Cisco 107 ADSL- bridging mode?

0r8it · ‎07-05-2006

Hi there all,

I've a Cisco 107 with an ADSL WIC, a PIX501 sitting behind it. My ISP has only given me a single public IP. The only place I want to do NAT is in my PIX. The PIX will do PPPoE quite happily.

Has anyone a config for running the 107 as a pure bridge, forwarding all traffic to another device, so I can get my public IP to the PIX's outside via PPPoE?

Much obliged,

Gary

devang_etcom · ‎07-05-2006

yes you can do that... i had configure it in my office... but i am having ADSL router from some other company not of cisco... i am having ISP connection to ADSL router provided by the ISP... and that router connected with my CISCO 3000 series VPN concentrator... and by bridging i am able to configure the global ip address to my 3000 public interface...

i think this bridging follow the RFC 1483 ...

hope this will help you

rate this post if it helps

regards

Devang

DouglasScott99 · ‎07-07-2006

I have this working but I quite frankly don't

understand it. Verizon ADSL in NYC.

! 837 config -- ADSL bridging

!

! In the working production config we have a private

! internal address on Ethernet 0

! and not "bridge-group 1"

! I have changed that for you.

!

! I HAVE NO IDEA IF THIS WILL WORK OR NOT:_)

!

bridge irb

!

interface Ethernet0

no ip address

bridge-group 1

!

interface ATM0

no ip address

load-interval 30

no atm ilmi-keepalive

bundle-enable

dsl operating-mode auto

!

interface ATM0.1 point-to-point

bridge-group 1

pvc 0/35

encapsulation aal5snap

!

interface BVI1

desc management address if you want one

ip address x.x.x.x 255.255.255.0

!

bridge 1 protocol ieee

bridge 1 route ip

0r8it · ‎07-08-2006

Thanks to you both. Douglas, I often find myself doing things that work for no apparent reason!!! so I'll try out this config. ;)

all the best,

Gary