When vRtrMplsLspPathBwProtect has a value of 'true', bandwidth
protection is enabled on a LSP. LSPs that reserve bandwidth
will be used for EF services where customers need guaranteed
bandwidth. It is expected that multiple EF services will be
assigned to a single LSP. When bandwidth protection is
enabled on an LSP, each time this LSP is used for a certain
service the bandwidth allocated on that service is deducted
from the bandwidth reserved for the LSP. Once the bandwidth is
exhausted on the LSP, the ESR will provide feedback to the
provider indicating that this LSP has exhausted its resources.