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DHCP and VLAN

ottobrerosso
Level 1
Level 1

Hi all,
I'm trying to configure different DHCP pool on a Cisco 1841 router connected to a Cisco Catalyst 3750 switch, but DHCP seems to doesn't works...
I've created three VLAN on the switch 7-14-21 and three subinterface for FastEthernet 0/0 on router each with encapsulation dot1q referring to each  vlan, so Fa0/0.7 Fa0/0.14 Fa0/0.21 and set default router to each subinterface according to DHCP pool, but device connected to the switch don't receive IP addresses.Does anyone could help me to check this issue ? Here the configuration:

R1841#sh running-config
Building configuration...

Current configuration : 3612 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1841
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$YL73$DZPkNN4SsF3C.4PzBmXU1/
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.96.8.246
ip dhcp excluded-address 10.96.8.245
ip dhcp excluded-address 10.136.12.250
ip dhcp excluded-address 10.136.12.249
ip dhcp excluded-address 10.135.100.190
ip dhcp excluded-address 10.135.100.189
!
ip dhcp pool LAN
network 10.96.8.0 255.255.255.248
default-router 10.96.8.246
dns-server 8.8.8.8 8.8.4.4
lease 0 8
!
ip dhcp pool Static-Wifi
host 10.135.100.1 255.255.255.192
client-identifier 01d4.c9ef.54d7.4b
dns-server 8.8.8.8 8.8.4.4
default-router 10.135.100.190
!
ip dhcp pool WiFi
network 10.135.100.0 255.255.255.192
dns-server 8.8.8.8 8.8.4.4
default-router 10.135.100.190
lease 0 1
!
ip dhcp pool Static-LAN
host 10.96.8.1 255.255.255.248
client-identifier 0178.24af.889c.a8
dns-server 8.8.8.8 8.8.4.4
default-router 10.96.8.246
!
ip dhcp pool VLan1
network 10.10.10.0 255.255.255.0
default-router 10.96.8.246
dns-server 8.8.8.8 8.8.4.4
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
vpdn enable
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1410
no ip mroute-cache
speed 100
full-duplex
no cdp enable
!
interface FastEthernet0/0.7
description Default Gateway Vlan 7 - LAN / Nat Inside
encapsulation dot1Q 7
ip address 10.96.8.246 255.255.255.248
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1410
no ip mroute-cache
!
interface FastEthernet0/0.14
description Default Gateway Vlan 14 - NAS / No Nat Inside
encapsulation dot1Q 14
ip address 10.136.12.250 255.255.255.252
!
interface FastEthernet0/0.21
description Sub-interface Default Gateway Vlan 21 - WiFi / Nat Inside
encapsulation dot1Q 21
ip address 10.135.100.190 255.255.255.192
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1410
no ip mroute-cache
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1/0
duplex full
speed 100
!
interface FastEthernet0/1/1
duplex full
speed 100
!
interface FastEthernet0/1/2
duplex full
speed 100
!
interface FastEthernet0/1/3
description Trunk per Access Point WiFi
switchport mode trunk
duplex full
speed 100
!
interface ATM0/0/0
no ip address
no ip route-cache cef
no ip route-cache
no ip mroute-cache
atm restart timer 300
no atm ilmi-keepalive
atm pppatm link reset
bundle-enable
dsl operating-mode auto
hold-queue 224 in
!
interface ATM0/0/0.1 point-to-point
no ip route-cache
pvc 8/35
pppoe-client dial-pool-number 1
!
!
interface Vlan1
description Interface VLAN1
ip address 10.10.10.10 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1410
no ip mroute-cache
!
interface Dialer0
ip address negotiated
no ip proxy-arp
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp pap sent-username User password 0 password
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
ip http server
no ip http secure-server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 permit 10.0.0.0 0.255.255.255
dialer-list 1 protocol ip permit
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line vty 0
password pwd
login
line vty 1 4
login
!
scheduler allocate 20000 1000
end


Configurazione Switch 3750:

Switch#sh running-config
Building configuration...

Current configuration : 3180 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
no service dhcp
!
hostname Switch
!
!
no aaa new-model
switch 1 provision ws-c3750-24p
ip subnet-zero
!
!
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
interface FastEthernet1/0/1
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/2
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/3
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/4
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/5
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/6
switchport access vlan 7
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/7
switchport access vlan 7
duplex full
speed 100
!
interface FastEthernet1/0/8
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/9
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/10
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/11
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/12
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/13
switchport access vlan 14
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/14
switchport access vlan 14
duplex full
speed 100
!
interface FastEthernet1/0/15
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/16
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/17
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/18
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/19
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/20
switchport access vlan 21
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/21
switchport access vlan 21
duplex full
speed 100
!
interface FastEthernet1/0/22
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/23
shutdown
duplex full
speed 100
!
interface FastEthernet1/0/24
description Trunk
switchport trunk encapsulation dot1q
switchport mode trunk
duplex full
speed 100
!
interface GigabitEthernet1/0/1
shutdown
!
interface GigabitEthernet1/0/2
shutdown
!
interface Vlan1
no ip address
!
interface Vlan7
description Interface Vlan 7 - Management Vlan LAN
ip address 10.96.8.245 255.255.255.248
!
interface Vlan14
description Interface Vlan 14 - Management Vlan NAS
ip address 10.136.12.49 255.255.255.252
!
interface Vlan21
description Interface Vlan 21 - Management WiFi
ip address 10.135.100.189 255.255.255.192
!
ip default-gateway 10.96.8.246
ip classless
ip http server
ip http secure-server
!
!
!
!
!
control-plane
!
!
line con 0
line vty 0
password pwd
login local
line vty 1 4
no login
line vty 5 15
no login
!
!
end

Switch#

Thanks!

1 Accepted Solution

Accepted Solutions

Your LAN DHCP pool is misconfigured.

Change this -

"network 10.96.8.0 255.255.255.248"

to -

"network 10.96.8.240 255.255.255.248"

Jon

View solution in original post

11 Replies 11

Mark Malone
VIP Alumni
VIP Alumni

Hi

There is no requirement for layer 3 vlans on a layer 2 switch , only 1 svi is required for mgmt. purposes and reachability

on your switch turn on dhcp

no service dhcp

service dhcp

Hi,
so I've to remove interface for Vlan 7-14-21 and set only Vlan 1 and to start DHCP service on 3750 switch, right ?
Thanks

Hey It shouldn't be a requirement but its best practice to only have a mgmt. vlan on your layer 2 switch not multiple layer 3 ints  , your telling switch my default gateway is 10.96.8.246 but then there is a closer layer 3 ip on its switch configured in same subnet , dhcp being turned off could be causing it as well

Just trying to fix what I see wrong at first look and then if problem is still there after can look deeper and what might be the cause

vlan 1 should be a sub interface like the other as well to keep it consistent as well f0/0.1  

good guide for your design

http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/336-cisco-router-8021q-router-stick.html

You could test the fix on this easy enough by shutting vlan 7 on the switch only it will not effect traffic for that subnet then turn on dhcp and connect a device up see then if you get the ip address

HI,
issue is still there... -.-''
Here the new configuration:

Router 1841:


R1841#
R1841#sh run
R1841#sh running-config
Building configuration...
Current configuration : 3812 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1841
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$YL73$DZPkNN4SsF3C.4PzBmXU1/
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.96.8.246
ip dhcp excluded-address 10.96.8.245
ip dhcp excluded-address 10.136.12.250
ip dhcp excluded-address 10.136.12.249
ip dhcp excluded-address 10.135.100.190
ip dhcp excluded-address 10.135.100.189
ip dhcp excluded-address 10.10.11.254
!
ip dhcp pool LAN
   network 10.96.8.0 255.255.255.248
   default-router 10.96.8.246
   dns-server 8.8.8.8 8.8.4.4
   lease 0 8
!
ip dhcp pool Static-Wifi
   host 10.135.100.1 255.255.255.192
   client-identifier 01d4.c9ef.54d7.4b
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.135.100.190
!
ip dhcp pool WiFi
   network 10.135.100.0 255.255.255.192
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.135.100.190
   lease 0 1
!
ip dhcp pool Static-LAN
   host 10.96.8.1 255.255.255.248
   client-identifier 0178.24af.889c.a8
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.96.8.246
!
ip dhcp pool WiFi-Vlan1
   network 10.10.11.0 255.255.255.0
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.10.11.254
   lease 0 3
!
ip dhcp pool VLan1
   network 10.10.10.0 255.255.255.0
   default-router 10.96.8.246
   dns-server 8.8.8.8 8.8.4.4
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
vpdn enable
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
 ip address 10.10.11.254 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
 speed 100
 full-duplex
 no cdp enable
!
interface FastEthernet0/0.7
 description Default Gateway Vlan 7 - LAN / Nat Inside
 encapsulation dot1Q 7
 ip address 10.96.8.246 255.255.255.248
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface FastEthernet0/0.14
 description Default Gateway Vlan 14 - NAS / No Nat Inside
 encapsulation dot1Q 14
 ip address 10.136.12.250 255.255.255.252
!
interface FastEthernet0/0.21
 description Sub-interface Default Gateway Vlan 21 - WiFi / Nat Inside
 encapsulation dot1Q 21
 ip address 10.135.100.190 255.255.255.192
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet0/1/0
 duplex full
 speed 100
!
interface FastEthernet0/1/1
 duplex full
 speed 100
!
interface FastEthernet0/1/2
 duplex full
 speed 100
!
interface FastEthernet0/1/3
 description Trunk per Access Point WiFi
 switchport mode trunk
 duplex full
 speed 100
!
interface ATM0/0/0
 no ip address
 no ip route-cache cef
 no ip route-cache
 no ip mroute-cache
 atm restart timer 300
 no atm ilmi-keepalive
 atm pppatm link reset
 bundle-enable
 dsl operating-mode auto
 hold-queue 224 in
!
interface ATM0/0/0.1 point-to-point
 no ip route-cache
 pvc 8/35
  pppoe-client dial-pool-number 1
 !
!
interface Vlan1
 description Interface VLAN1
 ip address 10.10.10.10 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface Dialer0
 ip address negotiated
 no ip proxy-arp
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication pap callin
 ppp pap sent-username username password 0 password
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
ip http server
no ip http secure-server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 permit 10.0.0.0 0.255.255.255
dialer-list 1 protocol ip permit
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line vty 0
 password Cisco
 login
line vty 1 4
 login
!
scheduler allocate 20000 1000
end
R1841#
Switch 3750:

Switch#sh run
Switch#sh running-config
Building configuration...
Current configuration : 2902 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
!
no aaa new-model
switch 1 provision ws-c3750-24p
ip subnet-zero
!
!
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
interface FastEthernet1/0/1
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/2
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/3
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/4
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/5
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/6
 switchport access vlan 7
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/7
 switchport access vlan 7
 duplex full
 speed 100
!
interface FastEthernet1/0/8
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/9
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/10
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/11
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/12
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/13
 switchport access vlan 14
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/14
 switchport access vlan 14
 duplex full
 speed 100
!
interface FastEthernet1/0/15
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/16
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/17
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/18
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/19
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/20
 switchport access vlan 21
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/21
 switchport access vlan 21
 duplex full
 speed 100
!
interface FastEthernet1/0/22
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/23
 shutdown
 duplex full
 speed 100
!
interface FastEthernet1/0/24
 description Trunk
 switchport trunk encapsulation dot1q
 switchport mode trunk
 duplex full
 speed 100
!
interface GigabitEthernet1/0/1
 shutdown
!
interface GigabitEthernet1/0/2
 shutdown
!
interface Vlan1
 description Management Interface for VLAN 1
 ip address 10.10.11.253 255.255.255.0
!
ip default-gateway 10.10.11.254
ip classless
ip http server
ip http secure-server
!
!
!
!
!
control-plane
!
!
line con 0
line vty 0 1
 password pwd
 login local
line vty 2 4
 no login
line vty 5 15
 no login
!
!
end
Switch#
Here a show version of the Switch:
Switch#    show version
Cisco IOS Software, C3750 Software (C3750-ADVIPSERVICESK9-M), Version 12.2(25)SEA, RELEASE SOFTWARE (fc)
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Wed 26-Jan-05 00:09 by antonino
ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(19r)EA1b, RELEASE SOFTWARE (fc2)
 Switch uptime is 1 hour, 38 minutes
System returned to ROM by power-on
System image file is "flash:/c3750-advipservicesk9-mz.122-25.SEA.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
export@cisco.com.
cisco WS-C3750-24P (PowerPC405) processor (revision C0) with 118784K/12280K bytes of memory.
Processor board ID CAT0839N14C
Last reset from power-on
1 Virtual Ethernet interface
24 FastEthernet interfaces
2 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address       : 00:12:43:28:C1:80
Motherboard assembly number     : 73-8312-04
Power supply part number        : 341-0029-03
Motherboard serial number       : CAT083906A0
Power supply serial number      : DTH08352UGM
Model revision number           : C0
Motherboard revision number     : B0
Model number                    : WS-C3750-24PS-S
System serial number            : CAT0839N14C
Top Assembly Part Number        : 800-21982-01
Top Assembly Revision Number    : F0
Version ID                      : N/A
Hardware Board Revision Number  : 0x09

Switch   Ports  Model              SW Version              SW Image
------   -----  -----              ----------              ----------
*    1   26     WS-C3750-24P       12.2(25)SEA             C3750-ADVIPSERVICESK

Configuration register is 0xF
Switch#
If I try to connect my pc to switch FA1/0/7 I'm not able to have an IP address from Router subinterface FA0/0.7

From the switch -

"sh int trunk" 

and I assume you have connected fa01/0/24 to fa0/0 on the router ?

Jon

Hi,
yes FA1/0/24 is connected to Fa0/0
Here command output:

Switch#sh int trunk
Port        Mode         Encapsulation  Status        Native vlan
Fa1/0/24    on           802.1q         trunking      1
Port      Vlans allowed on trunk
Fa1/0/24    1-4094
Port        Vlans allowed and active in management domain
Fa1/0/24    1,7,14,21
Port        Vlans in spanning tree forwarding state and not pruned
Fa1/0/24    1,7,14,21
Switch#

Your LAN DHCP pool is misconfigured.

Change this -

"network 10.96.8.0 255.255.255.248"

to -

"network 10.96.8.240 255.255.255.248"

Jon

Hi,
I've change network to 10.96.8.240 255.255.255.248 and nothing changed
I've tried to set network 10.96.8.0 255.255.255.0 and it works fine.
But checking network originally set 10.96.8.0 255.255.255.248 first address should be 10.96.8.1 last 10.96.8.6

http://mxtoolbox.com/subnet/?filter=10.96.8.0/29&source=subnettool

why it doesn't works ?

Other question after changed network to 10.96.8.0 255.255.255.0 my pc receive the IP address but it was not able to go to internet... but this topic next thread; now I've to solve DHCP.
Thanks to all for support to a student :)

Solved!!!!

It works :)

Here the correct DHCP pool configuration:


R1841#sh running-config
Building configuration...

Current configuration : 3765 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1841
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$YL73$DZPkNN4SsF3C.4PzBmXU1/
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 10.135.100.62
ip dhcp excluded-address 10.10.11.254
ip dhcp excluded-address 10.96.8.6
!
ip dhcp pool LAN
   network 10.96.8.0 255.255.255.248
   default-router 10.96.8.6
   dns-server 8.8.8.8 8.8.4.4
   lease 0 8
!
ip dhcp pool Static-Wifi
   host 10.135.100.1 255.255.255.192
   client-identifier 01d4.c9ef.54d7.4b
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.135.100.62
!
ip dhcp pool WiFi
   network 10.135.100.0 255.255.255.192
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.135.100.62
   lease 0 1
!
ip dhcp pool WiFi-Vlan1
   network 10.10.11.0 255.255.255.0
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.10.11.254
   lease 0 3
!
ip dhcp pool VLan1
   network 10.10.10.0 255.255.255.0
   default-router 10.10.11.254
   dns-server 8.8.8.8 8.8.4.4
!
ip dhcp pool Static-LAN
   host 10.96.8.1 255.255.255.248
   client-identifier 0178.24af.889c.a8
   dns-server 8.8.8.8 8.8.4.4
   default-router 10.96.8.6
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
vpdn enable
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
 ip address 10.10.11.254 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
 speed 100
 full-duplex
 no cdp enable
!
interface FastEthernet0/0.7
 description Default Gateway Vlan 7 - LAN / Nat Inside
 encapsulation dot1Q 7
 ip address 10.96.8.6 255.255.255.248
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface FastEthernet0/0.14
 description Default Gateway Vlan 14 - NAS / No Nat Inside
 encapsulation dot1Q 14
 ip address 10.136.12.3 255.255.255.252
!
interface FastEthernet0/0.21
 description Sub-interface Default Gateway Vlan 21 - WiFi / Nat Inside
 encapsulation dot1Q 21
 ip address 10.135.100.62 255.255.255.192
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface FastEthernet0/1/0
 duplex full
 speed 100
!
interface FastEthernet0/1/1
 duplex full
 speed 100
!
interface FastEthernet0/1/2
 duplex full
 speed 100
!
interface FastEthernet0/1/3
 description Trunk per Access Point WiFi
 switchport mode trunk
 duplex full
 speed 100
!
interface ATM0/0/0
 no ip address
 no ip route-cache cef
 no ip route-cache
 no ip mroute-cache
 atm restart timer 300
 no atm ilmi-keepalive
 atm pppatm link reset
 bundle-enable
 dsl operating-mode auto
 hold-queue 224 in
!
interface ATM0/0/0.1 point-to-point
 no ip route-cache
 pvc 8/35
  pppoe-client dial-pool-number 1
 !
!
interface Vlan1
 description Interface VLAN1
 ip address 10.10.10.10 255.255.255.0
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1410
 no ip mroute-cache
!
interface Dialer0
 ip address negotiated
 no ip proxy-arp
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication pap callin
 ppp pap sent-username user password 0 pwd
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
ip http server
no ip http secure-server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 permit 10.0.0.0 0.255.255.255
dialer-list 1 protocol ip permit
!
!
!
control-plane
!
!
!
line con 0
line aux 0
line vty 0
 password pwd
 login
line vty 1 4
 login
!
scheduler allocate 20000 1000
end

R1841#

Glad to hear you got it working :)

Jon

Review Cisco Networking for a $25 gift card