Routing Prerequisites; Figure 41: Virtual Private Routed Network - Alcatel-Lucent 7705 Service Manual

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Routing Prerequisites

RFC 2547bis requires the following features:

Tunneling protocol requirements are as follows:

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multiprotocol extensions

extended BGP community support

BGP capability negotiation

parameters defined in RFC 2918, BGP Route Refresh, and RFC 2796, Route

a 4-byte autonomous system (AS) number

RFC 2547bis, BGP/MPLS VPNs, recommends implementing Label Distribution

Protocol (LDP) to set up a full mesh of LSPs based on the IGP

MPLS RSVP-TE tunnels can be used instead of LDP

alternatively, Generic Routing Encapsulation (GRE) tunnels can also be used

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