“…Others deal with mechanisms to modify bandwidth reservations during the lifetime of a connection on an on-off basis ( [39], [103], [104], [118], [129], [141], [142], [145], [148]). Proposals to do this on a multilevel basis have also been done ( [10], [32], [33], [91], [98], [120], [123], [147]). Most of these papers contain also some performance analyses of proposals.…”