02-05-2007 08:29 AM - edited 03-03-2019 03:37 PM
Good afertnoon All !
I have on FastEthernet0/dialer1 a DSL Modem attached, I have write a Route and a NAT, connection to my ISP ok.
On the BRI0/dialer0, I have write a Route and a NAT, connection ok too. (for test I deleted the NAT and Route for Ether0)
After i have add in interface FastEthernet0 : backup dialer0 and backup delay 10 10.
When I manualy disconnect Fastethernet0, dialer0 come up, dial and make the connection, but no acces outside is possible.
I have try to put two NAT with same adress, but no success.
How to make the NAT and route correctly for this case?
Thanks in advance.
==========================
My config : CISCO 1712 Router
version 12.3
!
isdn switch-type basic-net3
!
interface BRI0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
isdn spid1 xxx
isdn spid2 xxx
no cdp enable
!
interface FastEthernet0
description $ETH-WAN$
no ip address
backup delay 10 10
backup interface Dialer0
duplex auto
speed auto
pppoe enable
pppoe-client dial-pool-number 2
no cdp enable
!
interface Vlan1
description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$
ip address 10.10.10.1 255.255.255.248
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1412
!
interface Dialer0
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer string xxx
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname xxx
ppp chap password 0 xxx
ppp pap sent-username xxx password 0 xxx
!
interface Dialer1
ip address negotiated
ip mtu 1452
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 2
dialer-group 2
no cdp enable
ppp authentication chap pap callin
ppp chap hostname xxx
ppp chap password 0 xxx
ppp pap sent-username xxx password 0 xxx
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 0.0.0.0 0.0.0.0 Dialer0
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
ip nat pool Test 10.10.10.0 10.10.10.7 netmask 255.255.255.248
ip nat inside source list 1 interface Dialer0 overload
ip nat inside source list 100 interface Dialer1 overload
!
!
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 10.10.10.0 0.0.0.7
access-list 100 remark NAT for BRI
access-list 100 remark SDM_ACL Category=2
access-list 100 permit ip 10.10.10.0 0.0.0.7 any
dialer-list 1 protocol ip permit
dialer-list 2 protocol ip permit
no cdp run
=============================
02-05-2007 08:37 PM
Hi
Instead of applying backup interface and backup delay command under the fast ethernet interface can you apply the same under interface dialer 1 ?
Do remove the commands from fast ethernet interface after adding under interface dialer 1..
Since primarily you are routing the traffic via dialer 1 you need to redefine the traffic routing via dialer 0 when the main link goes down..
regds
02-06-2007 12:43 AM
Hi
Thanks for your fast reply. !
No, it's no possible to assign the backup on a dialer. You can only backup a physical interface on to a dialer or on another physical, like i see...
I think i have "only" a NAT or Routing configuration problem, to say when the backup line is up (isdn) witch route to take...
I hope some more idea are comming..
Thanks
02-06-2007 12:54 AM
Hi
Can you remove the backup commands under the fast ethernet interface and redefine your static route with some admin distance attached to it ?
Also have you ever seen whether your dialer interface goes down once you get disconnected from your SP through the primary link ?
If the dialer goes down automatically then the route which you have pointed towards the primary dialer interface will go off and the traffic will flow through the secondary dialer using the floating static route..
regds
02-06-2007 03:29 AM
Hi
I have remove the backup commands under fastethernet0 and make routing like this :
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 0.0.0.0 0.0.0.0 Dialer0 10
!
ip nat pool Internal 10.10.10.0 10.10.10.7 netmask 255.255.255.248
ip nat inside source list 1 interface Dialer0 overload
ip nat inside source list 100 interface Dialer1 overload
!
When the fastethernet come up, the bri0:1 come down, but no success to have access externaly. only if I delete : ip nat inside source list 1 interface Dialer0 overload , come my connection working....
02-08-2007 05:37 AM
Good afternoon !
No body has a ideas !
I cant think i am alone to wisch make this !
Help meeee...
Thanks in advance
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