[c-nsp] Bonded DSL solution

[Dean Smith]

We've trialled MLPPP across multiple ADSL. We manage both CPE and LNS (take
an L2TP service from ISP). Seems OK so far - but not yet got real world
experience.

Elsewhere we have used the "multiple parallel link" solution when it was our
only option. By default CEF switching is per session - so user will never
see throughput greater on one session than the size of one of the links.
Look into CEF per packet switching to get the full benefit.

Dean Smith
-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Rick Kunkel
Sent: 20 April 2007 17:49
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Bonded DSL solution

Hello all,

We're looking into offering "bonded" DSL lines to customer who want more
speed, but for whom something like a DS-3 is out of the question.  I'm
currently trying to figure out if Cisco has a solution for something like
this.

One thing I've considered, which isn't really true "bonding" is to have the
customer have X DSL modems plugged into X ethernet ports on a router.  
I'll assign a different /30 address to each of their X ethernet ports,
assign them a larger internal netblock, and then just create X static routes
to that netblock.  AFAIK, the traffic would round-robin between the
different X circuits.  And the customer would create X 0.0.0.0/0 routes
pointing back to me.  Sounds do-able.  I think... right?

The above seems a little low-tech though...  Are there better ways to do it?
Multi-link PPP?  Some kind Cisco proprietary bonding protocol?  The DSL
lines all terminate in a Verizon ATM DS-3 plugged into a 7206VXR NPE-G1.

Thanks!

Rick Kunkel


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