I have a 2620 that we use for Qwest DSL.
The problem I'm having is that none of our DSL customers that are connected to the box with the ATM line cannot reach/ping/trace each other on that ATM line but outside the 2620 you can. It's like the 2620 doesnt know how to route internally from one virtual circuit to another.
Here is a sample of my configuration:
interface FastEthernet0/0
ip address xx.xx.12.2 255.255.254.0
ip route-cache same-interface
no ip mroute-cache
duplex auto
speed auto
no cdp enable
!
interface ATM1/0
no ip address
no ip mroute-cache
atm vc-per-vp 256
no atm ilmi-keepalive
no scrambling-payload
interface ATM1/0.33 point-to-point
description None
bandwidth 100
pvc 1/33
encapsulation aal5mux ppp Virtual-Template1
!
!
interface Virtual-Template1
ip unnumbered FastEthernet0/0
peer default ip address pool IP_ADDRESS
ppp authentication pap
!
ip local pool IP_ADDRESS xx.xx.13.20 xx.xx.13.159
ip classless
ip route 0.0.0.0 0.0.0.0 xx.xx.12.1
ip route xx.xx.13.12 255.255.255.252 xx.xx.13.13
ip route xx.xx.13.160 255.255.255.240 xx.xx.13.161
xx.xx.12.1 is our backbone router and the last two lines represent IP block assigned to a few customers.
I hope this makes sense!
Thanks,
Lee
