How to use 2501 and external DSU to dial into ISP

[d.borowski]

Hello,

2501 is connected to DSU via s0 an V.35.

DSU has ISP phone number stored and dials it automaticaly. There is no IP on s0 only on e0.

Authentication PAP.

My config:interface Ethernet0

ip address xxx.xxx.xx.201 255.255.255.252

!

interface Serial0

ip unnumbered Ethernet0

encapsulation ppp

no fair-queue

no cdp enable

ppp authentication pap callin

ppp pap sent-username xxx password xxxx!

interface Serial1

no ip address

shutdown

!

ip classless

ip route 0.0.0.0 0.0.0.0 Serial0

no ip http server

!

Does it make sense ?

Thanks in advance.

[deilert]

what you can do is enable DTR dialing on the s0 , What this does it it sets DTR low on the router , when the there is traffic to be sent out s0 it raises DTR and the DSU receives the DTR signal from the router and dials the # it has configured.

config would be like this

int s0

dialer dtr

dialer rotary-group 1

encap ppp

no ip address

int di 1

ip unnumbered Ethernet0

ppp authentication pap callin

ppp pap sent-username xxxxx password xxxxxx

dialer-group 1

!

dialer-list 1 protocol ip permit