01-15-2003 08:50 AM - edited 03-02-2019 04:13 AM
Hi,
Currently I am working on project for school. In this project I have create a frame relay network with ISDN as backup with a 1700 (server) and a 2500 (client) router. I have frame relay up and running but the ISDN doesn't work.
If I disconnect the frame relay the ISDN kicks in. The routers say that they are connected to each other but there is no data transfer what so ever over ISDN. And pinging doesn't work. This is also my first time I worked with a Cisco router. So I would really apriciate any help from someone. I'll post the configs of the routers.
Server (1700):
Building configuration...
Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname kleinerouter
!
!
username groterouter password 0 isdn
!
!
!
!
memory-size iomem 25
ip subnet-zero
!
isdn switch-type basic-ni
!
interface 172.19.0.0 255..255.255.0
!
!
interface Serial0
backup delay 10 30
backup interface Dialer1
no ip address
encapsulation frame-relay
no keepalive
shutdown
no fair-queue
!
interface Serial0.100 point-to-point
ip address 192.0.0.6 255.255.255.0
frame-relay interface-dlci 100
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 10
no ip route-cache
load-interval 30
no keepalive
shutdown
isdn switch-type basic-ni
ppp authentication chap
!
interface FastEthernet0
ip address 124.0.0.6 255.255.255.252
shutdown
speed auto
!
interface Dialer1
ip address 142.0.0.6 255.255.0.0
encapsulation ppp
dialer remote-name groterouter
dialer pool 10
dialer idle-timeout 900
dialer string 3099596
dialer max-call 4096
dialer-group 1
ppp authentication chap
!
router ospf 10
log-adjacency-changes
network 172.19.0.0 0.0.0.255 area 0
network 124.0.0.0 0.0.0.255 area 0
network 142.0.0.0 0.0.0.255 area 0
network 192.0.0.0 0.0.0.255 area 0
!
router rip
network 124.0.0.0
network 142.0.0.0
network 192.0.0.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 124.0.0.1
no ip http server
!
dialer-list 1 protocol ip permit
!
line con 0
exec-timeout 0 0
privilege level 15
transport input none
line aux 0
transport input all
line vty 0 4
exec-timeout 0 0
login
!
end
Client (2500):
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname groterouter
!
!
username kleinerouter password 0 isdn
!
!
ip subnet-zero
!
isdn switch-type basic-ni
!
!
process-max-time 200
!
interface Loopback0
ip address 10.8.8.1 255.255.255.0
!
interface Ethernet0
ip address 110.0.0.5 255.255.255.252
no ip directed-broadcast
shutdown
!
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
no keepalive
shutdown
no fair-queue
clockrate 148000
cdp enable
!
interface Serial0.100 point-to-point
ip address 192.0.0.5 255.255.255.0
no ip directed-broadcast
frame-relay interface-dlci 100
!
interface BRI0
no ip address
no ip directed-broadcast
encapsulation ppp
dialer pool 20
shutdown
dialer-group 1
isdn switch-type basic-ni
ppp authentication chap
!
interface Dialer1
ip address 142.0.0.5 255.255.0.0
no ip directed-broadcast
encapsulation ppp
dialer remote-name kleinerouter
dialer pool 20
dialer idle-timeout 900
dialer max-call 4096
dialer-group 1
ppp authentication chap
!
router ospf 10
network 10.8.8.0 0.0.0.255 area 0
network 110.0.0.0 0.0.0.255 area 0
network 142.0.0.0 0.0.0.255 area 0
network 192.0.0.0 0.0.0.255 area 0
!
router rip
network 110.0.0.0
network 142.0.0.0
network 192.0.0.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.200.17.1
no ip http server
!
dialer-list 1 protocol ip permit
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end
01-15-2003 09:43 AM
On a client 2500 router named "groterouter" have a config mistake.
1)Bri0 interface is in shutdown mode..which may not be a issue as you might be testing it.
2)Bri0 should have "dialer pool-member 20" command instead of "dialer pool 20".
3)ISDN SPIDs are not configured on any router.
pl. correct that.
Here is the url which has "isdn backup using dialer profiles" explained in detail with sample config and troubleshooting.
http://www.cisco.com/warp/public/129/bri-back-dp.html
So if it still dosen't work, we need following debug on server router kleinerouter when isdn line receives the call.
debug dialer
debug ppp nego
debug ppp auth
debug isdn q931
01-17-2003 04:25 AM
Thx it is working now. But now the problem is that when ISDN backup is up it should disconect if it is idle or there is no datatransfer but now it stays connected.
Configs:
server (1700):
Building configuration...
Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname kleinerouter
!
!
username groterouter password 0 isdn
!
!
!
!
memory-size iomem 25
ip subnet-zero
!
isdn switch-type basic-ni
!
interface 172.19.0.0 255..255.255.0
!
!
interface Serial0
backup delay 10 30
backup interface Dialer1
no ip address
encapsulation frame-relay
no keepalive
no fair-queue
!
interface Serial0.100 point-to-point
ip address 192.0.0.6 255.255.255.0
frame-relay interface-dlci 100
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 10
no ip route-cache
load-interval 30
no keepalive
isdn switch-type basic-ni
ppp authentication chap
!
interface FastEthernet0
ip address 124.0.0.6 255.255.255.252
speed auto
!
interface Dialer1
ip address 142.0.0.6 255.255.0.0
encapsulation ppp
dialer remote-name groterouter
dialer pool 10
dialer idle-timeout 900
dialer string 3099596
dialer max-call 4096
dialer-group 1
ppp authentication chap
!
router ospf 10
log-adjacency-changes
network 172.19.0.0 0.0.0.255 area 0
network 124.0.0.0 0.0.0.255 area 0
network 142.0.0.0 0.0.0.255 area 0
network 192.0.0.0 0.0.0.255 area 0
!
ip classless
ip route 0.0.0.0 0.0.0.0 124.0.0.1
no ip http server
!
dialer-list 1 protocol ip permit
!
line con 0
exec-timeout 0 0
privilege level 15
transport input none
line aux 0
transport input all
line vty 0 4
exec-timeout 0 0
login
!
end
Client (2500):
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname groterouter
!
!
username kleinerouter password 0 isdn
!
!
ip subnet-zero
!
isdn switch-type basic-ni
!
!
process-max-time 200
!
interface Loopback0
ip address 10.8.8.1 255.255.255.0
!
interface Ethernet0
ip address 110.0.0.5 255.255.255.252
no ip directed-broadcast
!
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
no keepalive
no fair-queue
clockrate 148000
cdp enable
!
interface Serial0.100 point-to-point
ip address 192.0.0.5 255.255.255.0
no ip directed-broadcast
frame-relay interface-dlci 100
!
interface BRI0
no ip address
no ip directed-broadcast
encapsulation ppp
dialer pool-member 20
dialer-group 1
isdn switch-type basic-ni
ppp authentication chap
!
interface Dialer1
ip address 142.0.0.5 255.255.0.0
no ip directed-broadcast
encapsulation ppp
dialer remote-name kleinerouter
dialer pool 20
dialer idle-timeout 900
dialer max-call 4096
dialer-group 1
ppp authentication chap
!
router ospf 10
network 10.8.8.0 0.0.0.255 area 0
network 110.0.0.0 0.0.0.255 area 0
network 142.0.0.0 0.0.0.255 area 0
network 192.0.0.0 0.0.0.255 area 0
default-information originate
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.200.17.1
no ip http server
!
dialer-list 1 protocol ip permit
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end
01-20-2003 09:51 AM
You are running OSPF on the ISDN line. That will produce a hello packet every 10 seconds, and your idle timeout is 900 seconds. Your dialer list permits all IP packets, including OSPF, so the line stays up.
Mark
01-20-2003 10:25 AM
Since you have "backup delay 10 30" configured, the backup isdn line should be disconnected (dialer 1 interface) after 30 secs once the primary line come up. So you need to wait till 30 secs to have dialer 1 interface go back to standby mode. Pl. verify that how loag the dialer interface stay connected after primary line comes up.
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