思科：局域网之间的路由问题

网络工程 思科 路由 纳特 交换 ARP
2022-02-17 23:02:13

我们有一个项目要创建 3 个办公室，它们是 3 个不同的 LAN，其配置应如下所示：

  • 每个办公室应该有一台打印机，办公室可以打印
  • 他们应该能够在各个办公室打印

在此处输入图像描述

骨干：
Network: 10.0.0.0 Default gateway: 10.0.0.4 IP to internet/school backbone: DHCP (We get IP: 192.168.1.90) Router: Cisco 1711

Current configuration : 1668 bytes
!
! Last configuration change at 12:35:44 UTC Thu May 24 2018
! NVRAM config last updated at 11:41:24 UTC Thu May 24 2018
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname BackBone
!
boot-start-marker
boot system flash:c1700-advsecurityk9-mz.124-25a.bin
boot system slot1:c1700-advsecurityk9-mz.124-25a.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
no ip dhcp use vrf connected
ip dhcp excluded-address 10.0.0.5
ip dhcp excluded-address 10.0.0.6
!
ip dhcp pool bb1
   network 10.0.0.0 255.0.0.0
   dns-server 8.8.8.8 
   default-router 10.0.0.4 
!
!
!
!
!
!
!
!
! 
!
!
!
interface FastEthernet0
 ip address dhcp
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface Vlan1
 ip address 10.0.0.4 255.0.0.0
 ip nat inside
 ip virtual-reassembly
!
interface Async1
 no ip address
 encapsulation slip
!
router rip
 network 10.0.0.0
 network 192.168.4.0
 neighbor 10.0.0.4
 neighbor 10.0.0.3
 neighbor 10.0.0.2
 neighbor 10.0.0.1
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 FastEthernet0 192.168.1.1
ip route 192.168.1.0 255.255.255.0 10.0.0.1
ip route 192.168.2.0 255.255.255.0 10.0.0.2
ip route 192.168.3.0 255.255.255.0 10.0.0.3
!
no ip http server
no ip http secure-server
ip nat inside source list 1 interface FastEthernet0 overload
!
access-list 1 permit any
!
control-plane
!
!
line con 0
line 1
 stopbits 1
 speed 115200
 flowcontrol hardware
line aux 0
line vty 0 4
 login
!
end

办公室1：
Backbone IP: 10.0.0.1 LAN network : 192.168.1.0 Office Printer IP: 192.168.1.2 Should be able to print on: Office 3 Router: Cisco 1811

Current configuration : 2015 bytes
!
! Last configuration change at 11:30:02 UTC Thu May 24 2018
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
crypto pki token default removal timeout 0
!
!
dot11 syslog
ip source-route
!         
!
ip dhcp excluded-address 192.168.1.2
ip dhcp excluded-address 192.168.1.254
!
ip dhcp pool p1
 import all
 network 192.168.1.0 255.255.255.0
 default-router 192.168.1.1 
 dns-server 8.8.8.8 
!
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
license udi pid CISCO1811/K9 sn FHK113611TH
!
!
!         
!
!
!
!
!
!
interface FastEthernet0
 ip address 10.0.0.1 255.0.0.0
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface FastEthernet1
 ip address 192.168.1.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface FastEthernet2
 no ip address
!         
interface FastEthernet3
 no ip address
!
interface FastEthernet4
 no ip address
!
interface FastEthernet5
 no ip address
!
interface FastEthernet6
 no ip address
!
interface FastEthernet7
 no ip address
!
interface FastEthernet8
 no ip address
!
interface FastEthernet9
 no ip address
!
interface Vlan1
 ip address dhcp
 ip nat inside
 ip virtual-reassembly in
!
interface Async1
 no ip address
 encapsulation slip
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface FastEthernet0 overload
ip route 0.0.0.0 0.0.0.0 FastEthernet0 10.0.0.4
ip route 10.0.0.0 255.255.255.0 10.0.0.4
ip route 10.0.0.4 255.255.255.255 10.0.0.4
ip route 10.0.0.13 255.255.255.255 10.0.0.13
ip route 192.168.2.0 255.255.255.0 10.0.0.2
ip route 192.168.3.0 255.255.255.0 10.0.0.3
ip route 192.168.3.2 255.255.255.255 10.0.0.3
!
access-list 1 permit any
!         
!
!
!
!
!
control-plane
!
!
!
line con 0
line 1
 modem InOut
 stopbits 1
 speed 115200
 flowcontrol hardware
line aux 0
line vty 0 4
 login
 transport input all
!
end

办公室 2：
Backbone IP: 10.0.0.2 LAN network : 192.168.2.0 Office Printer IP: 192.168.2.2 Should be able to print on: Office 1 Router: Cisco 1803

Current configuration : 1715 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
!
!
dot11 syslog
ip source-route
!
!
ip dhcp excluded-address 192.168.2.2
ip dhcp excluded-address 192.168.2.254
!
ip dhcp pool p1
   import all
   network 192.168.2.0 255.255.255.0
   dns-server 8.8.8.8 
   default-router 192.168.2.1 
!
!
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
vtp mode transparent
! 
!
!
archive
 log config
 hidekeys
!         
!
controller DSL 0
!
vlan 3 
!
vlan 4
name X-net
!
vlan 6
name Y-net
!
vlan 7
name Z-net
!
vlan 9
name BIP27591
!
vlan 10 
!
!
!
!
interface BRI0
no ip address
encapsulation hdlc
shutdown
!
interface FastEthernet0
ip address 10.0.0.2 255.255.255.0
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface FastEthernet5
!
interface FastEthernet6
!         
interface FastEthernet7
!
interface FastEthernet8
!
interface Vlan1
 ip address 192.168.2.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
router rip
 network 192.168.2.0
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 FastEthernet0 10.0.0.4
ip route 192.168.1.0 255.255.255.0 10.0.0.1
ip route 192.168.1.2 255.255.255.255 10.0.0.1
ip route 192.168.3.0 255.255.255.0 10.0.0.3
ip route 192.168.3.1 255.255.255.255 10.0.0.3
no ip http server
no ip http secure-server
!
!
ip nat inside source list 1 interface FastEthernet0 overload
!
access-list 1 permit any
!
!
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
 login
!
end

办公室 3：
Backbone IP: 10.0.0.3 LAN network : 192.168.3.0 Office Printer IP: 192.168.3.2 Should be able to print on: Office 2 Router: Cisco 1711

Current configuration : 1246 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Office3
!
boot-start-marker
boot system flash:c1700-advsecurityk9-mz.124-13b.bin
boot system slot1:c1700-advsecurityk9-mz.124-13b.bin
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.3.2
!
ip dhcp pool office3
   import all
   network 192.168.3.0 255.255.255.0
   default-router 192.168.3.1
   dns-server 8.8.8.8
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0
 ip address 10.0.0.3 255.0.0.0
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface Vlan1
 ip address 192.168.3.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
interface Async1
 no ip address
 encapsulation slip
!
router rip
 network 192.168.3.0
!
ip route 0.0.0.0 0.0.0.0 FastEthernet0 10.0.0.4
!
no ip http server
no ip http secure-server
ip nat inside source list 1 interface FastEthernet0 overload
!
access-list 1 permit any
!
control-plane
!
!
line con 0
line 1
 stopbits 1
 speed 115200
 flowcontrol hardware
line aux 0
line vty 0 4
 login
!
end

此配置在此处直观显示：https ://imgur.com/a/rPHE92A 此网络在 Cisco Packet Tracer 中 100% 工作。

问题：

我们无法从 LAN ping 远程主机。例如：如果我们在 Office 1 主机上并且想要 PING Office 3 打印机（192.168.3.2），我们会得到超时 - 主机不可用。

从 Office 1 上的主机我们可以 ping：

192.168.1.2（我们的打印机）10.0.0.4（骨干路由器）10.0.0.3（Office 3网络）

我们只是无法通过远程路由器到达远程打印机，或者响应没有从远程路由器返回给我们。（这条路线不起作用：192.168.1.4 -> 192.168.3.2）

我们感谢任何帮助！:)

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