Let me start by saying that I am very inexperienced with Cisco routers. I have two remote users (Howard and Gary - me) who dial into our central site which has an 801 ISDN router. Originally, one remote user had a 761 router and the other an 801. A couple of years ago we switched to using terminal adapters (Xircom) and are now using Eicon USB adapters. The dial up used to work OK with the TAs (and at one time there was a third user, GaryM).
For application reasons, both remote PCs need fixed IP addresses and the central network uses only static IP addresses. This used to work OK and the central 801 dials back.
Now what happens with both remote PCs (which are the same hardware/OS) is that with the IP address (of say) 10.0.1.6, the remote PC dials up, authenticates (as Gary-TA, e.g.) and hangs up waiting for the dial-back, which then occurs; however the connection is then dropped immediately with the connection being refused by the server.
If I set the remote PC to "Obtain IP address automatically", on dial-back, the IP address 172.16.0.2 is assigned, and is accepted. The connection holds, but unfortunately, none of my central machines know anything about 172.16.0.2.
I don't know what's caused this. Changes that I can think of between it working and now have been:
1) Service pack update on Win2K
2) Change to WinXP
3) Change from Xircom to Eicon TA
4) (Attempt to) enable SNMP on the 801
maybe other stuff.
Please, Please can someone help?
Thanks,
Gary Cooper
801 Configuration
-----------------
Script started on Fri Mar 7 15:40:11 2003
cmserver:/home/gcooper:291> script router.config2
telnet central-801
Trying...
Connected to Central-801.
Escape character is '^]'.
Local flow control off
User Access Verification
Password:
Central-801>en
Password:
Central-801#sho conf
Using 1865 out of 8064 bytes
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Central-801
!
logging buffered 200000 debugging
enable secret 5 <encrypted password>
enable password <password>
!
username Gary-801 password 0 <password>
username Howard-761 password 0 <password>
username Gary-TA callback-dialstring <dialback no> password 0 <password>
username Howard-TA callback-dialstring <dialback no> password 0 <password>
username GaryM-TA callback-dialstring <dialback no> password 0 <password>
ip subnet-zero
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address <lan IP of router> 255.255.255.0
no ip directed-broadcast
!
interface BRI0
description ******* ISDN Link to Gary and Howard *******
ip address 172.16.0.1 255.255.255.248
no ip directed-broadcast
encapsulation ppp
dialer map ip 172.16.0.4 name Gary-TA class gadc
dialer map ip 172.16.0.5 name Howard-TA class gadc
dialer map ip 172.16.0.6 name GaryM-TA class gadc
dialer map ip 172.16.0.2 name Gary-801 class gadc broadcast <dialback no>
dialer map ip 172.16.0.3 name Howard-761 class gadc broadcast <dialback no>
dialer-group 1
isdn switch-type basic-net3
compress stac
ppp callback accept
ppp authentication chap
ppp chap hostname Central-801
ppp chap password 7 <encrypted password>
hold-queue 75 in
!
ip classless
ip route 10.0.1.0 255.255.255.0 172.16.0.2
ip route 10.0.2.0 255.255.255.0 172.16.0.3
ip route 11.0.0.0 255.0.0.0 192.37.248.199
!
!
map-class dialer gadc
dialer callback-server username
dialer-list 1 protocol ip permit
snmp-server community public RO
snmp-server chassis-id Cisco801
snmp-server enable traps snmp
snmp-server enable traps isdn call-information
snmp-server host 192.37.248.250 traps public snmp
!
line con 0
transport input none
stopbits 1
line vty 0 4
password <password>
login
!
end
Central-801#exit
Connection closed by foreign host.
cmserver:/home/gcooper:292> exit
script done on Fri Mar 7 15:40:37 2003
