The value of vRtrMplsS2lSubLspOperBandwidth indicates the amount of
bandwidth in mega-bits per seconds (Mbps) that has been reserved
for the operational P2MP S2L sub LSP.
When make-before-break functionality for the P2MP LSP is enabled and
if the S2L sub LSP bandwidth is changed, the resources allocated to the
existing P2MP LSP paths will not be released until a new S2L sub LSP
with the new bandwidth settings has been established. While a new S2L
sub LSP is being signaled, the administrative value and the operational
values of the S2L sub LSP bandwidth may differ. The value of
vRtrMplsS2lSubLspOperBandwidth specifies the bandwidth requirements for
the new P2MP S2L sub LSP trying to be established whereas the value of
vRtrMplsS2lSubLspOperBandwidth specifies the bandwidth reserved
for the existing P2MP S2L sub LSP.