[cisco-bba] Best way to configure Cisco 1720, 2x WIC1-ADSL for MLPPP in the U.K.

[Mark Johnson]

At 10:13 AM 3/24/2004 +0000, Steve Handscomb wrote:
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>Good day to you.
>
>I m in the U.K. and our ISP has just started offering the ability to bind 
>ADSL lines much like ISDN.
>
>So far, I ve got the dial up working fine the router dials up both lines 
>and bundles them together.

Actually, your config may not be correct; support for ATM MPPP on
Multiple VCs was added with 12.2(13)T:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t13/ftatmmlt.htm

>I m then wanting to pass all data back to an IPCOP firewall (I have one 
>single fixed IP, with a further subnet of 8 IP s)
>
>I enclose my current running-config for info, but it s the routing im 
>getting stuck with;  The basics are, the cisco should simply bridge 
>between the net and the firewall, but it is required to do the channel 
>bonding, so it (the cisco) must control the dial up / bonding of channels.
>
>Loosely, I ve given the cisco router (FastEthernet0) an IP of 192.168.0.1, 
>and the IPCOP red NIC (net side) 192.168.0.3
>
>When I ping from IPCOP the router LEDs pulse as you would expect, but no 
>replies are going back to the IPCOP box.

Certainly a ping to 192.168.0.1 should succeed.  Any other network address 
that the IPCOP pings
will go out the dialer interface, and so whether or not the ping succeeds 
depends on
the ISP/destination having a route back to 192.168.0.0.  Since this is a 
private address, it would
seem to me that you need NAT, using the ISP provided address as your 
translation.

mark


>Any help would be appreciated.
>
>Regards
>
>Steve Handscomb.
>
>CISCO 1720 with 2x WIC1-ADSL
>
>Setup
>
>The Cisco router FastEthernet0 is set to 192.168.0.1
>
>The firewall red NIC is set to 192.168.0.3
>
>(Although it s irrelevant at the moment, the green NIC is set to 
>192.168.1.1, and the orange NIC (DMZ) will be 192.168.2.1)
>
>As well as a single fixed IP x.y.94.16, I ve also another subnet 
>x.y.213.144/29 (144 through 151, of which 144 and 151 are unuseable, and 
>145 is the router address)
>
>All IP s should pass to IPCOP, which will then sort them as I need them.
>
>The config I ve put together thus far is as follows:
>
>ip name-server 213.208.106.212
>ip name-server 213.208.106.213
>!
>interface ATM0
>  no ip address
>  no ip mroute-cache
>  no atm ilmi-keepalive
>  pvc 0/38
>   encapsulation aal5mux ppp dialer
>   dialer pool-member 1
>  !
>  bundle-enable
>  dsl operating-mode auto
>  no shut
>!
>interface FastEthernet0
>  ip address 192.168.0.1 255.255.255.0
>  speed auto
>  full-duplex
>  no shut
>!
>interface ATM0
>  no ip address
>  no ip mroute-cache
>  no atm ilmi-keepalive
>  pvc 0/38
>   encapsulation aal5mux ppp dialer
>   dialer pool-member 1
>  !
>  bundle-enable
>  dsl operating-mode auto
>  no shut
>!
>interface Dialer0
>  ip address negotiated
>  encapsulation ppp
>  dialer pool 1
>  ppp reliable-link
>  ppp authentication chap callin
>  ppp chap hostname <><><><>
>  ppp chap password <><><><>
>  ppp multilink
>!
>ip classless
>ip route 0.0.0.0 0.0.0.0 Dialer0
>ip route 192.168.0.0 255.255.255.0 FastEthernet0
>ip route 81.6.213.144 255.255.255.248 FastEthernet0