1841 ADSL with Cellular Backup

Unanswered Question
May 26th, 2009
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Hi Cisco gurus, I need someone to look at my config. Would really appreciate your help.


I put together this config from various sources. The ADSL connects, I get a public IP, when i do a #sh ip int brief - I can ping the internet from the router. The problem is NAT does not seem to work, my computer can't surf the net and there are no entries in #show ip nat translations


When I pull the phone line out the Cellular interface comes up automatically as expected, gets a public IP and starts NAT'ing. I can surf the net no worries (entries seen in NAT table). Bizarre.


My config (important parts):



ip name-server 4.2.2.2


multilink bundle-name authenticated

chat-script internet "" "ATDT*98*3#" TIMEOUT 30 CONNECT

!

!

interface FastEthernet0/0

description $ES_LAN$$FW_INSIDE$

ip address 192.168.0.1 255.255.255.0

no ip redirects

no ip unreachables

no ip proxy-arp

ip nat inside

ip virtual-reassembly

duplex auto

speed auto

!

interface ATM0/0/0

backup interface Cellular0/1/0

no ip address

no ip redirects

no ip unreachables

no ip proxy-arp

ip flow ingress

no atm ilmi-keepalive

dsl bitswap both

pvc 8/35

encapsulation aal5snap

protocol ppp dialer

dialer pool-member 2

!

!

interface Cellular0/1/0

ip address negotiated

ip nat outside

ip virtual-reassembly

encapsulation ppp

no ip mroute-cache

dialer in-band

dialer idle-timeout 0

dialer string internet

dialer-group 1

async mode interactive

no ppp lcp fast-start

ppp chap hostname dummy

ppp chap password dummy

ppp ipcp dns request

!

interface Dialer2

description $FW_OUTSIDE$

mtu 1492

ip address negotiated

no ip redirects

no ip unreachables

no ip proxy-arp

ip nat outside

ip virtual-reassembly

encapsulation ppp

ip tcp adjust-mss 1452

load-interval 30

dialer pool 2

no cdp enable

ppp authentication chap callin

ppp chap hostname *******

ppp chap password ******

!

ip local policy route-map track-primary-if

ip forward-protocol nd

ip route 0.0.0.0 0.0.0.0 Dialer2 track 234

ip route 0.0.0.0 0.0.0.0 Cellular0/1/0 254

!

!

no ip http server

ip nat inside source route-map nat2cell interface Cellular0/1/0 overload

ip nat inside source route-map nat2dsl interface Dialer2 overload

!

ip sla 1

icmp-echo 203.23.236.9 source-interface Dialer2

ip sla schedule 1 life forever start-time now

access-list 1 permit any

access-list 2 permit 192.168.0.0 0.0.0.255

access-list 3 permit any

access-list 101 permit ip 192.168.0.0 0.0.0.255 any

access-list 102 permit icmp any host 203.23.236.9

dialer-list 1 protocol ip list 1

dialer-list 2 protocol ip permit

route-map track-primary-if permit 10

match ip address 102

set interface Dialer2

!

route-map nat2dsl permit 10

match ip address 101

match interface Dialer2

!

route-map nat2cell permit 10

match ip address 101

match interface Cellular0/1/0

!

!

line 0/1/0

exec-timeout 0 0

script dialer internet

modem InOut

no exec

transport input all

speed 384000



Thanks for the help

Chris

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