PC 1 在 VLAN 10 上

PC 2 位于 VLAN 20

路由器 1 位于 VLAN 30

SW 和 Router2 之间是中继，允许 vlan 10-30

我可以在 PC1 和 PC2 之间 ping，但我不能从路由器 1 ping 任何 PC。我应该添加额外的路由吗？

更新：

更简单的版本（仍然不起作用）

我有这样的拓扑：

这是我的配置：

转变

int fa0/1
sw mode access 
sw access vlan 10

int fa0/2
sw mode access
sw access vlan 20

int fa0/3
sw mode trunk
sw trunk allowed vlan 10-20

路由器 R_1 配置

int fa0/0.10
encapsulation dot1q
ip address 10.0.10.1 255.255.255.0

int fa0/0.20
encapsulation dot1q
ip address 10.0.20.1 255.255.255.0

电脑配置

ip : 10.0.10.100/24  default gateway : 10.0.10.1

路由器 R_2 上的配置

int fa0/0
ip address 10.0.20.100 255.255.255.0

R_2的路由配置

Gateway of last resort is not set

     10.0.0.0/24 is subnetted, 2 subnets
C       10.0.10.0 is directly connected, FastEthernet0/0.10
C       10.0.20.0 is directly connected, FastEthernet0/0.20

演出结束后：

Router#show run
Building configuration...

Current configuration : 719 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
!
interface FastEthernet0/0.10
 encapsulation dot1Q 10
 ip address 10.0.10.1 255.255.255.0
!
interface FastEthernet0/0.20
 encapsulation dot1Q 20
 ip address 10.0.20.1 255.255.255.0
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end

R_2的路由配置

Gateway of last resort is 10.0.20.1 to network 0.0.0.0

     10.0.0.0/24 is subnetted, 1 subnets
C       10.0.20.0 is directly connected, FastEthernet0/0
S*   0.0.0.0/0 [1/0] via 10.0.20.1

演出结束后：

Router#show run
Building configuration...

Current configuration : 596 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
 ip address 10.0.20.100 255.255.255.0
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.0.20.1 
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
 login
!
!
!
end