03-19-2013 09:49 AM - edited 03-04-2019 07:20 PM
My team and I are having issues getting this configuration to work. Can anyone help me find where we went wrong? We are using a 2811 Cisco router in class and the DHCP is not working. All other configurations for the other 2 routers are working but those were the easy ones.
Here is the command structure:
Frame relay
DHCP
HDLC
NAT
Sub interfaces
no VLAN on this router or Loopbacks
The LA and SEA routers configs work just fine.
ABQ Router::
en
config t
enable secret cisco
line con 0
password bob
login
line vty 0 4
password BOB
login
int s0/0/0
encapsulation frame-relay
ip summary-address eigrp 50 192.168.1.0 255.255.255.192
clock rate 64000
frame-relay intf-type dce
int s0/0/1
encapsulation frame-relay
ip summary-address eigrp 50 192.168.2.0 255.255.255.252
no keepalive
interface Serial0/0/1.102 point-to-point
description WAN CONNECTION TO LA 102
ip address 192.168.3.1 255.255.255.0
no keepalive
frame-relay interface-dlci 102
no shut
int s0/0/1.103 point-to-point
frame-relay interface-dlci 103 point-to-point
description WAN CONNECTION TO SEA DLCI 103
ip address 192.168.2.1 255.255.255.0
frame-relay interface-dlci 103
no keepalive
int f0/0.64
encapsulation dot1q 64
ip nat inside
ip address 192.168.1.65 255.255.255.192
int f0/0.128
encapsulation dot1q 128
ip nat inside
ip address 192.168.1.129 255.255.255.192
int f0/0.192
encapsulation dot1q 192
ip nat inside
ip address 192.168.1.193 255.255.255.192
exit
ip dhcp excluded-address 192.168.1.64 192.168.1.65
ip dhcp excluded-address 192.168.1.128 192.168.1.129
ip dhcp excluded-address 192.168.1.192 192.168.1.193
ip dhcp excluded-address 192.168.1.10
ip dhcp pool ABQ
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
ip dhcp pool LA
network 192.168.8.0 255.255.255.0
default-router 192.168.5.1
dns-server 8.8.8.8
ip dhcp pool SEA
network 192.168.16.0 255.255.255.0
default-router 192.168.6.1
dns-server 8.8.8.8
int f0/1
ip address 10.10.50.1 255.255.255.252
ip nat outside
router eigrp 50
network 192.168.1.0 0.0.0.63
network 192.168.2.0
network 192.168.3.0
no auto-summary
ip nat inside source list 1 interface FastEthernet0/1 overload
access-list 1 permit 192.168.0.0 0.0.31.255
exit
Solved! Go to Solution.
03-19-2013 10:21 AM
Look over your DHCP pool configuration again. You have things misconfigured here.
ip dhcp pool ABQ
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
ip dhcp pool LA
network 192.168.8.0 255.255.255.0
default-router 192.168.5.1
dns-server 8.8.8.8
ip dhcp pool SEA
network 192.168.16.0 255.255.255.0
default-router 192.168.6.1
dns-server 8.8.8.8
03-19-2013 11:45 AM
Please note the subnet for your 3 vlans namely 64,128,192 and check how the pools are configured they are in all different Network and doesnt match the same network of the VLANs.
hence the requests coming from the clients in these vlans will not reach the pool(DHCP server) for it to assign the ip addresss
Hence please rework the network under DHCP pool with proper Subnet mask matching same as those of vlans configured
Reply if it helps
03-19-2013 12:14 PM
hello Joseph
where are the recipients for the dhcp - if over the F/R you may need a dhcp relay ( ip helper- address)
Res
paul
Sent from Cisco Technical Support iPad App
03-19-2013 12:50 PM
Joseph,
Here are a couple of examples. Maybe you can see where your problem lies in comparing these with yours.
ip dhcp pool dev-pool
import all
network 172.27.54.0 255.255.255.128
default-router 172.27.54.1
dns server x.x.x.x y.y.y.y
ip dhcp pool prod-pool
import all
network 172.27.54.128 255.255.255.128
default-router 172.27.54.129
dns server x.x.x.x y.y.y.y
In my scenario, I have a couple of vlans configured as well:
vlan 54
ip address 172.27.54.1 255.255.255.128
vlan 128
ip address 172.27.54.129 255.255.255.128
Hope these examples guide you to your answer.
03-19-2013 02:11 PM
Hello
Are your clients on these vlans ?
Res
Pauli
Sent from Cisco Technical Support iPad App
03-19-2013 10:21 AM
Look over your DHCP pool configuration again. You have things misconfigured here.
ip dhcp pool ABQ
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
ip dhcp pool LA
network 192.168.8.0 255.255.255.0
default-router 192.168.5.1
dns-server 8.8.8.8
ip dhcp pool SEA
network 192.168.16.0 255.255.255.0
default-router 192.168.6.1
dns-server 8.8.8.8
03-19-2013 11:29 AM
Can you point me in the right direction? What ip is wrong?
03-19-2013 11:45 AM
Please note the subnet for your 3 vlans namely 64,128,192 and check how the pools are configured they are in all different Network and doesnt match the same network of the VLANs.
hence the requests coming from the clients in these vlans will not reach the pool(DHCP server) for it to assign the ip addresss
Hence please rework the network under DHCP pool with proper Subnet mask matching same as those of vlans configured
Reply if it helps
03-19-2013 12:50 PM
Joseph,
Here are a couple of examples. Maybe you can see where your problem lies in comparing these with yours.
ip dhcp pool dev-pool
import all
network 172.27.54.0 255.255.255.128
default-router 172.27.54.1
dns server x.x.x.x y.y.y.y
ip dhcp pool prod-pool
import all
network 172.27.54.128 255.255.255.128
default-router 172.27.54.129
dns server x.x.x.x y.y.y.y
In my scenario, I have a couple of vlans configured as well:
vlan 54
ip address 172.27.54.1 255.255.255.128
vlan 128
ip address 172.27.54.129 255.255.255.128
Hope these examples guide you to your answer.
03-19-2013 02:11 PM
Hello
Are your clients on these vlans ?
Res
Pauli
Sent from Cisco Technical Support iPad App
03-19-2013 12:14 PM
hello Joseph
where are the recipients for the dhcp - if over the F/R you may need a dhcp relay ( ip helper- address)
Res
paul
Sent from Cisco Technical Support iPad App
03-19-2013 07:30 PM
The recipients are 2 other 2811 Cisco routers and 2 other end users. The basic set up it 3 cities and only ABQ has DHCP. LA and SEA have Loopbacks and access through F/R to ABQ. ABQ is the main for internet access. You guys are all pro's so you know more than I do on this so I don't have to over explain it as I tend to do. Working on the ip helper-address now. Going to run it through packet tracer to see if any errors show up but don't have access to the physical equiptment until Wed at 9 am.
03-19-2013 07:23 PM
Ok here is the new running config for the router.....again this is for a troubleshooting lab and we changed the DHCP pools and a few frame-relay commands. Other than issuing the NAT statement how does it look?
hostname ABQ
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
memory-size iomem 10
!
dot11 syslog
ip source-route
!
!
ip cef
ip dhcp excluded-address 192.168.0.1 192.168.0.10
ip dhcp excluded-address 192.168.1.1 192.168.1.10
ip dhcp excluded-address 192.168.2.1 192.168.1.10
ip dhcp excluded-address 192.168.3.1 192.168.1.10
!
ip dhcp pool VLAN64
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
!
ip dhcp pool VLAN128
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
dns-server 8.8.8.8
!
ip dhcp pool VLAN192
network 192.168.3.0 255.255.255.0
default-router 192.168.3.1
dns-server 8.8.8.8
!
!
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice-card 0
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
description management vlan 1
encapsulation dot1Q 1 native
ip address 192.168.0.1 255.255.255.0
!
interface FastEthernet0/0.64
description vlan 64
encapsulation dot1Q 64
ip address 192.168.1.1 255.255.255.0
!
interface FastEthernet0/0.128
description vlan 128
encapsulation dot1Q 128
ip address 192.168.2.1 255.255.255.0
!
interface FastEthernet0/0.192
description vlan 192
encapsulation dot1Q 192
ip address 192.168.3.1 255.255.255.0
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
encapsulation frame-relay
ip summary-address eigrp 50 192.168.0.0 255.255.255.224 5
clock rate 64000
frame-relay intf-type dce
!
interface Serial0/0/0.103 point-to-point
description WAN CONNECTION TO SEA DLCI 103
ip address 192.168.4.1 255.255.255.0
no keepalive
frame-relay interface-dlci 103
!
interface Serial0/0/1
no ip address
encapsulation frame-relay
ip summary-address eigrp 50 192.168.0.0 255.255.255.224 5
clock rate 64000
frame-relay intf-type dce
!
interface Serial0/0/1.102 point-to-point
description WAN CONNECTION TO LA 102
ip address 192.168.5.1 255.255.255.0
no keepalive
frame-relay interface-dlci 102
!
router eigrp 50
network 192.168.0.0
network 192.168.4.0
network 192.168.5.0
no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
03-21-2013 09:27 AM
Got it working, thanks for all the help and direction.
Here is the new config with the corrections
hostname ABQ
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
memory-size iomem 10
!
dot11 syslog
ip source-route
ip route 0.0.0.0 0.0.0.0 int f0/1
!
ip cef
ip dhcp excluded-address 192.168.0.1 192.168.0.10
ip dhcp excluded-address 192.168.1.1 192.168.1.10
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 VLAN64
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
!
ip dhcp pool VLAN128
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
dns-server 8.8.8.8
!
ip dhcp pool VLAN192
network 192.168.3.0 255.255.255.0
default-router 192.168.3.1
dns-server 8.8.8.8
!
!
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice-card 0
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
description management vlan 1
encapsulation dot1Q 1 native
ip address 192.168.0.1 255.255.255.0
!
interface FastEthernet0/0.64
description vlan 64
encapsulation dot1Q 64
ip address 192.168.1.1 255.255.255.0
!
interface FastEthernet0/0.128
description vlan 128
encapsulation dot1Q 128
ip address 192.168.2.1 255.255.255.0
!
interface FastEthernet0/0.192
description vlan 192
encapsulation dot1Q 192
ip address 192.168.3.1 255.255.255.0
!
interface FastEthernet0/1
ip address 10.10.50.1 255.255.255.252
no shutdown
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
encapsulation frame-relay
ip summary-address eigrp 50 192.168.0.0 255.255.255.224 5
clock rate 64000
frame-relay intf-type dce
!
interface Serial0/0/0.103 point-to-point
description WAN CONNECTION TO SEA DLCI 103
ip address 192.168.4.1 255.255.255.0
no keepalive
frame-relay interface-dlci 103
!
interface Serial0/0/1
no ip address
encapsulation frame-relay
ip summary-address eigrp 50 192.168.0.0 255.255.255.224 5
clock rate 64000
frame-relay intf-type dce
!
interface Serial0/0/1.102 point-to-point
description WAN CONNECTION TO LA 102
ip address 192.168.5.1 255.255.255.0
no keepalive
frame-relay interface-dlci 102
!
router eigrp 50
network 192.168.0.0
network 192.168.4.0
network 192.168.5.0
no auto-summary
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
!
!
control-plane
!
!
!
!
mgcp fax t38 ecm
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
login
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