of the IP packet to declare that the data in this packet is important and should be given
priority. This basically means that some of the traffic, depending on the IP Precedence
field, can be treated with more urgency than other packets. This also involves queuing
algorithms such as custom and priority queuing.
one end of the network to the other for an application (RSVP protocol, for example). This
means that along the path from end to end, routers need to reserve buffer space, queuing
disciplines to ensure that specific traffic gets a specific service level.
them with the maximum amount of delay:
configure prioritization, and the ports that TCP uses to distinguish traffic. The end of this
section discusses the use of Cisco IOS queuing algorithms--priority queuing, custom queuing,
and weighted fair queuing--to provide differentiated services and meet service-level
requirements.
identify the traffic. For that reason, DLSw+ supports opening four separate TCP connections
and then places traffic based on priority directly from the input queue into one of these four
pipes. Then, at the output interface, traffic is prioritized among these four TCP connections
based on its TCP port number.
a priority keyword must be used on a remote-peer statement.
frames, peer keepalives, and capabilities exchange.