Hi All,
I am using four ISDN ports on the 2600 series router to dial to internet using multilink PPP.
The problem is that the router of late jst hangs although the dialer interfaces shows line/protocol up.But i can't ping the dns servers or any public ip address.( The physical layer connectivity is maintained but nothing works at the network layer )
One more point i have noticed is that whenever the dialer dials it gets assigned with multiple public ip's. Could this be a routing issue at the ISP end ????
The temporary workaround is to issue a clear int dialer command and then a clear ip route * command.
Then the connection is up and fine for a couple of hrs.
Can anyone advice how to solve this issue ???
Below is the working config in the router
sh run
Building configuration...
Current configuration : 1859 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname caledonian
!
logging queue-limit 100
enable secret 5 $1$G7wv$UVIrfr/JAHFLOvPNNFRwK.
!
ip subnet-zero
!
!
ip name-server
ip name-server
ip name-server
ip name-server
!
isdn switch-type basic-net3
isdn voice-call-failure 0
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.26 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface BRI1/0
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap callin
ppp multilink
!
interface BRI1/1
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap callin
ppp multilink
!
interface BRI1/2
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap callin
ppp multilink
!
interface BRI1/3
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap callin
ppp multilink
!
interface Dialer0
ip address negotiated
ip nat outside
encapsulation ppp
no ip route-cache
no ip mroute-cache
load-interval 30
dialer pool 1
dialer idle-timeout 1800
dialer string 1311
dialer load-threshold 1 either
dialer-group 1
no fair-queue
ppp authentication chap callin
ppp chap hostname xxxx
ppp chap password 7 ggg
ppp multilink
ppp timeout multilink link add 5
!
ip nat inside source list 100 interface Dialer0 overload
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
!
access-list 100 permit ip any any
dialer-list 1 protocol ip permit
!
line con 0
line aux 0
line vty 0 4
password telnet
login
!
!
