My company has a small network of a few thousand customers and some internal 
stuff.  We also buy VPN services from a large tier 1 provider.  I can tell you 
from experience that the guidelines depend on your carrier and what business 
relationship you have with them.  (read $$$)

Sent from my iPhone

On Feb 27, 2011, at 11:55 AM, danger will <[email protected]> wrote:

> Hi Keegan
> 
> Ok thanks was intersted mostly to see how people who run vpn mpls networks do 
> regarding this.
> 
> --- On Sun, 2/27/11, Keegan Holley <[email protected]> wrote:
> 
> From: Keegan Holley <[email protected]>
> Subject: Re: [c-nsp] bgp communities over vpn mpls
> To: "danger will" <[email protected]>
> Cc: [email protected]
> Date: Sunday, February 27, 2011, 6:44 PM
> 
> It depends on the provider.  Extended communities are also used in vpn/vrf 
> route filters so honoring any community already seen on a customer route is 
> dangerous.  It's easier to remove all customer communities at the edge so 
> some providers probably do that as.  Others may allow specific values for 
> specific reasons the same way internet providers will allow customers to 
> prepend and increase local-pref by sending communities.  The best thing is to 
> consult your specific provider.
> 
> 
> 
> On Sun, Feb 27, 2011 at 10:34 AM, danger will <[email protected]> wrote:
> Hello List,
> 
> Lets say the customer wants to use his own bgp communities over a vpn mpls 
> service.
> Prefixes from one site are market with some communities , and those 
> communities have an action at another site. The question is are these 
> communities maintained over the vpn mpls service or is there any reason for 
> them to be deleted by the mpls provider ?
> 
> Thank you very much
> 
> 
> 
> 
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> 
> 
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