
252 Networking Explained, Second Edition
tion control, which deals with making certain that a subnet can carry the offered traffic. It
is global in scope and involves all hosts, routers, and other factors. Note that congestion
control is not the same as flow control, which applies to point-to-point traffic between a
sender node and a receiver node.
18. How does a router determine a particular path?
The path a packet takes through a network from source to destination is a function of
routing protocols. Examples include RIP (Routing Information Protocol), RIP version 2
(RIP-2), OSPF (Open Shortest Path First), and IS-IS (Intermediate System to Intermediate ...