E2E Service Restoration

https://www.ethernetacademy.net/index.php/20091106214/Ethernet-Academy-Articles/end-to-end-service-restoration.html

Good loadbalancing for MPLS

FAT-PW -----> L2VPN(PW)
RFC6391 http://tools.ietf.org/html/rfc6391
LDPでLabel交換する時にFlow Labelを

Entropy Label -----> L3VPN, L2VPN(PW), VPLS(Any to any L2VPN)

RFC6790 http://tools.ietf.org/html/rfc6790
BGPでCapabilityを、LDP/RSVPでELIとEntropy Labelを交換

どちらも追加のLabelはHashingに使い、Forwardingには使わない。