A regional ISP is running MPLS TE. These tunnels are configured manually using paths. Which technology centralizes the traffic engineering decisions to reduce operational complexity?

BGP Link State (BGP-LS) redistributes network topology and TE link attributes to external controllers for visibility purposes, but does not itself make or automate bandwidth reservation decisions for the tunnels.

DiffServ-TE extends MPLS TE to support multiple QoS traffic classes within TE tunnels, but it does not automate or centralize bandwidth reservation or path computation decisions.

TE autobandwidth continuously monitors the traffic load on each MPLS TE tunnel and periodically resizes the tunnel's RSVP bandwidth reservation to match observed usage, removing the operational burden of manually calculating and reconfiguring bandwidth on each individually configured path. This automated adjustment centralizes the bandwidth management decision within the tunnel itself and scales across large MPLS TE deployments without per-tunnel operator intervention.

Shared Risk Link Group (SRLG) groups links that share a common physical failure domain to support path diversity calculations, and has no role in automating or centralizing bandwidth management decisions.