大家好，我在从 VLAN 3 获取 VPC 以与 Vlan 3 上的 DHCP 通信时遇到问题我也尝试在路由器上配置 IP 助手，但无济于事。
路由器配置转储
Router#sh run
Building configuration...
Current configuration : 947 bytes
!
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
!
!
no ip domain lookup
no ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex full
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 192.168.2.1 255.255.255.0
ip helper-address 192.168.2.2
!
interface FastEthernet0/0.3
encapsulation dot1Q 3
ip address 192.168.3.1 255.255.255.0
ip helper-address 192.168.2.2
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
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
!
!
end
Router#
主开关配置转储
MainSwitch#sh run
Building configuration...
Current configuration : 1674 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname MainSwitch
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet1/0
switchport mode trunk
!
interface FastEthernet1/1
switchport mode trunk
!
interface FastEthernet1/2
switchport mode trunk
!
interface FastEthernet1/3
!
interface FastEthernet1/4
!
interface FastEthernet1/5
!
interface FastEthernet1/6
!
interface FastEthernet1/7
!
interface FastEthernet1/8
!
interface FastEthernet1/9
!
interface FastEthernet1/10
!
interface FastEthernet1/11
!
interface FastEthernet1/12
!
interface FastEthernet1/13
!
interface FastEthernet1/14
!
interface FastEthernet1/15
!
interface Vlan1
no ip address
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.2.1
ip route 0.0.0.0 0.0.0.0 192.168.3.1
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end
MainSwitch#
SW-Clients 配置转储
SW-Clients#sh run
Building configuration...
Current configuration : 1944 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SW-Clients
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet1/0
switchport mode trunk
!
interface FastEthernet1/1
switchport access vlan 3
!
interface FastEthernet1/2
switchport access vlan 3
!
interface FastEthernet1/3
switchport access vlan 3
!
interface FastEthernet1/4
switchport access vlan 3
!
interface FastEthernet1/5
switchport access vlan 3
!
interface FastEthernet1/6
switchport access vlan 3
!
interface FastEthernet1/7
switchport access vlan 3
!
interface FastEthernet1/8
switchport access vlan 3
!
interface FastEthernet1/9
switchport access vlan 3
!
interface FastEthernet1/10
switchport access vlan 3
!
interface FastEthernet1/11
switchport access vlan 3
!
interface FastEthernet1/12
switchport access vlan 3
!
interface FastEthernet1/13
switchport access vlan 3
!
interface FastEthernet1/14
switchport access vlan 3
!
interface FastEthernet1/15
switchport access vlan 3
!
interface Vlan1
no ip address
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end
SW-Clients#
SW-IT 配置转储
SW-IT#sh run
Building configuration...
Current configuration : 1939 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SW-IT
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
no ip icmp rate-limit unreachable
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet1/0
switchport mode trunk
!
interface FastEthernet1/1
switchport access vlan 2
!
interface FastEthernet1/2
switchport access vlan 2
!
interface FastEthernet1/3
switchport access vlan 2
!
interface FastEthernet1/4
switchport access vlan 2
!
interface FastEthernet1/5
switchport access vlan 2
!
interface FastEthernet1/6
switchport access vlan 2
!
interface FastEthernet1/7
switchport access vlan 2
!
interface FastEthernet1/8
switchport access vlan 2
!
interface FastEthernet1/9
switchport access vlan 2
!
interface FastEthernet1/10
switchport access vlan 2
!
interface FastEthernet1/11
switchport access vlan 2
!
interface FastEthernet1/12
switchport access vlan 2
!
interface FastEthernet1/13
switchport access vlan 2
!
interface FastEthernet1/14
switchport access vlan 2
!
interface FastEthernet1/15
switchport access vlan 2
!
interface Vlan1
no ip address
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
exec-timeout 0 0
privilege level 15
logging synchronous
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
login
!
!
end
SW-IT#
有没有人知道我做错了什么？
我对网络很陌生
感谢您提前帮助我。
编辑 2： 为了澄清，我将在这里转储所有 vlan 和 VTP 配置
主交换机 VLAN 和 VTP 转储
MainSwitch#sh vlan-switch
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa1/3, Fa1/4, Fa1/5, Fa1/6
Fa1/7, Fa1/8, Fa1/9, Fa1/10
Fa1/11, Fa1/12, Fa1/13, Fa1/14
Fa1/15
2 IT active
3 Clients active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 1002 1003
2 enet 100002 1500 - - - - - 0 0
3 enet 100003 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 1 1003
1003 tr 101003 1500 1005 0 - - srb 1 1002
1004 fdnet 101004 1500 - - 1 ibm - 0 0
1005 trnet 101005 1500 - - 1 ibm - 0 0
MainSwitch#sh vtp status
VTP Version : 2
Configuration Revision : 2
Maximum VLANs supported locally : 36
Number of existing VLANs : 7
VTP Operating Mode : Server
VTP Domain Name : NSFW
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x0C 0xA9 0xB5 0xF6 0x72 0xC4 0xEF 0x3C
Configuration last modified by 0.0.0.0 at 3-1-02 00:04:54
Local updater ID is 0.0.0.0 (no valid interface found)
MainSwitch#
SW-Clients VLAN 和 VTP 配置\
SW-Clients#sh vlan-switch
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active
2 IT active
3 Clients active Fa1/1, Fa1/2, Fa1/3, Fa1/4
Fa1/5, Fa1/6, Fa1/7, Fa1/8
Fa1/9, Fa1/10, Fa1/11, Fa1/12
Fa1/13, Fa1/14, Fa1/15
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 1002 1003
2 enet 100002 1500 - - - - - 0 0
3 enet 100003 1500 - - - - - 0 0
1002 fddi 101002 1500 - 0 - - - 1 1003
1003 tr 101003 1500 1005 0 - - srb 1 1002
1004 fdnet 101004 1500 - - 1 ibm - 0 0
1005 trnet 101005 1500 - - 1 ibm - 0 0
SW-Clients#sh vtp status
VTP Version : 2
Configuration Revision : 2
Maximum VLANs supported locally : 36
Number of existing VLANs : 7
VTP Operating Mode : Server
VTP Domain Name : NSFW
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x0C 0xA9 0xB5 0xF6 0x72 0xC4 0xEF 0x3C
Configuration last modified by 0.0.0.0 at 3-1-02 00:04:54
Local updater ID is 0.0.0.0 (no valid interface found)
SW-Clients#
SW-IT VLAN 和 VTP 配置
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active
2 IT active Fa1/1, Fa1/2, Fa1/3, Fa1/4
Fa1/5, Fa1/6, Fa1/7, Fa1/8
Fa1/9, Fa1/10, Fa1/11, Fa1/12
Fa1/13, Fa1/14, Fa1/15
3 Clients active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 1002 1003
2 enet 100002 1500 - - - - - 0 0
3 enet 100003 1500 - - - - - 0 0
1002 fddi 101002 1500 - 0 - - - 1 1003
1003 tr 101003 1500 1005 0 - - srb 1 1002
1004 fdnet 101004 1500 - - 1 ibm - 0 0
1005 trnet 101005 1500 - - 1 ibm - 0 0
SW-IT#sh vtp status
VTP Version : 2
Configuration Revision : 2
Maximum VLANs supported locally : 36
Number of existing VLANs : 7
VTP Operating Mode : Server
VTP Domain Name : NSFW
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x0C 0xA9 0xB5 0xF6 0x72 0xC4 0xEF 0x3C
Configuration last modified by 0.0.0.0 at 3-1-02 00:04:54
Local updater ID is 0.0.0.0 (no valid interface found)
编辑 3：DHCP 服务器转储
根据要求，转储 IOS 路由器伪装成 DHCP 服务器
DHCP 服务器配置转储
DHCP-SERVER#sh run
Building configuration...
Current configuration : 1061 bytes
!
! Last configuration change at 14:42:48 UTC Sun Jun 3 2018
!
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname DHCP-SERVER
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
no ip icmp rate-limit unreachable
ip cef
!
!
!
ip dhcp excluded-address 192.168.2.1 192.168.2.10
ip dhcp excluded-address 192.168.3.1 192.168.3.10
!
ip dhcp pool IT
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
!
ip dhcp pool Clients
network 192.168.3.0 255.255.255.0
default-router 192.168.3.1
!
!
!
no ip domain lookup
no ipv6 cef
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
ip tcp synwait-time 5
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.2.2 255.255.255.0
duplex full
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
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
!
!
end
DHCP-SERVER#