool number: 3

Pool utilization: 0.39%

Bindings:

Automatic: 3

Manual: 0

Expired: 0

Conflict: 0

Messages received: 0

DHCPDISCOVER: 0

DHCPREQUEST: 0

DHCPDECLINE: 0

DHCPRELEASE: 0

DHCPINFORM: 0

BOOTPREQUEST: 0

Messages sent: 0

DHCPOFFER: 0

DHCPACK: 0

DHCPNAK: 0

BOOTPREPLY: 0

Bad Messages: 0

1.5 配置文件

· Switch：

dhcp enable

dhcp server forbidden-ip 192.168.5.100

dhcp server forbidden-ip 192.168.6.100

dhcp server forbidden-ip 192.168.7.100

vlan 5 to 7

dhcp server ip-pool 5

gateway-list 192.168.5.254

network 192.168.5.0 mask 255.255.255.0

dns-list 192.168.5.100

dhcp server ip-pool 6

gateway-list 192.168.6.254

network 192.168.6.0 mask 255.255.255.0

dns-list 192.168.6.100

dhcp server ip-pool 7

gateway-list 192.168.7.254

network 192.168.7.0 mask 255.255.255.0

dns-list 192.168.7.100

interface Vlan-interface5

ip address 192.168.5.254 255.255.255.0

dhcp select server

interface Vlan-interface6

ip address 192.168.6.254 255.255.255.0

dhcp select server

interface Vlan-interface7

ip address 192.168.7.254 255.255.255.0

dhcp select server

interface GigabitEthernet1/0/5

port link-mode bridge

port access vlan 5

interface GigabitEthernet1/0/6

port link-mode bridge

port access vlan 6

interface GigabitEthernet1/0/7

port link-mode bridge

port access vlan 7

1.6 相关资料

· 产品配套“三层技术-IP业务配置指导”中的“DHCP”。

· 产品配套“三层技术-IP业务命令参考”中的“DHCP”。

2 配置DHCP中继

2.1 简介

本案例介绍配置接口工作在DHCP中继模式，当DHCP客户端和DHCP服务器处于不同物理网段时，用于实现客户端可以通过DHCP中继与DHCP服务器通信，获取IP地址及其他配置信息。

2.2 组网需求

· DHCP客户端所在网段为10.10.1.0/24，DHCP服务器的IP地址为10.1.1.1/24；

· 由于DHCP客户端和DHCP服务器不在同一网段，因此，需要在客户端所在网段设置DHCP中继设备，以便客户端可以从DHCP服务器申请到10.10.1.0/24网段的IP地址及相关配置信息；

· Switch A作为DHCP中继通过端口（属于VLAN10）连接到DHCP客户端所在的网络，交换机VLAN接口10的IP地址为10.10.1.1/24，VLAN接口20的IP地址为10.1.1.2/24。

图2 DHCP中继配置组网图

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2.3 配置步骤

· 配置DHCP服务器Switch B

# 创建VLAN接口和IP地址。

<SwitchB> system-view

[SwitchB] vlan 20

[SwitchB-vlan20] port gigabitEthernet 1/0/1

[SwitchB-vlan20] quit

[SwitchB] interface vlan-interface 20

[SwitchB-Vlan-interface20] ip address 10.1.1.1 255.255.255.0

[SwitchB-Vlan-interface20] quit

# 配置DHCP地址池5，用来为10.10.1.0/24网段内的客户端分配IP地址。

[SwitchB] dhcp server ip-pool 5

[SwitchB-dhcp-pool-5] network 10.10.1.0 mask 255.255.255.0

[SwitchB-dhcp-pool-5] dns-list 10.10.1.100

[SwitchB-dhcp-pool-5] gateway-list 10.10.1.1

[SwitchB-dhcp-pool-5] quit

# 配置和DHCP客户端互通的静态路由。

[SwitchB] ip route-static 10.10.1.0 24 10.1.1.2

# 开启DHCP服务

[SwitchB] dhcp enable

# 配置VLAN接口20工作在DHCP服务器模式。

[SwitchB] interface vlan-interface 20

[SwitchB-Vlan-interface20] dhcp select server

[SwitchB-Vlan-interface20] quit

· 配置DHCP中继设备Switch A

# 创建VLAN接口和IP地址。

<SwitchA> system-view

[SwitchA] vlan 10

[SwitchA-vlan10] port gigabitEthernet 1/0/1

[SwitchA-vlan10] quit

[SwitchA] vlan 20

[SwitchA-vlan20] port gigabitEthernet 1/0/2

[SwitchA-vlan20] quit

[SwitchA] interface vlan-interface 10

[SwitchA-Vlan-interface10] ip address 10.10.1.1 255.255.255.0

[SwitchA-Vlan-interface10] quit

[SwitchA] interface vlan-interface 20

[SwitchA-Vlan-interface20] ip address 10.1.1.2 255.255.255.0

[SwitchA-Vlan-interface20] quit

# 开启DHCP服务。

[SwitchA] dhcp enable

# 配置VLAN接口10工作在DHCP中继模式。

[SwitchA] interface vlan-interface 10

[SwitchA-Vlan-interface10] dhcp select relay

# 配置DHCP服务器的地址。

[SwitchA-Vlan-interface10] dhcp relay server-address 10.1.1.1

2.4 验证配置

配置完成后，DHCP客户端可以通过DHCP中继从DHCP服务器获取IP地址及相关配置信息。

# 显示接口上指定的DHCP服务器地址信息。

[SwitchA] displsy dhcp relay server-address

Interface name Server IP address Public/VRF name Class name

Vlan10 10.1.1.1 Y/-- --

# 显示DHCP地址绑定信息。在显示信息里可以查看DHCP服务器为客户端分配的IP地址。

[SwitchB] display dhcp server ip-in-use

IP address Client-identifier/ Lease expiration Type

Hardware address

10.10.1.2 0036-3232-352e-3261- Feb 18 16:14:25 2023 Auto(C)

3264-2e30-3130-322d-

566c-616e-3130

# 显示DHCP中继的相关报文统计信息。

[SwitchB] display dhcp relay statistics

DHCP packets dropped: 0

Incorrect Message type: 0

Option Parsing failed: 0

Mac-check failed: 0

Other count: 0

DHCP packets received from clients: 2

DHCPDISCOVER: 1

DHCPREQUEST: 1

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets received from servers: 2

DHCPOFFER: 1

DHCPACK: 1

DHCPNAK: 0

BOOTPREPLY: 0

DHCP packets relayed to servers: 2

DHCPDISCOVER: 1

DHCPREQUEST: 1

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets relayed to clients: 2

DHCPOFFER: 1

DHCPACK: 1

DHCPNAK: 0

BOOTPREPLY: 0

DHCP packets sent to servers: 0

DHCPDISCOVER: 0

DHCPREQUEST: 0

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets sent to clients: 0

DHCPOFFER: 0

DHCPACK: 0

DHCPNAK: 0

BOOTPREPLY: 0

# 在用户视图下执行reset dhcp relay statistics命令，可以清除该统计信息。

[SwitchB] quit

<SwitchB> reset dhcp relay statistics

# 再次查看显示DHCP中继的相关报文统计信息。

[SwitchB] display dhcp relay statistics

DHCP packets dropped: 0

Incorrect Message type: 0

Option Parsing failed: 0

Mac-check failed: 0

Other count: 0

DHCP packets received from clients: 0

DHCPDISCOVER: 0

DHCPREQUEST: 0

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets received from servers: 0

DHCPOFFER: 0

DHCPACK: 0

DHCPNAK: 0

BOOTPREPLY: 0

DHCP packets relayed to servers: 0

DHCPDISCOVER: 0

DHCPREQUEST: 0

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets relayed to clients: 0

DHCPOFFER: 0

DHCPACK: 0

DHCPNAK: 0

BOOTPREPLY: 0

DHCP packets sent to servers: 0

DHCPDISCOVER: 0

DHCPREQUEST: 0

DHCPINFORM: 0

DHCPRELEASE: 0

DHCPDECLINE: 0

BOOTPREQUEST: 0

DHCP packets sent to clients: 0

DHCPOFFER: 0

DHCPACK: 0

DHCPNAK: 0

BOOTPREPLY: 0

2.5 配置文件

· 配置Switch B

dhcp enable

vlan 20

dhcp server ip-pool 5

gateway-list 10.10.1.1

network 10.10.1.0 mask 255.255.255.0

dns-list 10.10.1.100

interface Vlan-interface20

ip address 10.1.1.1 255.255.255.0

dhcp select server

interface GigabitEthernet1/0/1

port link-mode bridge

port access vlan 20

ip route-static 10.10.1.0 24 10.1.1.2

· 配置Switch A

dhcp enable

vlan 10

vlan 20

interface Vlan-interface10

ip address 10.10.1.1 255.255.255.0

dhcp select relay

dhcp relay server-address 10.1.1.1

interface Vlan-interface20

ip address 10.1.1.2 255.255.255.0

interface GigabitEthernet1/0/1

port link-mode bridge

port access vlan 10

interface GigabitEthernet1/0/2

port link-mode bridge

port access vlan 20

2.6 相关资料

· 产品配套“三层技术-IP业务配置指导”中的“DHCP”。

· 产品配套“三层技术-IP业务命令参考”中的“DHCP”。

3 配置DHCP Snooping

3.2 组网需求

如3.2 图3所示，Switch通过以太网端口GigabitEthernet1/0/1连接到合法DHCP服务器，通过以太网端口GigabitEthernet1/0/3连接到非法DHCP服务器，通过GigabitEthernet1/0/2连接到DHCP客户端。要求：

· 与合法DHCP服务器相连的端口可以转发DHCP服务器的响应报文，而其他端口不转发DHCP服务器的响应报文。

· 记录DHCP-REQUEST报文和信任端口收到的DHCP-ACK报文中DHCP客户端IP地址及MAC地址的绑定信息。

图3 DHCP Snooping配置组网图

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3.3 配置步骤

# 全局开启DHCP Snooping功能。

<Switch> system-view

[Switch] dhcp snooping enable

# 设置GigabitEthernet1/0/1端口为信任端口。

[Switch] interface gigabitethernet 1/0/1

[Switch-GigabitEthernet1/0/1] dhcp snooping trust

[Switch-GigabitEthernet1/0/1] quit

# 在GigabitEthernet1/0/2上开启DHCP Snooping表项功能。

[Switch] interface gigabitethernet 1/0/2

[Switch-GigabitEthernet1/0/2] dhcp snooping binding record

[Switch-GigabitEthernet1/0/2] quit

配置完成后，DHCP客户端只能从合法DHCP服务器获取IP地址和其它配置信息，非法DHCP服务器无法为DHCP客户端分配IP地址和其他配置信息。且使用display dhcp snooping binding可查询到获取到的DHCP Snooping表项。在用户视图下执行reset dhcp snooping binding命令，可以清除DHCP Snooping表项。

3.5 配置文件

dhcp snooping enable

interface GigabitEthernet1/0/1

port link-mode bridge

dhcp snooping trust

interface GigabitEthernet1/0/2

port link-mode bridge

dhcp snooping binding record

3.6 相关资料

· 产品配套“三层技术-IP业务配置指导”中的“DHCP”。

· 产品配套“三层技术-IP业务命令参考”中的“DHCP”。

4 配置DHCPv6服务器动态分配IPv6地址

4.1 简介

本案例介绍配置接口工作在DHCPv6服务器模式，实现动态分配IPv6地址的方法。

4.2 组网需求

如图4所示，交换机作为企业网络内部的网关设备。配置交换机接口工作在DHCPv6服务器模式，并配置地址/前缀分配方式，从而为主机Host A和Host B自动分配IPv6地址。不同网段的主机通过IPv6静态路由互相访问。

· Host A、Host B、Switch A和Switch B之间通过以太网端口相连，将以太网端口分别加入相应的VLAN里，在VLAN接口上配置IPv6地址，验证它们之间的互通性。

· 配置VLAN接口工作在DHCPv6服务器模式，并引用地址池，从而为主机自动分配IPv6地址。

· 在Switch A和Switch B上配置IPv6静态路由，实现各网段的互通。

图4 动态分配IPv6地址组网图

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4.3 配置步骤

1. 配置Switch A

# 创建VLAN，在VLAN中加入对应的端口。

<SwitchA> system-view

[SwitchA] vlan 3

[SwitchA-vlan3] port gigabitethernet 1/0/2

[SwitchA-vlan3] quit

[SwitchA] vlan 2

[SwitchA-vlan2] port gigabitethernet 1/0/1

[SwitchA-vlan2] quit

# 手工指定VLAN接口2的全球单播地址。

[SwitchA] interface vlan-interface 2

[SwitchA-Vlan-interface2] ipv6 address 3001::1/64

[SwitchA-Vlan-interface2] quit

# 手工指定VLAN接口3的全球单播地址，并允许其发布RA消息。

[SwitchA] interface vlan-interface 3

[SwitchA-Vlan-interface3] ipv6 address 2001::1/64

[SwitchA-Vlan-interface3] undo ipv6 nd ra halt

# 配置VLAN接口3引用DHCP地址池。

[SwitchA-Vlan-interface3] ipv6 dhcp server apply pool 1 allow-hint rapid-commit

# 配置被管理地址的配置标志位为1，即主机通过DHCPv6服务器获取IPv6地址。配置其他信息配置标志位为1，即主机通过DHCPv6服务器获取除IPv6地址以外的其他信息。

[SwitchA-Vlan-interface3] ipv6 nd autoconfig managed-address-flag

[SwitchA-Vlan-interface3] ipv6 nd autoconfig other-flag

# 配置接口VLAN接口3工作在DHCPv6服务器模式。

[SwitchA-Vlan-interface3] ipv6 dhcp select server

[SwitchA-Vlan-interface3] quit

# 配置DHCPv6地址池1。

[SwitchA] ipv6 dhcp pool 1

[SwitchA-dhcp6-pool-1] network 2001::/64

[SwitchA-dhcp6-pool-1] dns-server 1::1

[SwitchA-dhcp6-pool-1] quit

# 配置IPv6静态路由，该路由的目的地址为4001::/64，下一跳地址为3001::2。

[SwitchA] ipv6 route-static 4001:: 64 3001::2

# 保存配置。

[SwitchA] save force

2. 配置Switch B

# 创建VLAN，在VLAN中加入对应的端口。

<SwitchB> system-view

[SwitchB] vlan 2

[SwitchB-vlan2] port gigabitethernet 1/0/1

[SwitchB-vlan2] quit

[SwitchB] vlan 3

[SwitchB-vlan3] port gigabitethernet 1/0/2

[SwitchB-vlan3] quit

# 手工指定VLAN接口2的全球单播地址。

[SwitchB] interface vlan-interface 2

[SwitchB-Vlan-interface2] ipv6 address 3001::2/64

[SwitchB-Vlan-interface2] quit

# 手工指定VLAN接口3的全球单播地址，并允许其发布RA消息。

[SwitchB] interface vlan-interface 3

[SwitchB-Vlan-interface3] ipv6 address 4001::1/64

[SwitchB-Vlan-interface3] undo ipv6 nd ra halt

# 配置VLAN接口3引用DHCP地址池。

[SwitchB-Vlan-interface3] ipv6 dhcp server apply pool 1 allow-hint rapid-commit

[SwitchB-Vlan-interface3] ipv6 nd autoconfig managed-address-flag

[SwitchB-Vlan-interface3] ipv6 nd autoconfig other-flag

# 配置接口VLAN接口3工作在DHCPv6服务器模式。

[SwitchB-Vlan-interface3] ipv6 dhcp select server

[SwitchB-Vlan-interface3] quit

# 配置DHCPv6地址池1。

[SwitchB] ipv6 dhcp pool 1

[SwitchB-dhcp6-pool-1] network 4001::/64

[SwitchB-dhcp6-pool-1] dns-server 1::1

[SwitchB-dhcp6-pool-1] quit

# 配置IPv6静态路由，该路由的目的地址为2001::/64，下一跳地址为3001::1。

[SwitchB] ipv6 route-static 2001:: 64 3001::1

# 保存配置。

[SwitchB] save force

3. 配置Host A

在Host A上安装IPv6，并配置自动获取IPv6地址。

4. 配置Host B

在Host B上安装IPv6，并配置自动获取IPv6地址。

4.4 验证配置

1. 显示DHCPv6服务器的配置

# 显示DHCPv6地址池的信息。

[SwitchA] display ipv6 dhcp server ip-in-use

DHCPv6 pool: 1

Network: 2001::/64

Preferred lifetime 604800 seconds, valid lifetime 2592000 seconds

DNS server addresses:

1::1

IP-in-use threshold: 100

PD-in-use threshold: 100

# 显示接口上的DHCPv6服务器信息。

[SwitchA] displsy ipv6 dhcp server

Interface Pool

Vlan-interface1 1

2. 显示和清除DHCPv6服务器的地址绑定信息

# 在Switch A上查看DHCPv6服务器为客户端分配的IPv6地址。

[SwitchA] display ipv6 dhcp server ip-in-use

Pool: 1

IPv6 address Type Lease expiration

2001::2 Auto(C) Sep 30 11:45:07 2021

# 从Switch A上查看端口GigabitEthernet1/0/2的邻居信息。

[SwitchA] display ipv6 neighbors interface gigabitethernet 1/0/2

Type: S-Static D-Dynamic O-Openflow R-Rule IS-Invalid static

IPv6 address MAC address VLAN/VSI Interface State T Aging

2001::2 b025-0b54-0106 -- GE1/0/2 REACH D 29

FE80::B225:BFF:FE54:106 b025-0b54-0106 -- GE1/0/2 REACH D 18

通过上面的信息可以知道Host A上获得的IPv6全球单播地址为2001::2。

# 显示租约过期的DHCPv6地址绑定信息。

[SwitchA] display ipv6 dhcp server expired

IPv6 address DUID Lease expiration

2001::3 0262-9ead-ab03-00 Feb 17 17:09:02 2023

# 清除DHCPv6的正式地址绑定和临时地址绑定信息。并再次查看DHCPv6服务器为客户端分配的IPv6地址

[SwitchA] quit

<SwitchA> reset ipv6 dhcp server ip-in-use

<SwitchA> display ipv6 dhcp server ip-in-use

# 清除DHCPv6的正式地址绑定和临时地址绑定信息。并再次查看租约过期的DHCPv6地址绑定信息

<SwitchA> reset ipv6 dhcp server expired

<SwitchA> IPv6 address DUID Lease expiration

3. 显示和清除DHCPv6服务器的报文统计信息

# 显示DHCPv6服务器的报文统计信息。

<SwitchA> displsy ipv6 dhcp server statistics

Bindings:

Ip-in-use : 0

Pd-in-use : 0

Expired : 1

Conflict : 1

Packets received : 24

Solicit : 8

Request : 8

Confirm : 0

Renew : 0

Rebind : 0

Release : 8

Decline : 0

Information-request : 0

Relay-forward : 0

Packets dropped : 0

Packets sent : 24

Advertise : 8

Reconfigure : 0

Reply : 16

Relay-reply : 0

# 在用户视图下执行reset ipv6 dhcp server statistics命令，可以清除该统计信息。

<SwitchA> reset ipv6 dhcp server statistics

<SwitchA> display ipv6 dhcp server statistics

Bindings:

Ip-in-use : 0

Pd-in-use : 0

Expired : 1

Conflict : 1

Packets received : 0

Solicit : 0

Request : 0

Confirm : 0

Renew : 0

Rebind : 0

Release : 0

Decline : 0

Information-request : 0

Relay-forward : 0

Packets dropped : 0

Packets sent : 0

Advertise : 0

Reconfigure : 0

Reply : 0

Relay-reply : 0

# 在Switch B上查看DHCPv6服务器为客户端分配的IPv6地址

[SwitchB] display ipv6 dhcp server ip-in-use

Pool: 1

IPv6 address Type Lease expiration

4001::2 Auto(C) Sep 30 14:05:49 2021

# 从Switch B上查看端口GigabitEthernet1/0/2的邻居信息。

[SwitchB] display ipv6 neighbors interface gigabitethernet 1/0/2

Type: S-Static D-Dynamic O-Openflow R-Rule IS-Invalid static

IPv6 address MAC address VLAN/VSI Interface State T Aging

4001::2 b043-5415-0406 -- GE1/0/2 REACH D 3

FE80::B243:54FF:FE15:406 b043-5415-0406 -- GE1/0/2 REACH D 44

通过上面的信息可以知道Host B上获得的IPv6全球单播地址为4001::2。

从Host A上也可以ping通Host B，证明它们是互通的。

4.5 配置文件

· Switch A：

vlan 2 to 3

ipv6 dhcp pool 1

network 2001::/64

dns-server 1::1

interface Vlan-interface3

ipv6 dhcp select server

ipv6 dhcp server apply pool 1 allow-hint rapid-commit

ipv6 address 2001::1/64

ipv6 nd autoconfig managed-address-flag

ipv6 nd autoconfig other-flag

undo ipv6 nd ra halt

interface Vlan-interface2

ipv6 address 3001::1/64

interface GigabitEthernet1/0/1

port link-mode bridge

port access vlan 2

interface GigabitEthernet1/0/2

port link-mode bridge

port access vlan 3

ipv6 route-static 4001:: 64 3001::2

· Switch B ：

vlan 2 to 3

ipv6 dhcp pool 1

network 4001::/64

dns-server 1::1

interface Vlan-interface2

ipv6 address 3001::2/64

interface Vlan-interface3

ipv6 dhcp select server

ipv6 dhcp server apply pool 1 allow-hint rapid-commit

ipv6 address 4001::1/64

ipv6 nd autoconfig managed-address-flag

ipv6 nd autoconfig other-flag

undo ipv6 nd ra halt

interface GigabitEthernet1/0/1

port link-mode bridge

port access vlan 2

interface GigabitEthernet1/0/2

port link-mode bridge

port access vlan 3

ipv6 route-static 2001:: 64 3001::1

4.6 相关资料

· 产品配套“三层技术-IP业务配置指导”中的“DHCPv6”。

· 产品配套“三层技术-IP业务命令参考”中的“DHCPv6”

1 配置DHCP服务器动态分配IPv4地址

1. 显示DHCP服务器的配置

2. 显示DHCP服务器的IP地址分配信息

3. 清除DHCP服务器的IP地址分配信息

4. 显示和清除DHCP服务器的统计信息

2 配置DHCP中继

2.4 验证配置

2.5 配置文件

2.6 相关资料

4 配置DHCPv6服务器动态分配IPv6地址

1. 配置Switch A

2. 配置Switch B

3. 配置Host A

4. 配置Host B

1. 显示DHCPv6服务器的配置

2. 显示和清除DHCPv6服务器的地址绑定信息

3. 显示和清除DHCPv6服务器的报文统计信息

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