DSL router and PPPoE PC Client and ip routing

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I read this doc from Cisco and it say that you have to turn off the ip routing on the router (no ip routing):

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a78c.shtml

I would like to know if is possible to config a PPPoE PC Client and not disable the ip routing on the router.

I have this scenario in mind:

Internet --> [atm interface]Router 877W [fastethernet 0] ---> [Outside] 3rd party firewall with pppoe client [inside] ---> [FE 1,2,3 and WLAN] 877W

By this way, the PCs on the LAN are able to connect to the 877W switch or WLAN interface, and navigate to internet trough the firewall gateway.

I have this problem too.
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Marwan ALshawi Fri, 08/08/2008 - 07:01

sure u can

the PC should have the firewall inside ip address as its default gateway

and let say the router FE0 ip is 192.168.1.1

and the firewall outside ip is 192.168.1.2

and those connected to gether

on the firewall u need to make a default route

in cisco u do it on the router like

ip route 0.0.0.0 0.0.0.0 192.168.1.1

on the oruter do the following

let say the network behind the firewall ur LAN is 172.16.0.0/16

on the router:

ip route 172.16.0.0 255.255.0.0 192.168.1.2

this way should work fine

good luck

please, if helpful rate

gpellejaj Sun, 08/10/2008 - 22:41

I finally get it working. I have created 2 bridge groups (no routed), 1 with the atm and the fast ethernet 3 interfaces, (on vlan 10), and a second one with the wlan and the other free interfaces.

By this way, the firewall is able to get the public IP and the router is configured in routing mode on the inside and bridge mode on the outside.

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