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Cisco pppoe client can connect multiple pppoe sessions

 
 
John Nordien
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      11-22-2004

I have a Cisco 1600 series router that is being used as a an internet
gateway to a DSL internet service.
I am running IP/FW/NAT. Several fixed NAT entries are forwarded to internal
servers using interface
DIALER 1 as the primary internet interface. We have several fixed IP
addresses according to the
dialup profile and using PAP authentication. The combination of
username/password determines the
IP address assigned at connect time.

Current router situation

|
internal LAN | -10.0.0.1 (e0) --- (e1)-> Dialer 1 (pppoe) IP1 =
172.16.0.1 ---> INTERNET
| (NAT/PAT)

ip route 0.0.0.0 0.0.0.0 Dialer 1
No routing protocols used.


The Cisco pppoe client can connect multiple pppoe sessions so I have tried
to set up the
following network addition.
NAT entries fwd packets from 172.16.0.1:80 to 10.0.0.9:8081 successful.
NAT entries fwd packets from 172.16.0.2:80 to 10.0.0.9:8084 not working.


|- TCP=8081 --| |Dialer 1 (pppoe) IP1 =
172.16.0.1 --> INTERNET
10.0.0.9 -| >-10.0.0.1 (e0) -- (e1)-|
|- TCP=8084 --| (NAT/PAT) |Dialer 2 (pppoe) IP2 =
172.16.0.2 --> INTERNET

ip route 0.0.0.0 0.0.0.0 Dialer 1
No routing protocols used.

What I am trying to do is to have multiple port 80 FWD through the router to
different ports on the
inside network. In this one case 2 different TCP(80) NAT/PAT'ed to the
same server using different
TCP ports.
Case 1 is to have 172.16.0.1:80 --> NAT/PAT --> 10.0.0.9:8081
Case 2 is to have 172.16.0.2:80 --> NAT/PAT --> 10.0.0.9:8084


I have the multiple DSL pppoe sessions established, and the NAT/PAT
established for TCP:8084 but
clients cannot complete their web sessions. I suspect that routing is the
problem as internal hosts
are using 10.0.0.1 as the default gateway and my gateway is using Gateway
Of Last Resort out
interface DIALER 1.

Is this a workable situation?

Thanks for any & all help.

John.


 
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