[cisco-nas] DSL info

Aaron Leonard Aaron at Cisco.COM
Wed Aug 25 13:00:46 EDT 2004


Hi John,

The typical DSL aggregation scenario involves using ATM rather
than Frame Relay from the DSLAM to the aggregation router.

It would typically be up to you rather than the telco, I think, to decide 
which encapsulation method is to be used between the CPE and
your aggregation router - PPPoA, PPPoE or RBE (RFC-1483 bridging.)

Sample Configurations for Cisco 7200 Broadband Aggregation
http://www.cisco.com/warp/public/794/7200_bdaggreg.html

This gives you an overview.  As far as what aggregation router
to use ... I suppose if your 5350s have spare CPU and memory,
they could be used ... assuming that their software supports
the DSL aggregation feature you want (I don't know offhand.)

More reading:

http://www.cisco.com/pcgi-bin/Support/PSP/psp_view.pl?p=Internetworking:DSL
(this looks like more CPE-side stuff)

Configuring Broadband Access
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fwan_c/wcfppp.htm

There must be some stuff on CCO that puts this all together with
AAA but I'm not finding it right now.  (I don't actually cover DSL myself.)

Regards,

Aaron

---

> Hi all,
> 	We are currently using AS5350's to provide Dial-up internet
> access. If we were going to resell DSL what is the best choice in
> equipment? The local telco will manage the dslam. We will purchase a frame
> relay connection into their cloud(?). So our customers will reach us
> through the Frame relay. Can we implement AAA? How? The telco mentioned
> using a PVC? Any pointers would be greatly appreciated.

> --
> Thank You,
> John McKinney
> WNC ONLINE

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