Re: Need help with DHCP

"Trendkill" <jpmason@xxxxxxxxx> wrote in message
news:1190862498.829029.121640@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Sep 26, 6:48 pm, "Song" <s...@xxxxxxxx> wrote:
Hi, I'm having problem adding DHCP service to my existing network. My
laptop is getting priviate IP assigned when plugged into
FastEthernet4/0/0,
and I can ping them within network from my public subnet aa.bb.cc.0/20,
but
I
can't seem to get out to the Internet from private subnet. Possibly a
routing issue? Please
help. Note: aa.bb.cc.0/20 is my public subnet, xx.yy.zz.48/30 is
upstream
provider, 10.1.1.0/24 is unable to brows.

!
10.1.1.0 255.255.255.0
dns-server aa.bb.cc.3 aa.bb.cc.4
default-router 10.1.1.1
domain-name abc.com
lease infinite
!
interface FastEthernet4/0/0
ip address 10.1.1.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no ip mroute-cache
load-interval 30
full-duplex
no cdp enable
!
interface FastEthernet5/0/0
description --- Internet Gateway
ip address xx.yy.zz.50 255.255.255.248
ip access-group 111 in
ip verify unicast reverse-path
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache flow
no ip mroute-cache
load-interval 30
full-duplex
no cdp enable
!
interface FastEthernet5/0/1
description --- LAN for Switch
ip address aa.bb.cc.1 255.255.240.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache policy
ip route-cache flow
no ip mroute-cache
load-interval 30
full-duplex
no cdp enable
!
ip route 0.0.0.0 0.0.0.0 xx.yy.zz.49

Without NATing, how is this supposed to work? You may route out to
the internet, but the internet does not know how to get back to a
private IP address range that is not NATed to a public IP. Am I
missing something?


Sorry, I forgot about NAT. Below didn't work:
!
interface FastEthernet5/0/0
...
ip nat outside
!
ip nat inside source list 1 interface FastEthernet5/0/0 overload
!
access-list 1 permit 10.1.1.0 0.0.0.255
!


.

Relevant Pages

  • Re: Need help with DHCP
    ... and I can ping them within network from my public subnet aa.bb.cc.0/20, ... interface FastEthernet4/0/0 ... Sorry, I forgot about NAT. ...
    (comp.dcom.sys.cisco)
  • Re: Need help with DHCP
    ... can't seem to get out to the Internet from private subnet. ... aa.bb.cc.0/20 is my public subnet, ...
    (comp.dcom.sys.cisco)
  • Re: Problem configuring NAT to share Internet Connection
    ... One of my NICs in the server connect to a DSL ... modem and it connects to internet. ... > interface, that connects to the DSL modem, LAN interface, that connects to ... >> 7.- To connect server to Internet, I create a new network connection. ...
    (microsoft.public.win2000.ras_routing)
  • Internet thru Cisco 871
    ... SDM wizards and didn't get the internet. ... expected static IP address on the Dialer0 interface but fail ping ... zone security private ... ip http access-class 3 ...
    (comp.dcom.sys.cisco)
  • Re: Problem configuring NAT to share Internet Connection
    ... This is the IPCONFIG information of the server (where you can see Internet ... interface, that connects to the DSL modem, LAN interface, that connects to ... > 7.- To connect server to Internet, I create a new network connection. ...
    (microsoft.public.win2000.ras_routing)