«

Hello,

I got a strange problem with a analog modem connection to a cisco
1841.
At the beginning of January 2007 the modems worked fine without any
problems.
2 or 3 weeks later the modems doesn?t work. I did not get any
connection to it. the router was resettet, the lines where testest and
nothing worked. I did not get any error messages from this router.

What can I do ?
I will descripe how the physical connection is:
On the headquarter I got a cisco 3640 with a serial interface on wich
4 external modems are connected.
This modems dial in to 4 other internal Modems on a Cisco 1841 on the
remote location (WIC Modems)
All modems on both locations are in a dialer group.

I?ve testet it also with a modem connected to my pc. It dials but my
modem did not get an answer. Error message: the remote computer does
not answer.

What can I do?

Attached the configuration of the cisco 3640 and 1841

Thank you for your help.

Regards

Kai


Remote Location

Current configuration : 4964 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Router1
!
boot-start-marker
boot-end-marker
!
logging buffered 10000 warnings
logging monitor informational

!
username CPARZ2 password xxxxxxxxxxxxxxxxxx
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
ip cef
!
!
!
!
no ftp-server write-enable
!
chat-script dial "" AT OK ATDT\T TIMEOUT 90 CONNECT
chat-script reset "" ATs0=1 OK
!
!
!
interface Loopback1
ip address 192.xxx.xxxx.22 255.255.255.255
!
interface FastEthernet0/0
ip address 192.xxx.xxxx.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Async0/0/0
description Analoger Backup
ip unnumbered Dialer1
encapsulation ppp
dialer in-band
dialer rotary-group 1
dialer-group 1
async dynamic routing
async mode dedicated
compress stac
routing dynamic
!
interface Async0/0/1
description Analoger Backup
ip unnumbered Dialer1
encapsulation ppp
dialer in-band
dialer rotary-group 1
dialer-group 1
async dynamic routing
async mode dedicated
compress stac
routing dynamic
!
interface Async0/1/0
description Analoger Backup
ip unnumbered Dialer1
encapsulation ppp
dialer in-band
dialer rotary-group 1
dialer-group 1
async dynamic routing
async mode dedicated
compress stac
routing dynamic
!
interface Async0/1/1
description Analoger Backup
ip unnumbered Dialer1
encapsulation ppp
dialer in-band
dialer rotary-group 1
dialer-group 1
async dynamic routing
async mode dedicated
compress stac
routing dynamic
!
interface Dialer1
ip address xxx.xxx.120.2 255.255.255.0
encapsulation ppp
dialer in-band
dialer idle-timeout 300
dialer wait-for-carrier-time 90
dialer hold-queue 50
dialer-group 1
no keepalive
compress stac
ppp authentication chap pap
!
router eigrp 1
network 192.xxx.xxx.0
network 192.xxx.xxx.0
network xxx.xxx.120.0
auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.xxx.xxx.2
ip route 0.0.0.0 0.0.0.0 xxx.xxx.120.1 200
!
ip http server
ip http authentication local
!
access-list 100 deny udp any any eq rip
access-list 100 deny udp any any eq sunrpc
access-list 100 deny udp any any eq netbios-ns log
access-list 100 deny udp any any eq snmp log
access-list 100 deny udp any any eq snmptrap log
access-list 100 deny udp any any eq bootpc log
access-list 100 deny udp any any eq bootps log
access-list 100 deny udp any any eq time log
access-list 100 deny udp any any eq tftp log
access-list 100 deny udp any any eq netbios-dgm
access-list 100 deny udp any any eq netbios-ns
access-list 100 deny udp any any eq netbios-ss
access-list 100 permit ip any any
dialer-list 1 protocol ip permit
snmp-server community public RO
snmp-server enable traps snmp authentication linkdown linkup coldstart
warmstart
snmp-server enable traps vrrp
snmp-server enable traps tty
snmp-server enable traps envmon
snmp-server enable traps flash insertion removal
snmp-server enable traps icsudsu
snmp-server enable traps isdn call-information
snmp-server enable traps isdn layer2
snmp-server enable traps isdn chan-not-avail
snmp-server enable traps isdn ietf
snmp-server enable traps ds0-busyout
snmp-server enable traps ds1-loopback
snmp-server enable traps aaa_server
snmp-server enable traps atm subif
snmp-server enable traps cnpd
snmp-server enable traps config-copy
snmp-server enable traps config
snmp-server enable traps entity
snmp-server enable traps frame-relay
snmp-server enable traps frame-relay subif
snmp-server enable traps hsrp
snmp-server enable traps ipmulticast
snmp-server enable traps ospf state-change
snmp-server enable traps ospf errors
snmp-server enable traps ospf retransmit
snmp-server enable traps ospf lsa
snmp-server enable traps ospf cisco-specific state-change
snmp-server enable traps ospf cisco-specific errors
snmp-server enable traps ospf cisco-specific retransmit
snmp-server enable traps ospf cisco-specific lsa
snmp-server enable traps pim neighbor-change rp-mapping-change invalid-
pim-messa
ge
snmp-server enable traps pppoe
snmp-server enable traps cpu threshold
snmp-server enable traps rsvp
snmp-server enable traps syslog
snmp-server enable traps l2tun session
snmp-server enable traps vtp
snmp-server host xxx.xxxx.xxx
!
control-plane
!
!
line con 0
line aux 0
line 0/0/0 0/0/1
no flush-at-activation
script dialer dial
script reset reset
modem Dialin
transport input all
stopbits 1
speed 115200
flowcontrol hardware
line 0/1/0 0/1/1
no flush-at-activation
script dialer dial
script reset reset
modem Dialin
transport input all
stopbits 1
speed 115200
flowcontrol hardware
line vty 0 4
password 7 11282926
login
transport input all
line vty 5 15
password 7 121815140B5907
login
transport input all
!
end


Headquarter


username Router2 password xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

chat-script reset "" ATs0=1 OK
chat-script dial "" AT OK ATDT\T TIMEOUT 90 CONNECT
!
!
interface Loopback0
ip address xxx.xxx.103.1 255.255.255.255
!
interface Ethernet0/0
ip address xxx.xxx.xxx.5 255.255.255.0
ip accounting output-packets
bridge-group 2
!
interface Serial1/3
physical-layer async
description analoger Backup ara Indonesien
ip unnumbered Dialer10
encapsulation ppp
no ip mroute-cache
bandwidth 56
dialer in-band
dialer rotary-group 10
dialer-group 3
async default routing
async dynamic routing
async mode interactive
pulse-time 1
compress stac
!
interface Serial1/5
physical-layer async
description analoger Backup ara Indonesien
ip unnumbered Dialer10
encapsulation ppp
no ip mroute-cache
bandwidth 56
dialer in-band
dialer rotary-group 10
dialer-group 3
async default routing
async dynamic routing
async mode interactive
pulse-time 1
compress stac
!
interface Serial1/6
physical-layer async
description analoger Backup ara Indonesien
ip unnumbered Dialer10
encapsulation ppp
no ip mroute-cache
bandwidth 56
dialer in-band
dialer rotary-group 10
dialer-group 3
async default routing
async dynamic routing
async mode interactive
pulse-time 1
compress stac
!
interface Serial1/7
physical-layer async
description analoger Backup ara Indonesien
ip unnumbered Dialer10
encapsulation ppp
no ip mroute-cache
bandwidth 56
dialer in-band
dialer rotary-group 10
dialer-group 3
async default routing
async dynamic routing
async mode interactive
pulse-time 1
compress stac
!
interface Dialer10
ip address xxx.xxx.120.1 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
no keepalive
dialer in-band
dialer idle-timeout 300
dialer wait-for-carrier-time 90
dialer map ip xxx.xxx.120.2 modem-script dial xxxxxxxxxx
dialer hold-queue 2
dialer load-threshold 1 either
dialer-group 3
compress stac
ppp authentication chap pap
!
router eigrp 1
passive-interface Virtual-Template2
network xxx.xxx.103.0
!
ip http server
ip http authentication local
ip classless
ip route 192.xxx..26.0 255.255.255.0 xxx.xxx.120.1

line con 0
line 36
no exec
exec-timeout 0 0
no flush-at-activation
script dialer dial
script reset reset
modem InOut
transport input all
no autohangup session-timeout
stopbits 1
speed 115200
flowcontrol hardware
line 38 40
no exec
exec-timeout 0 0
no flush-at-activation
script dialer dial
script reset reset
modem InOut
transport input all
no autohangup session-timeout
stopbits 1
speed 115200
flowcontrol hardware
line aux 0
line vty 0 4
password xxxxxxxxxxxxxxxxx
login
!
end