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DDR Help

martial1410
Level 1
Level 1

I'm trying to configure a Cisco 3800 with a WIC-2AM-V2 to do DDR.  I've gotten it to work before, but it was a while and now the config doesn't seem to work.  I'm using an Lo0 interface and ip unnumbered on the Dialer interface.  Using debug dialer and debug ppp and see nothing at all trying to dial out.

##############################################################

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname DDR

!

boot-start-marker

boot-end-marker

!

logging buffered 6000 debugging

!

no aaa new-model

ip cef

!

!

!

!

ip auth-proxy max-nodata-conns 3

ip admission max-nodata-conns 3

!

voice-card 0

no dspfarm

!

!

chat-script generic ABORT BUSY ABORT NO ## AT OK ATDT\T TIMEOUT 30 CONNECT

!

!

!

!

!

!

!

!

!

!

!

!

!

username ATC3262 password ###########

username ATC3262 autocommand ppp 192.168.128.6

!

!

!

!

!

!

!

interface Loopback0

ip address 192.168.128.5 255.255.255.252

!

interface GigabitEthernet0/0

ip address 10.10.100.152 255.255.255.0

duplex auto

speed auto

media-type rj45

!

interface GigabitEthernet0/1

description ******* BAD INTERFACE!  DO NOT USE!!! *******

no ip address

shutdown

duplex auto

speed auto

media-type rj45

!

interface Async0/0/0

no ip address

encapsulation ppp

dialer in-band

dialer rotary-group 1

dialer-group 1

async dynamic address

async mode interactive

!

interface Async0/0/1

no ip address

encapsulation ppp

dialer in-band

!

interface Dialer1

ip unnumbered Loopback0

encapsulation ppp

no ip split-horizon

dialer in-band

dialer idle-timeout 120 either

dialer map ip 192.168.128.6 name ATC3262 1##########

dialer-group 1

ppp authentication chap callin

!

interface Dialer2

no ip address

!

router eigrp 99

passive-interface Loopback0

network 10.10.100.0 0.0.0.255

network 192.168.128.0

auto-summary

!

ip forward-protocol nd

ip route 10.100.1.0 255.255.255.248 192.168.128.6

!

!

ip http server

no ip http secure-server

!

dialer-list 1 protocol ip permit

!

!

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

line aux 0

line 0/0/0

modem InOut

autoselect ppp

stopbits 1

speed 115200

flowcontrol hardware

line 0/0/1

stopbits 1

speed 115200

flowcontrol hardware

line vty 0 4

exec-timeout 30 0

login local

transport input telnet

!

scheduler allocate 20000 1000

!

end

################################################################################

Thanks!

1 Reply 1

Richard Burts
Hall of Fame
Hall of Fame

Todd

I have looked through the config that you posted. The first thing that I notice is your static route of

p route 10.100.1.0 255.255.255.248 192.168.128.6

The next hop address of 192.168.128.6 will be seen by the router as part of the subnet on the loopback interface and the router will attempt to forward there rather than sending the traffic through the dialer.

I am not sure why you are putting the address on the loopback and then using ip unnumbered on the dialer. The simple fix would be to put the address on the dialer instead of the loopback. If there is some good reason to use ip unnumbered then you need to change something in your static route.

HTH

Rick

HTH

Rick
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