Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu wrote:
... The QoS field in the header suffers from the same basic
issues as source-routing of packets - they try to modify the global handling
of packets with insufficient knowledge of global conditions.
Your text mainly refers to IntServ about which I make no comment. But the
diffserv
header field (formerly known as TOS in IPv4, known as Traffic Class in IPv6)
is explicitly *not* global - it is meaningful per domain, and only makes
sense in a domain that has been appropriately configured. See RFC 2474, 2475
and 3086 for more.
Brian