Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 824)

800 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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6PE over MPLS
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FIGURE 92 6PE over MPLS
6PE over MPLS operation
The 6PE router forwards IPv6 traffic between remote sites of a customer's network using the
existing IPv4-signaled Label Switched Path (LSP).
Creating routes in an MPLS domain
Figure 93 describes how the IPv6 routes are created in an MPLS domain. A CE router maintains the
connection to the customer's network and is configured within the network to send or receive IPv6
packets. The IPv6 routes that are available through the CE router are then made available to the
6PE router using RIPng, OSPFv3, Exterior Border Gateway Protocol (EBGP), IS-ISv6, or a static route.
The 6PE router connected to the MPLS domain through one or more interfaces advertises the
available IPv6 routes across the MPLS domain to other 6PE routers using MP-BGP. OSPF is used as
the Interior Gateway Protocol (IGP) within the MPLS domain to provide connectivity. The 6PE router
obtains an LSP required to switch traffic to the other 6PE routers using the Label Distribution
Protocol (LDP) and Resource Reservation Protocol (RSVP). The network is now populated with all
the IPv6 routes required to forward IPv6 packets between the customer's networks.