Static routes are applicable to networks with simple structures. Properly configuring and using static routes can improve network performance and guarantee the required bandwidth for important applications.
On an MPLS network with primary and secondary LSPs established by label switched routers (LSRs) using static routes, association between LDP and static routes prevents MPLS traffic from being interrupted during traffic switching between the primary and secondary LSPs.
With IPv4 static route detection, if a link through which an IPv4 static route travels fails, a rapid link switchover is performed, preventing lengthy service interruptions.
Fast reroute (FRR) is applicable to services that are sensitive to packet delay and packet loss. FRR can be configured for IPv4 static routes to protect traffic using backup links.