中小型网络思路规划设置分享(小型网络的规划与设计)

整体规划

采用三层网络结构，核心、汇聚三层互联，堆叠采用40G网络，汇聚10G，接入1G，网关下放到汇聚，交换机采用独立管理VLAN，模拟某工厂真实网络情况。

功能实现

1、核心、汇聚堆叠，动态端口聚合
2、配置DHCP服务器为多个VLAN服务
3、静态路由与OSPF配置
4、外网NAT访问实现
5、接入交换机Telnet、管理IP实现
6、SNMP网管服务部署
7、监控摄像头隔离
8、DHCP仿冒防御
9、端口隔离

配置详情

1、设置固定IP，配置主机名
如图片所示

2、核心堆叠，采用40G口堆叠
核心1

sys System View: return to User View with Ctrl+Z. [hexin1]int range FortyGigE 1/0/53 to FortyGigE 1/0/54 [hexin1-if-range]shu [hexin1-if-range]quit [hexin1]irf member 1 priority 32 [hexin1]irf-port 1/1 [hexin1-irf-port1/1]port group interface FortyGigE 1/0/53 [hexin1-irf-port1/1]port group interface FortyGigE 1/0/54 [hexin1-irf-port1/1]quit [hexin1]irf-port-configuration active [hexin1]int range FortyGigE 1/0/53 to FortyGigE 1/0/54 [hexin1-if-range]un sh [hexin1-if-range]save

核心2

[hexin2]sys [hexin2]irf member 1 renumber 2 Renumbering the member ID may result in configuration change or loss. Continue?[Y/N]:y [hexin2]quit reboot sys System View: return to User View with Ctrl+Z. [hexin2]interface range FortyGigE 2/0/53 to FortyGigE 2/0/54 [hexin2-if-range]shu [hexin2-if-range]quit [hexin2]irf member 2 priority 1 [hexin2]irf-port 2/2 [hexin2-irf-port2/2]port group interface FortyGigE 2/0/53 [hexin2-irf-port2/2]port group interface FortyGigE 2/0/54 [hexin2-irf-port2/2]qui [hexin2]irf-port-configuration active [hexin2]interface range FortyGigE 2/0/53 to FortyGigE 2/0/54 [hexin2-if-range]un sh [hexin2-if-range]quit [hexin2]save

连接堆叠线后，机器自动重启，此时两台交换机终端都会显示为 hexin1

3、车间汇聚堆叠，采用40G口
步骤与核心相同，堆叠后两台终端都会显示为 chejianhuiju1

4、按图片为交换机配置IP和VLAN，三层采用路由模式，汇聚下联trunk，接入上联trunk，下联对应vlan
车间汇聚做端口聚合

[chejianhuiju1]vlan 1004 [chejianhuiju1-vlan1004]int vlan 1004 [chejianhuiju1-Vlan-interface1004]ip add 10.0.4.254 24 [chejianhuiju1-Vlan-interface1004]quit [chejianhuiju1]int Bridge-Aggregation 1 [chejianhuiju1-Bridge-Aggregation1]link-aggregation mode dynamic [chejianhuiju1-Bridge-Aggregation1]quit [chejianhuiju1]int g1/0/1 [chejianhuiju1-GigabitEthernet1/0/1]port link-aggregation group 1 [chejianhuiju1-GigabitEthernet1/0/1]int g2/0/1 [chejianhuiju1-GigabitEthernet2/0/1]port link-aggregation group 1 [chejianhuiju1-GigabitEthernet2/0/1]dis link-aggregation verbose GE1/0/1 0 32768 0 0x8000, 0000-0000-0000 {EF} GE2/0/1 0 32768 0 0x8000, 0000-0000-0000 {EF} [chejianhuiju1-GigabitEthernet2/0/1]vlan 1004 [chejianhuiju1-vlan1004]port Bridge-Aggregation 1 [chejianhuiju1]int Bridge-Aggregation 1 [chejianhuiju1-Bridge-Aggregation1]port link-type trunk [chejianhuiju1-Bridge-Aggregation1]port trunk permit vlan all [chejianhuiju1-Bridge-Aggregation1]save

验证生产设备，ping 10.0.20.4 10.0.50.5 10.0.4.254 都通

5、配置OSPF，实现车间、办公、生产服务器、基础服务器互通

配置核心

sys System View: return to User View with Ctrl+Z. [hexin1]ospf [hexin1-ospf-1]area 0 [hexin1-ospf-1-area-0.0.0.0]netwo [hexin1-ospf-1-area-0.0.0.0]network 10.0.70.0 0.0.0.255 [hexin1-ospf-1-area-0.0.0.0]network 10.0.40.0 0.0.0.255 [hexin1-ospf-1-area-0.0.0.0]network 10.0.60.0 0.0.0.255 [hexin1-ospf-1-area-0.0.0.0]network 10.0.30.0 0.0.0.255 [hexin1-ospf-1-area-0.0.0.0]network 10.0.50.0 0.0.0.255 [hexin1-ospf-1-area-0.0.0.0]quit

配置车间汇聚

sys System View: return to User View with Ctrl+Z. [chejianhuiju1]ospf [chejianhuiju1-ospf-1]area 0 [chejianhuiju1-ospf-1-area-0.0.0.0]network 10.0.4.0 0.0.0.255 [chejianhuiju1-ospf-1-area-0.0.0.0]network 10.0.20.0 0.0.0.255 [chejianhuiju1-ospf-1-area-0.0.0.0]network 10.0.50.0 0.0.0.255 [chejianhuiju1-ospf-1-area-0.0.0.0]quit

生产设备ping核心通，其他配置类似。

6、配置DHCP服务器
使用三层交换机搭建DHCP服务器，ping测试

[H3C]hostname dhcp [dhcp]int g1/0/1 [dhcp-GigabitEthernet1/0/1]port link-mode route [dhcp-GigabitEthernet1/0/1]ip add 10.0.0.1 24 [dhcp-GigabitEthernet1/0/1]save [dhcp-GigabitEthernet1/0/1]quit [dhcp]ip route-static 0.0.0.0 0 10.0.0.254 [dhcp]ping 10.0.0.254 Ping 10.0.0.254 (10.0.0.254): 56 data bytes, press CTRL_C to break 56 bytes from 10.0.0.254: icmp_seq=0 ttl=255 time=0.000 ms

创建DHCP池

[dhcp]dhcp enable dhcp server ip-pool bangong gateway-list 10.0.3.254 network 10.0.3.0 mask 255.255.255.0 address range 10.0.3.100 10.0.3.200 dns-list 8.8.8.8 expired day 3 # dhcp server ip-pool wuxian gateway-list 10.0.2.254 network 10.0.2.0 mask 255.255.255.0 address range 10.0.2.150 10.0.2.200 dns-list 114.114.114.114 expired day 3 #

沿途汇聚、核心都要开启DHCP中继，二层只要有对应VLAN并trunk即可。

[jichuhuiju]dhcp enable # interface Vlan-interface1002 dhcp select relay dhcp relay server-address 10.0.0.1 # interface Vlan-interface1003 dhcp select relay dhcp relay server-address 10.0.0.1 #

查看客户端IP，成功获取IP

[dhcp]display dhcp server ip-in-use IP address Client identifier/ Lease expiration Type Hardware address 10.0.2.150 0038-6163-312e-3334- Jun 26 20:35:43 2021 Auto(C) 3266-2e31-3730-362d- 4745-302f-302f-31 10.0.3.100 0038-6137-362e-3466- Jun 28 20:35:31 2021 Auto(C) 3864-2e31-3230-362d- 4745-302f-302f-31

7、配置专线，仅办公和无线可以访问
办公汇聚、无线汇聚、核心、专线静态路由

[wuxianhuiju] ip route-static 10.1.0.0 24 10.0.60.10 [hexin1]ip route-static 10.1.0.0 24 10.0.90.18 [zhuanxianwangguan]ip route-static 10.0.2.0 24 10.0.90.15

测试办公和无线都可以访问专线IP10.1.0.2

8、配置办公和无线能访问外网，但外网无法直接访问内网
办公汇聚、无线汇聚、核心默认路由，外网网关静态路由

[bangonghuiju]ip route-static 0.0.0.0 0 10.0.30.6 [wuxianhuiju]ip route-static 0.0.0.0 0 10.0.60.10 [hexin1]ip route-static 0.0.0.0 0 10.0.10.1 [waibuwangguan]ip route-static 10.0.3.0 24 10.0.10.2 [waibuwangguan]ip route-static 10.0.2.0 24 10.0.10.2

配置最简单NAT访问方式Easy IP

[waibuwangguan]acl basic 200 [waibuwangguan-acl-ipv4-basic-2000]rule 0 permit source 10.0.2.0 0.0.0.255 [waibuwangguan-acl-ipv4-basic-2000]acl basic 2001 [waibuwangguan-acl-ipv4-basic-2001]rule 0 permit source 10.0.3.0 0.0.0.255 [waibuwangguan-acl-ipv4-basic-2001]quit [waibuwangguan]int g0/0 [waibuwangguan-GigabitEthernet0/0]nat outbound 2001 [waibuwangguan-GigabitEthernet0/0]nat outbound 2000

办公和无线ping外网1.1.1.2通，外网ping内网不通

9、POE供电
受模拟器限制无法实现，实际在无线接入执行 poe enable 即可

10、办公人员通过telnet远程管理车间接入交换机
车间汇聚创建管理vlan2000

[chejianhuiju1]vlan 2000 [chejianhuiju1-vlan2000]int vlan 2000 [chejianhuiju1-Vlan-interface2000]ip add 192.168.1.254 24

车间接入创建管理vlan，开启telnet服务，设置默认路由

sys System View: return to User View with Ctrl+Z. [chejianjieru]vlan 2000 [chejianjieru-vlan2000]int vlan 2000 [chejianjieru-Vlan-interface2000]ip add 192.168.1.2 24 [chejianjieru-Vlan-interface2000]quit [chejianjieru]user-interface vty 0 4 [chejianjieru-line-vty0-4]authentication-mode scheme [chejianjieru-line-vty0-4]quit [chejianjieru]local-user admin New local user added. [chejianjieru-luser-manage-admin]password simple 123456 [chejianjieru-luser-manage-admin]authorization-attribute user-role level-15 [chejianjieru-luser-manage-admin]service-type telnet [chejianjieru-luser-manage-admin]quit [chejianjieru]telnet server enable [chejianjieru]save [chejianjieru]ip route-static 0.0.0.0 0 192.168.1.254

核心添加静态路由

[hexin1]ip route-static 192.168.1.0 24 10.0.20.4

办公人员远程telnet

telnet 192.168.1.2 Trying 192.168.1.2 ... Press CTRL+K to abort Connected to 192.168.1.2 ... ****************************************************************************** * Copyright (c) 2004-2017 New H3C Technologies Co., Ltd. All rights reserved.* * Without the owner's prior written consent, * * no decompiling or reverse-engineering shall be allowed. * ****************************************************************************** login: admin Password:

11、配置snmp网络管理协议
配置向10.0.0.1发送设备信息

snmp-agent snmp-agent community write private snmp-agent community read public snmp-agent sys-info version all snmp-agent target-host trap address udp-domain 10.0.0.1 params securityname public v2c

12、配置监控网络，办公和无线可以访问监控服务器，不可访问摄像头，摄像头仅与监控服务器互相访问
核心设置静态路由，监控汇聚设置默认路由

[hexin1]ip route-static 10.0.5.0 24 10.0.80.17 [jiankonghuiju]ip route-static 0.0.0.0 0 10.0.80.16

在监控汇聚上联接口配置ACL规则，只允许访问10.0.5.1发出，其他禁止，从而达到只允许监控服务器被访问的目的

[jiankonghuiju]acl basic 2000 [jiankonghuiju-acl-ipv4-basic-2000]rule 0 permit source 10.0.5.1 0 [jiankonghuiju-acl-ipv4-basic-2000]rule 1 deny [jiankonghuiju-acl-ipv4-basic-2000]quit [jiankonghuiju]int Ten-GigabitEthernet1/0/49 [jiankonghuiju-Ten-GigabitEthernet1/0/49]packet-filter 2000 outbound

测试办公可以ping通10.0.5.1，不能ping通10.0.5.2

13、配置DHCP snooping，防止仿冒攻击
全局开启dhcp snooping，上联端口启用dhcp信任

[bangongjieru]dhcp snooping enable [bangongjieru]interface GigabitEthernet1/0/2 [bangongjieru]dhcp snooping trust

14、配置端口隔离，减少接入傻瓜交换机造成的网络风暴，防御ARP攻击

[H3C]port-isolate group 2 [H3C]int g1/0/1 [H3C-GigabitEthernet1/0/1]port-isolate enable group 2 [H3C-GigabitEthernet1/0/1]int g1/0/2 [H3C-GigabitEthernet1/0/2]port-isolate enable group 2 [H3C-GigabitEthernet1/0/2]quit [H3C]dis port-isolate group 2 Port isolation group information: Group ID: 2 Group members: GigabitEthernet1/0/1 GigabitEthernet1/0/2

总结

爽

关键词：中小型网络思路规划设置分享(小型网络的规划与设计)