Bridged ADSL config

[DManigo]

I have a Zyxel 645r fully bridged and connected to a Cisco 1751-v4.

I replaced the DSU/CSU WIC with an ethernet WIC. Here is a short description so far.

ip subnet-zero
ip dhcp exclude-address 192.168.2.1
ip dhcp exclude-address 192.168.2.5
!
ip dhcp pool 5thborocs
network 192.168.2.0 255.255.255.0
domain-name 5thborocs.com
default-router 192.168.2.1
dns-server 63.162.197.69 208.33.159.39
!
!
interface ethernet0/0 (connected to bridge)
ip address 63.162.201.72 255.255.255.0
ip nat outside
full-duplex
!
interface fastethernet0/0 (temp connection to 1 pc)
ip address 192.168.2.1 255.255.255.0
ip nat inside
full-duplex
!
ip http server
ip classless
!
ip route 0.0.0.0 0.0.0.0 63.162.201.1
!
access-list 1 permit 192.168.2.0 0.0.0.255

The single pc is able to IP ping the core router and in reverse as the pc has LAN IP 192.168.2.2... I am also able to IP ping (199.2.252.10/Sprint DNS server) from the router's ethernet0/0 interface, but not from the pc (fastethernet0/0 interface). I also noticed with the ethernet0/0 interface, I don't see an option to configure the pvc 8(0)/35,the encapsulation (aal5snap)or the dsl operating-mode.
What am I not seeing?

 

[plshlpme]

if the adsl is bridged then you will not need to do anything with the pvc, or pppoe...
it would appear to be an ethernet connection on your router..
bascially your missing some nat statements because your lan range is not allowed to be routed to the internet.

sorry i don't have the exact code on hand right now..
but it will be something like

ip nat inside source list 1 interface eth0 overload

list 1 being an access-list that you will decide who is allowed to use the nat...
eth0 being your outside (wan) interface)...

 

[DManigo]

Thanks for replying.

I blew away the config on the C1751. This is the current config:
Current configuration : 1325 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
memory-size iomem 15
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
voice-card 1
!
voice-card 2
!
ip subnet-zero
!
!no ip dhcp use vrf connected
!
ip dhcp pool cisco
network 192.168.2.0 255.255.255.0
domain-name 5thborocs.com
default-router 192.168.1.1
dns-server 63.162.197.69 208.33.159.39
!
ip cef
!
interface Ethernet0/0
description WAN Interface
ip address 63.162.201.72 255.255.255.0
ip nat inside
ip virtual-reassembly
full-duplex
!
interface FastEthernet0/0
description LAN Interface
ip address 192.168.2.1 255.255.255.0
ip nat inside
ip virtual-reassembly
speed auto
full-duplex
!
ip classless
ip route 0.0.0.0 0.0.0.0 63.162.201.1
ip http server
no ip http secure-server
!
ip nat inside source list 1 interface Ethernet0/0 overload
ip nat inside source static tcp 192.168.2.2 80 63.162.201.72 80 extendable
!
access-list 1 permit 192.168.2.0 0.0.0.255
!
control-plane
!
voice-port 1/0
!
voice-port 1/1
!
voice-port 2/0
!
voice-port 2/1
!
line con 0
line aux 0
line vty 0 4
!
end

Sending 5, 100-byte ICMP Echos to 199.2.252.10,
uccess rate is 100 percent (5/5), round-trip min/avg/max = 48/48/52 ms
************************************************************
As you can see I am able to IP ping an external DNS server.
Looking at my old C827 router. I remebered I have BVI 1 configured as follows:

Interface BVI1
ip address 63.162.201.72 255.255.255.0
IP nat outside
!
ip nat inside source list 1 interface BVI1 overlaod
!
bridge 1 protocol ieee
bridge 1 route ip

Should I configure the BVI interface ?

 

[plshlpme]

the 827 was an adsl modem/router combined correct? now you have a modem plugged into the 1751

so when the 827 had the phone cable plugged into it.. it took the ATM DSL off the line and bridged it onto the ethernet hence the BVI...

you will not need that with the new setup...

your ethernet needs to have ip nat outside... instead of what you have now "ip nat inside"

i suspect its a typo... but your fa0/0 should be inside... and your e0/0 should be outside.....