MPLS VPN for an ISP (Full Routing required on CEs)
A good case study... Thinking about the Service Provider point of view...
How difficult would be to offer an MPLS VPN to interconnect various ISP sites. Considering that ISP wants to have Full Routing (internet routes) in the site routers and could have Internet links to this same SP (and others), what would be the best solution...
Re: MPLS VPN for an ISP (Full Routing required on CEs)
This can be done if you consider that you don't have to advertise all routes
on CE-PE (CE being ISP that will be interconnected and PE being carrier who
provide interconnection to that ISP).CE should advertise only internal routes to that ISP ( loopback , internal links etc).External routes (IE Internet routes , ISP Customer routes) will be exchanged between ISP IBGP neighbors . Search for Carrier Supporting Carrier feature on CCO .2547bis also explain this type of interconnection.
This document is an early notification of a behaviour change that will be introduced in IOS XR release 6.5.
IOS XR configuration principles relevant for this article are:
On router platforms all interfaces must be by defaul...
With XR 4.2.0 the ASR9000 is releasing a new line of hardware models. This amongst others is the RSP440, the next generation RSP with faster switch fabric along with Typhoon based Linecards, the next generation network processor.
The Cisco EPN system incorporates a network architecture designed to consolidate multiples services on a single Multiprotocol Label Switching (MPLS) transport network. This network is designed primarily based on Application ...