Problem with DSL connection.

[leofalconi]

Hello people,

I have a problem with the ADSL connection on C887VA-K9, 15.4(3)M6a.

The configuration of ATM and Dialer is this:

interface ATM0
no ip address
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 2

interface Dialer2
 mtu 1492
 ip address negotiated
 ip nat outside
 ip virtual-reassembly in
 encapsulation ppp
 dialer pool 2
 dialer-group 1
 ppp chap hostname W14201532648
 ppp chap password 7 xxxx
 ppp pap sent-username W14201532648 password 7 xxxx
 crypto map ROE

From the show ip int brief command I see that the ATM int is UP/UP while the Virtual Acces 4 is UP/DOWN.

I have typed the "debug ppp authentication" and "debug ppp negotiation" and I have attacched the files.

I think there is a problem with LCP phase, and the problem is provider side.

What do you think?

Thank you,

Leonardo

[Georg Pauwen]

Hello Leonardo,

you are running a VPN (crypto map ROE) ? Can you post the full config ? Here is a sample configuration for a typical ADSL/PPPoE link on an 887:

no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
service password-encryption
!
hostname
!
boot-start-marker
boot-end-marker
!
logging buffered 65535
logging console informational
enable secret
!
no aaa new-model
memory-size iomem 10
clock timezone ACST 9 30
clock summer-time ACST recurring first Sun Oct 2:00 first Sun Apr 2:00
!
!
no ip source-route
!
!
ip dhcp excluded-address 192.168.0.0 192.168.0.10
!
ip dhcp pool lan
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
dns-server 192.231.203.132 192.231.203.3
lease infinite
!
!
ip cef
no ip bootp server
ip domain name internode.on.net
ip name-server 192.231.203.132
ip name-server 192.231.203.3
!
!
!
!
archive
log config
hidekeys
username admin secret
!
!
ip ssh time-out 90
ip ssh authentication-retries 2
!
!
!
!
!
!
!
interface ATM0
description --- Internode ADSL ---
no ip address
no shutdown
no atm ilmi-keepalive
pvc 8/35
tx-ring-limit 3
encapsulation aal5snap
pppoe-client dial-pool-number 1
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
description --- Ethernet LAN ---
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1420
!
interface Dialer0
description --- Internode ADSL ---
ip address negotiated
ip mtu 1460
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1420
dialer pool 1
dialer-group 1
ppp chap hostname @internode.on.net
ppp chap password
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
no ip nat service sip udp port 5060
ip nat inside source list NAT interface Dialer0 overload
ip route 0.0.0.0 0.0.0.0 Dialer0
!
ip access-list extended MGMT-IN
permit ip 203.26.95.0 0.0.0.255 any
permit ip 192.168.0.0 0.0.0.255 any
ip access-list extended NAT
permit ip 192.168.0.0 0.0.0.255 any
!
no cdp run

!
!
!
!
!
control-plane
!
!
line con 0
login local
no modem enable
line aux 0
line vty 0 4
access-class MGMT-IN in
login local
!
scheduler max-task-time 5000
sntp server 192.231.203.132
crypto key generate rsa mod 1024
end

[Deepak Kumar]

Hi,

Please edit some ATM interface setting as below

interface ATM0/1/0

no ip address

no ip mroute-cache

no atm ilmi-keepalive

dsl operating-mode auto

pvc 8/35

pppoe-client dial-pool-number 2

I hope your problem will resolve.

Thanks,

Deepak Kumar

[Amit Goyal]

Try "ppp mtu adaptive" under dialer interface and check if it helps.

HTH

-Amit