Basically, this router connects to the Internet, and a private corporate network. It brings up links correctly, and routes traffic correctly, even NAT seems to work just fine.
My problem is that when the dialer idle-timeout expires, it hangs up. Interesting traffic (while being routed properly) does not reset this timer and keep the link up. So it goes up and down and up and down... in this case, every 300 secs.
It is an 804, with 12.2(6) IOS. I was running 12.0 but upgraded just in case this was a bug. I am completely open to not using route-maps if that is the problem, however I was unable to get it to work without them when I initially set this up--with open access lists it seemed unable to figure out where to route traffic (at one point it was using the Dialer1 internet address to try to access the Dialer2 private network... that didn't work well at all).
I'm stumped.
Here's the config.
homenet_isdn#sh run
Building configuration...
Current configuration : 2830 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname homenet_isdn
!
boot system flash c800-y6-mw.122-6.bin
boot system flash
enable secret 5 **********************
enable password ****
!
!
ip subnet-zero
!
isdn switch-type basic-ni
!
!
!
interface Ethernet0
ip address 10.0.0.1 255.255.255.0
ip access-group 110 in
ip nat inside
no ip route-cache
fair-queue
no cdp enable
!
interface BRI0
no ip address
ip nat outside
encapsulation ppp
no ip route-cache
dialer pool-member 1
isdn switch-type basic-ni
isdn spid1 *********
isdn spid2 *********
isdn incoming-voice modem
no cdp enable
ppp authentication pap callin
ppp multilink
!
interface Dialer1
description Internet - Verizon
ip address negotiated
ip nat outside
encapsulation ppp
no ip route-cache
dialer pool 1
dialer idle-timeout 300 either
dialer string ****************
dialer load-threshold 120 either
dialer-group 1
fair-queue
no cdp enable
ppp authentication pap callin
ppp pap sent-username ******* password 7 ***************
ppp multilink
!
interface Dialer2
description *************
ip address negotiated
ip nat outside
encapsulation ppp
no ip route-cache
shutdown
dialer pool 1
dialer idle-timeout 300
dialer string ***************
dialer load-threshold 120 either
dialer-group 2
fair-queue
no cdp enable
ppp authentication chap callin
ppp chap hostname ntdomain\username
ppp chap password 7 **************
ppp multilink
!
ip nat inside source route-map private interface Dialer2 overload
ip nat inside source route-map internet interface Dialer1 overload
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 167.230.0.0 255.255.0.0 Dialer2
ip route 172.21.0.0 255.255.0.0 Dialer2
ip route 192.168.1.0 255.255.255.0 Null0
!
logging trap debugging
logging facility syslog
logging 10.0.0.3
access-list 3 permit 10.0.0.0 0.0.0.255
access-list 101 deny ip 10.0.0.0 0.0.0.255 172.21.0.0 0.0.255.255
access-list 101 deny ip 10.0.0.0 0.0.0.255 167.230.0.0 0.0.255.255
access-list 101 permit ip 10.0.0.0 0.0.0.255 any
access-list 102 permit ip 10.0.0.0 0.0.0.255 172.21.0.0 0.0.255.255
access-list 102 permit ip 10.0.0.0 0.0.0.255 167.230.0.0 0.0.255.255
access-list 110 deny udp any any eq netbios-ns
access-list 110 deny udp any any eq netbios-dgm
access-list 110 deny udp any any eq netbios-ss
access-list 110 permit ip any any
dialer-list 1 protocol ip list 101
dialer-list 2 protocol ip list 102
no cdp run
route-map internet permit 10
match ip address 101
match interface Dialer1
!
route-map private permit 10
match ip address 102
match interface Dialer2
!
!
line con 0
stopbits 1
line vty 0 4
access-class 3 in
password **********
login
!
!
end
homenet_isdn#
