twork Route reflector (RR), 19, 32, 265-266, 287 Index Routing functions, 17-18 Segment routing (SR), 19, 283 RPC, see Remote procedure calls benefits, 285 RR, see Route reflector explicit routing, 284-285 RSVP, see Resource Reservation Protocol faster restoration using segment routing, 285 RSVP-TE, see Resource Reservation Protocol for Traffic packet forwarding under normal conditions, 283-284 Engineering segment routing vs. RSVP-TE, 285-286 RTCP, see Realtime media control protocol Self-backhaul, 247 RTP, see Real-time transport protocol Self-optimizing networks (SONs), 160, 162-165, 349 Semi-supervised techniques, 149 SendMessage function, 95 Server, 52 SaaS, see Software as a service hypervisor, 207 SAE gateway, see Service architecture evolution gateway Service SAEGW, see System Architecture Evolution Gateway abstraction layer, 215 Safe policies, 343-345 assist mechanism, 5-6 SAI, see Switch Abstraction Interface catalog, 306 SAN, see Storage-area network chaining, 37-38, 58, 168, 183 SBCs, see Session border controllers coordination and instantiation, 58 SB FW, see Southbound FW creation, 306 SC, see Service controller decomposition, 63 Scalability, 64-65, 316-317, 323 design methodology, 307 at VNF level, 315 images, 116 Scale out, 383 logic, 5 Scaling management centers, 334 design, 323 measurements, 365 monitoring, 323 monitoring, 58, 340 multipath and distributed VNF designs, 41-42 and network measurements, 368, 369 NFV, 40 reliability, 69 resiliency, 324 Service-level agreements (SLAs), 34, 93, 317, 364, 398 scalability, 323 VNF, 380-381 services, 58 Service-oriented architecture (SOA), 33 triggers, 382-383 Service-prover-based IP VPN service, 252 vPE example for VNF-specific resiliency design, Service-provider-based IP VPN service, 252 42-44 Service architecture evolution gateway (SAE gateway), 29 Scaling out/in, see Horizontal scaling Service centralization and continuity (SCC-AS), 312 Scaling up/down, see Vertical scaling Service controller (SC), 99 SCC-AS, see Service centralization and continuity 