MPLS automatic bandwidth allocation and dynamic label switched path (LSP) count sizing

Automatic bandwidth allocation allows an MPLS tunnel to automatically adjust its bandwidth allocation based on the volume of traffic flowing through the tunnel. You can configure an LSP with minimal bandwidth, and rely on this feature to dynamically adjust the bandwidth allocation based on current traffic patterns. Dynamic LSP count sizing provides an ingress router with the capability of acquiring as much network bandwidth as possible by creating parallel LSPs dynamically. The bandwidth adjustments do not interrupt traffic flow through the tunnel.