The value of vRtrMplsLspAutoBWAdjDNPercent specifies minimum
difference between the current bandwidth reservation of the
LSP and the (measured) maximum average data rate, expressed
as a percentage of the current bandwidth, for decreasing
the bandwidth of the LSP. At the adjust interval expiry, if
the measured bandwidth falls below the current bandwidth by
the value of vRtrMplsLspAutoBWAdjDNPercent it can cause
a re-signaling attempt for the LSP
When the value of vRtrMplsLspAutoBWAdjDNPercent is 0 it means
that this threshold check is always true for any measured
bandwidth less than current bandwidth