Carriers need to converge their networks to a single infrastructure to reduce OpEx and support new IP-based networking services as well as traditional layer 2 transport services. In the core network, most providers have already migrated toward an IP/MPLS-based infrastructure. IP/MPLS is highly scalable and can be deployed end-to-end to accommodate the needs of any network size. In some cases, however, a service provider may not want to deploy a dynamic control plane based on IP protocols in some areas of the network. For example, the multiplication of Pseudowires (PWs) for some applications such as mobile backhaul requires IP addresses for the PWs that cannot be summarized. Thousands of such addresses carried by an Interior Gateway Protocol (IGP) couldbe problematic. A static configuration of PWs alleviates this problem. In addition, protection based on MPLS-Traffic Engineering (TE) may not be manageable in a situation where the complexity associated with a TE/Fast Reroute (FRR) setup to protect thousands of nodes/pathscould be a challenge. Cisco will offer an MPLS-TP solution that will allow static provisioning in the MPLS-TP domain. This approach will ease the transition from legacy transport technologies to an MPLS infrastructure. Cisco is committed to delivering the necessary integration between MPLS-TP and IP/MPLS so that LSPs and PWs may be provisioned and managed smoothly, end-to-end.
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