[c-nsp] Transparent LAN over Layer3

[Paul Stewart]

Thanks...

Yes, we own the end to end network however it's a routed network in those
segments...
router-->router-->router-->switch-->switch-->router-->router-->router-->rout
er specifically...;)

If we could hand them off a few VLAN's we would just do that and not even
use Q-in-Q unless we really needed to... but basically I'm looking for
layer2 transport via layer3 devices...  and there's no option for MPLS in
this setup...

Take care,

Paul


-----Original Message-----
From: Michael K. Smith [mailto:mksmith at adhost.com] 
Sent: September 30, 2008 10:16 PM
To: Paul Stewart; 'cisco-nsp'
Subject: Re: [c-nsp] Transparent LAN over Layer3

Hello Paul:

If you control the L2 transport all the way from each of the clients' sites
then you could just us Q-in-Q trunking.  The next level up would be VPLS at
Layer 2 with isolated L2 domains on the same fabric.  Finally. MPLS at Layer
3.

What portion of network do you control.  Can you "own" the whole segment
from customer device to customer device?  In that case Q-in-Q is the
cheapest by far.

Regards,

Mike


On 9/30/08 4:52 PM, "Paul Stewart" <paul at paulstewart.org> wrote:

> Hi there.
> 
>  
> 
> We've had a few customer requests recently for TLS (transparent LAN
service)
> at some of our sites where we are connected via routers.  Without changing
> out half our network infrastructure in these areas to accommodate, I'm
> looking for a way to utilize Cisco 1800,2800,3800 series boxes to offer
TLS.
> 
>  
> 
> L2tpv3 is what keeps coming to mind but I'm still researching this and
going
> to lab test. is this the best solution?
> 
>  
> 
> One customer wants three "VLAN's" from their location to another city
where
> we have a POP - another customer wants to take all their branches
locations
> and have it as all one flat network.  both of these particular customer
> locations we have Cisco 2821's today for example..
> 
>  
> 
> Obviously MPLS comes to mind for some of this but that's not feasible
today
> - hopefully in future..
> 
>  
> 
> Thanks for any input.
> 
>  
> 
> Paul
> 
>  
> 
>  
> 
>  
> 
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