Cisco 876 with External DSL modem?

[tantonovich]

Hello, my ISP recently upgraded their infrastructure and now our 876 will not connect through ATM.

I have the WAN connection working temporarily through another router using the external modem my ISP gave me.

I am trying to configure the 876 to use one of the FastEthernet ports for WAN.  I have configured everything the same as I would an 871/877, but its like the dialer wont connect.  Can I use this router with an external modem?

Thanks!

[paolo bevilacqua]

Yes, with an intervace  VLAN configuration.

[tantonovich]

Thanks for the quick reply!! I thought that might be possible solution, but wasn't able to figure out how to get it working.

I tried creating another VLAN and pointing that to a Dialer int, but IOS wouldn't allow it. Could you check out my config and show me an example of how I would correctly config the VLANS to make this work?

Thanks again!!

interface BRI0
no ip address
encapsulation hdlc
shutdown
!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface FastEthernet0
description Link to DSL-Modem
pppoe-client dial-pool-number 1
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
description internal LAN
ip address 10.10.10.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
!
interface Dialer1
description MTA-DSL
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap chap callin
ppp chap hostname xxx@xxxx.net
ppp chap password 7 15040A00082F322625
ppp pap sent-username xxx@xxxx.net password 7 15040A00082F322625
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip http server
ip http access-class 1
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 1 interface Dialer1 overload
!
access-list 1 remark NAT-LAN
access-list 1 permit 10.10.10.0 0.0.0.255
dialer-list 1 protocol ip permit

[paolo bevilacqua]

You should be able to configure vlan2 even with a base image, then assign the port to it.

There are many examples if you search.

[tantonovich]

I tried creating a VLAN2, assigned FastEthernet3 to it using switchport access vlan 2

Then tried pointing VLAN2 to the dialer, but IOS said this wasn't allowed on VLAN interfaces....

[tantonovich]

Correction, I tried adding FastEthernet0 to that VLAN....

[paolo bevilacqua]

Recommend you look for examples, otherwise you get more and more confused.