
6-1
Chapter 6
Using DLSw Prioritization
This chapter provides guidelines for implementing Data Link Switching (DLSw)
TCP-level Prioritization. Following an overview of DLSw protocol prioritization,
later sections describe how to use Configuration Manager to
• Configure priority queues that apply to all configured or unconfigured DLSw
peers (default queues)
• Configure priority queues that apply to individual configured DLSw peers
(peer-specific queues)
• Create outbound traffic filters that process DLSw traffic into priority queues
Protocol Prioritization Overview
Outbound traffic filters act on packets that the router sends out a synchronous
interface to a wide area network. Outbound traffic filter actions let you direct
traffic into delivery queues of varying precedence. Applying a priority queue
action to an outbound filter is called protocol prioritization. These outbound filters
are often called priority filters.
As a router operates, network traffic from a variety of sources converges at an
interface. Without protocol prioritization, the router transmits packets in a first-in/
first-out (FIFO) order. Site Manager’s Protocol Prioritization features allow you to
instruct the router to use a different transmit order for specified ranges of packets
on an individual interface.
Note: The steps in this chapter assume that DLSw is already configured on an
interface and that the Peer Table is complete. For information about
configuring a circuit with DLSw and setting the slot, peer, and SAP
parameters, refer to the earlier chapters in this manual.
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