Re: OT: Bridging ADSL

thanks Carlos.

On 11/02/2011 20:37, Carlos G Mendioroz wrote:
> Paul,
> "standard" ADSL runs ATM as ... framing ? It's kind of a protocol mess,
> I know.
> You don't need a dialer because you do not start a session for the link,
> as the other alternatives that get a PPP session, either PPP over ATM,
> or PPP over Ethernet (over ATM).
>
> -Carlos
>
> Paul Cocker @ 11/02/2011 17:25 -0300 dixit:
>> Hi Carlos,
>>
>> At home it's just standard ADSL, not ATM. I don't really understand
>> why you don't need the dialer interface for it.
>>
>> Afraid the other ISP is PPPoA not PPPoE
>>
>> Thanks for your input,
>> Paul
>>
>>
>>
>> On 11/02/2011 10:53, Carlos G Mendioroz wrote:
>>> Paul,
>>> at home it seems you are getting IP over ATM.
>>> But now, with the dialer interface, you might be using PPPoA or PPPoE.
>>> In the first case, I guess you are OOL.
>>> If PPPoE, you could bridge at the CPE and terminate the pppoe link
>>> directly at the ASA.
>>>
>>> http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080ab7ce9.shtml
>>>
>>>
>>> -Carlos
>>>
>>>
>>> Paul Cocker @ 10/02/2011 15:22 -0300 dixit:
>>>> Hi,
>>>>
>>>> Sort of off topic, but interesting to me :-) I wonder if anyone
>>>> has any experience of this.
>>>>
>>>> At home i like to run an ASA with the real outside address, so I
>>>> use this setup to bridge the ATM interface to the ethernet. The
>>>> ASA then just picks up an IP with DHCP. I also get a 2nd IP off the
>>>> BVI interface. My ISP doesn't require PPP.
>>>>
>>>> ----------------------------------------------
>>>> bridge irb
>>>> bridge 5 protocol ieee
>>>> bridge 5 route ip
>>>>
>>>> !
>>>> interface ATM0
>>>> no ip address
>>>> no atm ilmi-keepalive
>>>> !
>>>> interface ATM0.1 point-to-point
>>>> ip virtual-reassembly in
>>>> atm route-bridged ip
>>>> bridge-group 5
>>>> pvc 0/101
>>>> encapsulation aal5snap
>>>>
>>>> interface FastEthernet8
>>>> description link to ASA outside - bridging ATM
>>>> switchport access vlan 5
>>>>
>>>> interface Vlan5
>>>> description bridge group for internet
>>>> no ip address
>>>> bridge-group 5
>>>>
>>>> interface BVI5
>>>> ip address dhcp
>>>> ip flow ingress
>>>> ip nat outside
>>>> ip virtual-reassembly in
>>>>
>>>> ----------------------------------------------
>>>>
>>>>
>>>> That all seems to work ok, hoever I've tried to do it with another
>>>> ISP that requires a dialer interface for the ADSL, in line with
>>>> this doc from cisco which is about bridging ISDN...
>>>>
>>>> http://www.cisco.com/en/US/tech/tk801/tk379/technologies_configuration_example09186a008009457f.shtml
>>>>
>>>>
>>>> Now. I guess dhcp isn't going to work on the PC/ASA attached to
>>>> the fastethernet interface as DHCP ain't the same as PPP IP negotiate.
>>>>
>>>> Anyone see a way to make this work? Maybe if the ISP provided a
>>>> static IP?
>>>>
>>>> A bit weird I know, and more for fun than anything else. Any ideas?
>>>>
>>>> Paul
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>>
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri Feb 11 2011 - 20:44:46 ART