Cisco Newbie Question

[ssj200565]

This is a repost from a week ago.  Ive attached my network diagram and running configs of the switches and routers within my lab network.  My issue is when I start using the serial interfaces on my 2621xm router and 2620 router I cannot get out to the WAN from my 2950 switch.  If I use f0/0 on my 2621xm and plug it into my switch everything works fine but when I shut that interface down and start using my serial interfaces my switch stops talking to my WAN network?  Ive confirmed that I can get to both routers from my switch, I can even ping the interface that connects me to my WAN network on my my 2621xm router from my 2620 switch but I cannot get out past that?  I would like to get this issues resolved so I can get away from the router on a stick config and use both interfaces (s0/2 and f0/0) on my 2621xm with STP and learn hands on about failover networking with cisco switches and routers.  Any help would be greatly apprecialted!          

[cadet alain]

Hi,

on 2621XM

1)

no ip nat pool nat-pool 192.168.9.10 192.168.9.19 netmask 255.255.255.0

no ip nat inside source list 6 pool nat-pool

no ip nat inside source list 7 pool nat-pool

ip nat inside source list 6 interface f0/1

2)

no ip route 192.168.1.0 255.255.255.0 192.168.11.0

int s0/2

ip address 192.168.11.1 255.255.255.252

ip route 192.168.1.0 255.255.255.0 192.168.11.2

on 2620

1)

int s0/1

ip address 192.168.11.2 255.255.255.252

2)

ip dhcp pool test-pool

   no default-router 192.168.9.1

   default-router 192.168.1.249

then ipconfig/release and ipconfig/renew on a host connected to the 2950

Regards

Alain

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[ssj200565]

Thanks for your help Alain, ive made the changes that your recommended but still not luck.  192.168.9.1 is my router that is directly connected to the internet, thats why I had that setup as a default route on my routers.  After applying these changes I cannnot ping www.google.com from my 2620 or my 2950.  I can however ping both interfaces on the 2621XM (f0/1 and s0/2) from my 2620 and my 2950.  When I do a traceroute from my 2950 my first hop is 192.168.1.249 then 192.168.11.1 then I lose it.  On my 2620 when I run a traceroute my first hop is 192.168.11.1 and then I lose it.  looks like its routing correctly but cant get back if I try going out? Ive attached screen shots of the changes you requested and a tracroute from the 2621xm going out to the internet.  I appreciate your help and again any help on this would be greatly appreciated!