[c-nsp] IS-IS as PE-CE protocol

Robert Raszuk robert at raszuk.net
Thu Mar 21 11:50:50 EDT 2019


Yes - the examples are there on the net for most BGP resistant customers
and non managed CPEs  ... But as others already said all biggest SPs which
are still offering L3VPNs are only doing BGP and static.

On Thu, Mar 21, 2019 at 4:45 PM Victor Sudakov <vas at mpeks.tomsk.su> wrote:

> Mark Tinka wrote:
> >
> > > Because the customer network is all IS-IS ?
> > > What would be "not shooting myself in the foot" in this case?
> >
> > A protocol designed to speak between 2 different autonomous systems.
> >
> > If that is not an option, not using a routing protocol is also a good
> > idea, i.e., static routing.
>
> Well, the Internet is full of examples and recommendations of an IGP
> (most often OSPF) being used between PE and CE, so it must be common
> practice. In fact, OSPF even has special enhancements for this very
> purpose.
>
> >
> > You're not my immediate competitor, so I'll advise you not to run an IGP
> > with a customer.
>
> Again, it seems a common practice to run an IGP with a customer to
> import the customer's routes into the provider's MPLS network.
>
> --
> Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> 2:5005/49 at fidonet http://vas.tomsk.ru/
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