Protocol-independent multicast sparse mode(PIM-SM) is one of the most widely used multicast routing protocols.
协议无关组播-稀疏模式是目前应用最广泛的组播路由协议之一。
2
Such questions are out of scope of the protocol-independent URI syntax, it's up to the HTTP protocol to provide content negotiation as a solution.
这种问题已经超出了协议无关的URI语法的范围，这得由HTTP协议提供内容协商作为解决方案。
3
This effective method has some advantages such as protocol-independent, negligible extra traffic, convenience and being able to estimate individual user performance.