[c-nsp] combining multiple dsl lines

[John van Oppen]

We use per-packet all the time, in our experience the lines tend to all
degrade together since the degradation seems to be in the building trunk
or off somewhere in the ATM cloud on the provider (qwest in this
case)...    We do also run eBGP with private ASNs to all customers who
have multiple links as well to detect failed lines.


That being said, it sounded like the original requester did not have
control of both ends of the line which makes most real solutions a bit
moot.


John van Oppen
Spectrum Networks LLC
206.973.8302 (Direct)
206.973.8300 (main office)

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Ben Steele
Sent: Wednesday, July 23, 2008 4:47 PM
To: Wayne Lee; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] combining multiple dsl lines

You're still going to need something on the CPE side to detect a failed 
route unless you plan on running a routing protocol to your customers, I

won't bother going into the Linux side of things seeing as this is a
Cisco 
list but in my experience per-packet is only good if the lines are
really 
well matched or you don't plan on running any/much real-time traffic
over 
it, ie voip, unfortunately with the nature of dsl and its vulnerability
to 
weather and various other nasties in your last mile copper run things
just 
have to many variables for me to consider it a reliable inplementation
for 
someone planning to use it with per-packet and real time traffic where
out 
of order packets can become a problem.

Good to hear you are having success with it though.

>
> We have used cef per packet with great success on PPPoA DSL links here
> in the UK, we use radius to add/remove the extra routes when a
> connection bounces. The CPE is a linux box which is not running any
> NAT. Works for us
>
>
> Wayne
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