Cisco 1720 - Need help configuring dialer/DDR w/AUX 0 & external modem 1

[rainman]

I am using a Cisco 1720 with 0 WIC's in any slots. Until I can afford to pickup a DSL/FA WIC, I want to experiment with this router by establishing a PPP link via the AUX 0 port and a USR Courier external modem.

Can anybody please point me in the right direction as to how to configure this? I need to configure the router so that:

- intersting traffic is defined as PPP
- PAP username/pwd configured
- dialer information (phone # / etc.)

Once my PPP session is established I will toy with NAT and the FE port.


Any thoughts or URL's to point me to?


Thanks - Rainman

 

[rainman]

Well it seems I did manage to get the C1720 to create the connection.

The problem I am having is regarding this error message:

00:14:46: %PPP-3-AUXFAST: Fast-switching to aux port, packet dropped

When I do an extended ping with the source set to my router's fastethernet port (10.0.0.1), it can ping a public address on the Internet.

When I try to ping that same IP from my workstation (10.0.0.2), I receive the above %PPP-3-AUXFAST error, and the ping gives me a "request timeout".

Any thoughts?

Here's my running-configuration so far:

Current configuration : 1224 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname "C1720"
!
enable password [ENABLEPASS]
!
memory-size iomem 25
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface FastEthernet0
ip address 10.0.0.1 255.255.255.0
ip nat inside
no ip route-cache
speed auto
!
interface Async5
description connected to Internet
no ip address
ip nat outside
encapsulation ppp
no ip route-cache
dialer in-band
dialer rotary-group 1
async mode dedicated
!
interface Dialer1
description connected to Internet
ip address negotiated
ip nat outside
encapsulation ppp
dialer in-band
dialer string ###-####
dialer hold-queue 10
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username [USERNAME] password [PASSWORD]
!
ip nat inside source list 1 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
!
access-list 1 permit 10.0.0.0 0.0.0.255
dialer-list 1 protocol ip permit
no cdp run
!
line con 0
logging synchronous
line aux 0
modem InOut
modem autoconfigure discovery
transport input all
autoselect ppp
stopbits 1
speed 115200
flowcontrol hardware
line vty 0 4
login
!
end



Thanks for any help!

-Rainman

 

[rainman]

Well, I did a search on Cisco's webpage for that error and it seems:

PPP Messages
The following are PPP error messages.

Error Message

%PPP-3-AUXFAST: Fast-switching to aux port, packet dropped
Explanation A packet was fast-switched to the auxiliary port. The auxiliary port should not be part of a dialer rotary-group, dialer pool, or multilink bundle that might be the destination of a fast-switched packet. The packet has been dropped.

Recommended Action Use the no ip route-cache command to disable fast switching on whatever configuration source provides the configuration for the link to this port.


I went into the configuration, and changed my Dialer1 interface to support "no ip route-cache", and now I can ping that public Internet address from my workstation!!!

If anyone else spots something in my config to tweak it out a little please advise.


-Rainman