1) 在路由器 4(R4) 中
我已经配置了 2 个 dhcp 池。第一个 dhcp 池的 IP 地址为 150.10.10.0/24，第二个 dhcp 池在子接口 f0/0.1 和 f0/0.2 中使用 150.20.10.1/24，并在两个不同的 VLAN 10 和 20 中使用 (R4(config)#encapsulation dot1q 10) 进行封装
2) 在开关 1 中：
我有e0和e3的后备箱
3) 在开关 2 中：
我创建了 2 个 vlan（vlan 10 和 20）我在 vlan 10 中保留了 int e0 和 e1，e2 保留在 vlan 20 中，e3 是中继
所以我的问题是：
1> 如何从我的第一台 dhcp 服务器获取 R3 和 R2 ip 地址
2> 如何从我的第二个 dhcp 服务器获取 R1 ip 地址
但我没有收到任何客户的 IP 地址
R4配置：
upgrade fpd auto
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip icmp rate-limit unreachable
!
!
!
ip dhcp excluded-address 150.10.10.1
ip dhcp excluded-address 150.20.10.1
!
ip dhcp pool SERVER1
network 150.10.10.0 255.255.255.0
default-router 150.10.10.1
!
ip dhcp pool SERVER2
network 150.20.10.0 255.255.255.0
default-router 150.20.10.1
!
!
!
no ip domain lookup
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
redundancy
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex half
!
interface FastEthernet0/0.1
encapsulation dot1Q 10
ip address 150.10.10.1 255.255.255.0
!
interface FastEthernet0/0.2
encapsulation dot1Q 20
ip address 150.20.10.1 255.255.255.0
!
interface FastEthernet1/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet2/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet2/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet3/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet3/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet4/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet4/1
no ip address
shutdown
duplex auto
speed auto
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
no cdp log mismatch duplex
!
!
!
control-plane
!
!
!
mgcp profile default
!
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
stopbits 1
line vty 0 4
login
transport input all
!
!
end
开关 1 配置：
Using 1952 out of 262144 bytes, uncompressed size = 5025 bytes
!
! Last configuration change at 13:55:41 UTC Tue Sep 3 2019
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service compress-config
!
hostname ESW1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!
vtp domain CISCO-vIOS
vtp mode transparent
!
!
!
ip cef
no ipv6 cef
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 10
name VLAN100
!
vlan 10,20
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Ethernet0/0
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
!
interface Ethernet0/1
media-type rj45
negotiation auto
!
interface Ethernet0/2
media-type rj45
negotiation auto
!
interface Ethernet0/3
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
banner exec ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
banner incoming ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
banner login ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
!
line con 0
logging synchronous
line aux 0
line vty 0 4
logging synchronous
login
line vty 5 15
logging synchronous
login
!
!
end
开关 2 配置：
Using 1956 out of 262144 bytes, uncompressed size = 5048 bytes
!
! Last configuration change at 14:20:30 UTC Tue Sep 3 2019
!
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
service compress-config
!
hostname ESW2
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!
vtp domain CISCO-vIOS
vtp mode transparent
!
!
!
ip cef
no ipv6 cef
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 10
name VLAN10
!
vlan 10,20
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Ethernet0/0
switchport access vlan 10
media-type rj45
negotiation auto
!
interface Ethernet0/1
switchport access vlan 10
media-type rj45
negotiation auto
!
interface Ethernet0/2
switchport access vlan 20
media-type rj45
negotiation auto
!
interface Ethernet0/3
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
banner exec ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
banner incoming ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
banner login ^C
**************************************************************************
* IOSv - Cisco Systems Confidential *
* *
* This software is provided as is without warranty for internal *
* development and testing purposes only under the terms of the Cisco *
* Early Field Trial agreement. Under no circumstances may this software *
* be used for production purposes or deployed in a production *
* environment. *
* *
* By using the software, you agree to abide by the terms and conditions *
* of the Cisco Early Field Trial Agreement as well as the terms and *
* conditions of the Cisco End User License Agreement at *
* http://www.cisco.com/go/eula *
* *
* Unauthorized use or distribution of this software is expressly *
* Prohibited. *
**************************************************************************^C
!
line con 0
logging synchronous
line aux 0
line vty 0 4
logging synchronous
login
line vty 5 15
logging synchronous
login
!
!
end