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Soho-77 ADSL IRB Routing w/DHCP but not NAT

GByoung
Level 1
Level 1

Hi;

I have a soho-77 that I am using to replace the Speed Stream ADSL Modem from the ISP.

I have a working config for DHCP and NAT but want to loose the NAT part and allow the clients on e0 to receive the Public IP addresses assigned from the ISP's DHCP server. This is so I can place my PIX Firewall behind the 77

TIA

Greg

Current configuration:

!

version 12.2

no service pad

service timestamps debug uptime

service timestamps log uptime

service password-encryption

!

hostname Router

!

no logging buffered

!

ip subnet-zero

ip name-server 66.133.170.2

ip name-server 66.133.128.138

ip dhcp excluded-address 10.10.10.1

!

ip dhcp pool CLIENT

import all

network 10.10.10.0 255.255.255.0

default-router 10.10.10.1

lease 0 2

!

bridge irb

!

!

!

interface Ethernet0

ip address 10.10.10.1 255.255

ip nat inside

!

interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/35

encapsulation aal5snap

!

dsl operating-mode auto

bridge-group 1

hold-queue 224 in

!

interface BVI1

ip address dhcp client-id Ethernet0

ip nat outside

!

ip nat inside source list 102 interface BVI1 overload

ip classless

ip route 0.0.0.0 0.0.0.0 BVI1

ip http server

!

access-list 23 permit 10.10.10.0 0.0.0.255

access-list 102 permit ip 10.10.10.0 0.0.0.255 any

bridge 1 protocol ieee

bridge 1 route ip

!

line con 0

exec-timeout 120 0

transport input none

stopbits 1

line vty 0 4

access-class 23 in

exec-timeout 120 0

login local

length 0

!

scheduler max-task-time 5000

end

1 Reply 1

carenas123
Level 5
Level 5

You need to just forward your client DHCP requests to your ISP DHCP server with "ip helper-address" interface configuration command.