Network recovery is critical capability that service providers must provide. It can be accomplished in four ways. Span, or local, protection is the most common recovery method. Another common method is path restoration which is accomplished end-to-end. Some service providers apply both span protection and path restoration in different parts of their networks in a "hybrid" configuration. Another more recent alternative is a feature in Multiprotocol Label Switching (MPLS) called "Fast Reroute." This praxis addresses several fundamental problems related to each of the above network recovery...
Network recovery is critical capability that service providers must provide. It can be accomplished in four ways. Span, or local, protection is the mo...