Hello.
I have a cisco 881W. My ISP give me two subnet and gateway for them (Fa4 IP address in my configuration). There are three subnet in my company
- two subnets within real IP addresses (a.a.a.x and b.b.b.x in my configuration below)
- one subnet eithin private IP addresses (c.c.c.x in my configuration below)
And DHCP for each. I made configuration on my cisco 881:
WAN port was gateway
LAN ports was separate on thee VLANs
So port Fa0 was insert to VLAN1 (IP a.a.a.a), port Fa1 was insert to VLAN2 (IP b.b.b.b), port Fa2 was insert to VLAN3 (IP c.c.c.c)
Also I was creare three DHCP pools: pools for subnet a.a.a.a, b.b.b.b and c.c.c.c
But I have issue. When I connected any client into any ports from Fa0 to Fa2 it get rendom IP address from any three pools what I have. Another words if I connected client DHCP into port Fa0 I can will get not only address from pool for c.c.c.0 subnet but and for a.a.a.a subnet and for b.b.b.b subnet.
What me to do?
#sh run
Building configuration...
Current configuration : 3470 bytes
!
version 15.1
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
boot-start-marker
boot-end-marker
!
!
enable secret ----
!
no aaa new-model
memory-size iomem 10
crypto pki token default removal timeout 0
!
!
ip source-route
!
!
!
ip dhcp excluded-address c.c.c.1 c.c.c.100
!
ip dhcp pool pool
network c.c.c.0 255.255.255.0
default-router c.c.c.12
!
ip dhcp pool telephone
network a.a.a.208 255.255.255.248
default-router a.a.a.209
!
ip dhcp pool telephone1
network b.b.b.112 255.255.255.248
default-router b.b.b.113
!
interface FastEthernet0
switchport access vlan 1
no ip address
!
interface FastEthernet1
switchport access vlan 2
no ip address
!
interface FastEthernet2
switchport access vlan 3
no ip address
!
interface FastEthernet3
no ip address
!
interface FastEthernet4
ip address <IP address> 255.255.255.248
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
crypto map oldshcool
!
interface wlan-ap0
description Service module interface to manage the embedded AP
ip address 192.168.255.100 255.255.255.0
arp timeout 0
!
interface Wlan-GigabitEthernet0
description Internal switch interface connecting to the embedded AP
switchport mode trunk
no ip address
!
interface Vlan1
ip address c.c.c.12 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
interface Vlan2
ip address a.a.a.208 255.255.255.248
!
interface Vlan3
ip address b.b.b.112 255.255.255.248
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
ip nat inside source list 100 interface FastEthernet4 overload
ip route 0.0.0.0 0.0.0.0 <IP address>
!
logging esm config
access-list 100 permit ip c.c.c.0 0.0.0.255 any
!
end
