Hi,
A couple comments:
A L3VPN customer could use MPLS over GRE from their CE devices. The SP
would play no part in the MPLS.
A prerequisite for signaling across the SP would be for routing
information in the core to be exposed (ie. typically joining the core
network's IGP), and this would not be directly possible. There are
ways to make the routes available from master's inet.0 into the VRF
but this would be involved.
You can do a few things to offer MPLS to customers.
Have customers do MPLS over GRE
Service Provider creates VPLS domain and lets CE's do their own MPLS
mesh
Implement Carrier of Carrier (CoC)
Implement Interprovider VPN
See: https://www.juniper.net/techpubs/software/junos/junos91/swconfig-vpns/interprovider-and-carrier-of-carriers.html
#part-cofc
Carrier of Carrier / Interprovider VPNS are designed to address a
scaling issue; so I would say that they scale pretty well. CoC will
not require the customers' customer routes to be installed into their
RIBs.
Kind regards,
Truman
On 20/05/2009, at 8:37 AM, Bourgeois, Jake (Jake) wrote:
Hello,
Can juniper provisioned Layer3 VPNS be used by its customers to create
their own VPLS or E-Pipe from their CPE to other CPE's (assume OSPF
CE-PE)?
I see MSO's (Multi-Service Operators in case this is not as common a
term as I think) use the vendor I work for to offer Ethernet services
via VPLS and e-pipes all the time, since these are Ethernet based the
MSO is unaware of the traffic type within the payload so could be
several types including MPLS labels. How about if the MSO were say a
t640 and supplying an l3vpn?
I have heard of possible extension of LDP into an l3vpn but I am not
sure how that works or of it is true, and if RSVP is supported also.
Does anyone have any document explaining how this works?
How about scaling limitations if in fact it works, but causes the
number
of VRF's to be limited etc. I know scaling isn't handed out freely,
but
hey I am trying to leverage a juniper core, not replace it :)
Thanks and Regards,
Jake
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