HELP!!! DDR over Async connection

[robbiear]

Can any body tell me if I can configure a 2509 with DDR over async dialup to ISP using DHCP for dynamic address assignment on the router.

 

[whatup]

Here is what I use on my 2501 for DDR to ISP

!
interface Ethernet0
ip address 10.1.1.1 255.255.255.0
ip nat inside
no ip route-cache
no ip mroute-cache
no keepalive
!
interface Async1
ip address negotiated
ip nat outside
encapsulation ppp
no ip mroute-cache
keepalive 10
dialer in-band
dialer idle-timeout 50000
dialer string xxxxxxxxxx !your dialup number
dialer-group 5
async dynamic routing
no peer default ip address
fair-queue
ppp chap hostname xxxxxxxx !your username
ppp chap password xxxxxxxx !your password
!
ip nat inside source list 85 interface Async1 overload
access-list 85 permit 10.1.1.0 0.0.0.255
ip route 0.0.0.0 0.0.0.0 async1

This should get you pointed in the right direction

 

[jgercken]

You need to configure unidirectional chap authentication. Normally cisco devices challenge each other. When dialing into an ISP you only want to challenge the dialing router.
see:

http://www.cisco.com/warp/public/131/ppp_callin_hostname.html

----------------------------------------
Wassabi Pop Tarts! Write Kellogs today!