Hi, I am having some problems getting Terminal Service and FTP traffic to work over an ISDN link. I am using Dailer Watch to back up a T1 lease line. When I drop the T1 and ISDN dials up and routes are learn via OSPF. ICMP seem to work fine so does traffic from a non natted subnet on the remote side (R2 and R4). I think it is a natting issues but the natting config is the same as the one on the T1 router. Everything works fine over the T1.
R3 and R4 are running IOS 12.2(6f)
R1 and R2 are running IOS 12.2(1)
Here are snap shots of the four routers. SPID and Telephone are remove for security. R1 and R2 are connected via T1 circuit and R3 and R4 are connected via the ISDN. R3 and R1 are connected via ethernet and R2 and R4 are connected via ethernet.
R1-------------------------------------------------------
interface Ethernet0/0
ip address 10.100.131.253 255.255.255.248
no ip redirects
ip accounting output-packets
ip ospf priority 100
full-duplex
standby 100 priority 150 preempt
standby 100 ip 10.100.131.252
standby 100 track Se0/0 70
!
interface Serial0/0
description
ip address 10.100.131.245 255.255.255.252
ip accounting output-packets
no ip mroute-cache
no fair-queue
service-module t1 remote-alarm-enable
!
interface Serial0/1
description
no ip address
ip accounting output-packets
encapsulation frame-relay
!
router ospf 100
log-adjacency-changes
redistribute static subnets
network 10.100.131.0 0.0.0.255 area 0
!
ip classless
ip route 10.100.126.0 255.255.255.0 10.100.131.249
ip route 10.100.128.0 255.255.255.0 10.100.131.249
ip route 10.100.130.0 255.255.255.0 10.100.131.249
ip route 10.109.0.0 255.255.0.0 10.100.131.249
ip route 10.199.6.0 255.255.255.0 10.100.131.249
access-list 101 permit ip any any
-----------------------------------------------------------------------------------------
R2
interface Ethernet0/0
ip address 10.100.131.237 255.255.255.248
no ip redirects
ip accounting output-packets
ip nat inside
half-duplex
standby 200 priority 150 preempt
standby 200 ip 10.100.131.236
standby 200 track Se0/0 70
!
interface Serial0/0
ip address 10.100.131.246 255.255.255.252
ip accounting output-packets
ip nat outside
no ip mroute-cache
no fair-queue
service-module t1 remote-alarm-enable
!
router ospf 100
log-adjacency-changes
redistribute static subnets
network 10.100.131.0 0.0.0.255 area 0
!
ip nat pool XYZ 172.100.126.2 172.100.126.254 netmask 255.255.255.0
ip nat inside source list 10 pool XYZ
ip classless
ip route 32.0.0.0 255.0.0.0 10.100.131.234
ip route 170.108.0.0 255.255.0.0 10.100.131.234
ip route 170.108.4.0 255.255.255.0 10.100.131.234
ip route 172.22.0.0 255.255.0.0 10.100.131.234
ip route 172.100.126.0 255.255.255.0 10.100.131.234
ip route 207.128.0.0 255.252.0.0 10.100.131.234
ip http server
!
access-list 10 permit 207.128.0.0 0.3.255.255
----------------------------------------------------------------------------------------------
R3
interface Ethernet0/0
ip address 10.100.131.254 255.255.255.248
ip accounting output-packets
half-duplex
standby 100 ip 10.100.131.252
standby 100 preempt
!
interface BRI0/0
ip address 10.100.131.241 255.255.255.252
ip accounting output-packets
encapsulation ppp
ip ospf demand-circuit
dialer idle-timeout 600
dialer map ip 10.100.131.242 name R4 broadcast
dialer load-threshold 1 outbound
dialer-group 1
isdn switch-type basic-ni
isdn spid1 xxxxxxxxxxxxxxxx
isdn spid2 xxxxxxxxxxxxxxxx
ppp authentication chap
ppp multilink
!
router ospf 100
log-adjacency-changes
redistribute static subnets
network 10.100.131.0 0.0.0.255 area 0
!
ip classless
ip route 10.100.126.0 255.255.255.0 10.100.131.249
ip route 10.100.128.0 255.255.255.0 10.100.131.249
ip route 10.100.130.0 255.255.255.0 10.100.131.249
ip route 10.109.0.0 255.255.0.0 10.100.131.249
ip route 10.199.6.0 255.255.255.0 10.100.131.249
ip route 32.0.0.0 255.0.0.0 10.100.131.242 200
no ip http server
ip ospf name-lookup
ip pim bidir-enable
!
access-list 10 permit 10.100.131.242 log
dialer-list 1 protocol ip permit
---------------------------------------------------------------------------------------------------------
R4
interface Ethernet0/0
ip address 10.100.131.238 255.255.255.248
ip accounting output-packets
ip nat inside
half-duplex
standby 200 ip 10.100.131.236
standby 200 preempt
!
interface BRI0/0
ip address 10.100.131.242 255.255.255.252
ip accounting output-packets
ip nat outside
encapsulation ppp
ip ospf demand-circuit
dialer idle-timeout 300
dialer watch-disable 15
dialer map ip 10.100.131.241 broadcast xxxxxxxxxx
dialer map ip 10.100.128.0 broadcast xxxxxxxxxxxx
dialer load-threshold 1 outbound
dialer watch-group 8
dialer-group 1
isdn switch-type basic-ni
isdn spid1 xxxxxxxxxxxxxxxx
isdn spid2 xxxxxxxxxxxxxxxx
ppp authentication chap
ppp multilink
!
router ospf 100
log-adjacency-changes
redistribute static subnets
network 10.100.131.0 0.0.0.255 area 0
!
ip nat pool XYZ 172.100.126.2 172.100.126.254 netmask 255.255.255.0
ip nat inside source list 10 pool XYZ
ip classless
ip route 32.0.0.0 255.0.0.0 10.100.131.234
ip route 170.108.0.0 255.255.0.0 10.100.131.234
ip route 170.108.4.0 255.255.255.0 10.100.131.234
ip route 172.22.0.0 255.255.0.0 10.100.131.234
ip route 172.100.126.0 255.255.255.0 10.100.131.234
ip route 207.128.0.0 255.252.0.0 10.100.131.234
access-list 10 permit 207.128.0.0 0.3.255.255
dialer watch-list 8 ip 10.100.126.0 255.255.255.0
dialer watch-list 8 ip 10.100.128.0 255.255.255.0
dialer watch-list 8 ip 10.100.130.0 255.255.255.0
dialer-list 1 protocol ip permit
