In particular, carriers often want to offer guaranteed sub-second protection
against network failures and differentiated SLAs (for example, tiered levels of service
with different latency and packet loss metrics).
EoMPLS enables providers to offer carrier-class Ethernet services to their customers
on a platform that also enables the provider to take advantage of statistical gain to
reduce the bandwidth provisioned through their network. Typically, Ethernet links are
loaded to less than 20 percent, making statistical gain an essential component of any
large Carrier Ethernet deployment.
Fast and Scalable Convergence The use of the IP/MPLS control plane for failure detection
in MPLS enables much faster and more scalable convergence than OAM-based
mechanisms because failure of a physical link (whether detected at the physical layer
or using BFD) immediately triggers the control plane to propagate failure information
through the MPLS network. LSP failures are notified to all LERs, each of which is then
able to repair its failed LSPs. Each LSP may carry large numbers of EoMPLS services,
each of which is repaired automatically as a result of LSP repair.
Pages:
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034