PPVPN draft-ouldbrahim-vpn-vr-03.txt

["Hamid Ould-Brahim" <hbrahim@nortelnetworks.com>]

NAME OF I-D:
 
   http://www.ietf.org/internet-drafts/draft-ouldbrahim-vpn-vr-03.txt
 

SUMMARY

  This draft describes a network based VPN architecture using virtual 
   routers. The VPN service is built based on the virtual router (VR) 
   concept, which has exactly the same mechanisms as a physical router, 
   and therefore inherits all existing mechanisms and tools for 
   configuration, operation, accounting, and maintenance. Within a VPN 
   domain, an instance of routing is used to distribute VPN 
   reachability information among VR routers. Any routing protocol can 
   be used, and no VPN-related modifications or extensions are needed 
   to the routing protocol for achieving VPN reachability. Virtual 
   routers can be deployed in different VPN configurations, direct VR 
   to VR connectivity through layer-2 or by aggregating multiple VRs 
   into a single VR combined with IP or MPLS based tunnels. This 
   architecture accommodates different backbone deployment scenarios, 
   e.g. where the VPN service provider owns the backbone, and where the 
   VPN service provider obtains backbone service from one or more other 
   service providers.  
   

RELATED DOCUMENTS

  none

WHERE DOES IT FIT IN THE PICTURE OF THE SUB-IP WORK

  Applications         +-------+  +-------+        (new) Hour glass
  that use CCAMP: \    | TE-WG |  | PPVPN |  ...           /
                   \   +-------+  +-------+               /
                    \     +----------------------+       /
                     \    |         CCAMP        |      /
                      \   |-----------+----------|     /  
                      /   |   C       |    M   --|------ IGP LSA ext
                     /    | control   | measure  |     \  
                    /     +----------------------+      \
  Technologies to  / +----+ +----+ +----+ +----+ +----+  \
  measure/control:/  |MPLS| |OPT | |RPR | |ATM | | FR |...\
                     +----+ +----+ +----+ +----+ +----+

this draft fits in the PPVPN working group.

WHY IS IT TARGETED AT THIS WG

  The PPVPN is already focusing on approaches based on virtual router
  technology. In the charter:

  "The working group is expected to consider at least three 
   specific approaches including BGP-VPNs (e.g. RFC 2547), virtual routers 
   and port-based VPNs"  

JUSTIFICATION

  The PPVPN working group is already considering in their
  charter the virtual router technology. And this draft is
  used as an example for virtual router approach (by the PPVPN
  community).