Policy configuration overview
797
Programming Operations Guide
Figure 219
DiffServ bandwidth brokers and nodes
DiffServ components
The DiffServ architecture is comprised of the following components:
•
Traffic conditioners — These components include classifiers, DiffServ-byte markers, shapers,
policiers and profilers. Marking is performed at network boundaries, including the edges of
the network (first hop router or switch or source host) and administrative boundaries between
networks or autonomous systems. Traffic conditions should exist at DiffServ ingress and
egress nodes. Business Communications Manager is an edge switch that supports packet
classification based on header information in layer 3 and layer 4 of the Open System
Interconnection (OSI) layering model. Business Communications Manager can mark and
re-mark IP traffic based on the policies you define.
•
Packet schedulers and queue managers — PHBs are expected to be implemented by
employing a range of queue service and/or queue management disciplines on a network node
output interface queue (for example, weighted fair queueing or drop preference queue
management). DiffServ does not require a particular discipline for queue management or
servicing to realize a particular service. All DiffServ nodes should support the packet
scheduling and queue management algorithms that are necessary to implement the required
PHB.
Business Communications Manager supports a queue service discipline that allows packets to
be serviced in an absolute priority fashion or using a weighted fair queueing scheduler. This
service discipline ensures that packets in the highest-priority queue are serviced quickly
without starving lower-priority queues.
•
Bandwidth brokers (not supported in Business Communications Manager) — Bandwidth
brokering is responsible for bandwidth allocation, QoS policy management, and flow
admission control in a given DiffServ domain. Business Communications Manager does not
support bandwidth brokering or traffic admission control.
9927EA
DiffServ domain
BB
ES
Interior
Node
EN
EBN
BB
ES
Interior
Node
EN
IBN
End-to-End QoS
Boundary
Link
Содержание BCM 3.7
Страница 1: ...Part No N0008589 3 3 December 2006 Business Communications Manager 3 7 Programming Operations Guide...
Страница 4: ...4 Software licensing N0008589 3 3...
Страница 32: ...32 Contents N0008589 3 3 W 937 Index 939...
Страница 46: ...46 Tables N0008589 3 3...
Страница 64: ...64 How to get help N0008589 3 3...
Страница 90: ...90 Manually activating Telnet N0008589 3 3...
Страница 116: ...116 Delayed system restart N0008589 3 3...
Страница 194: ...194 Configuring a data module N0008589 3 3...
Страница 276: ...276 Setting line telco features N0008589 3 3...
Страница 310: ...310 Using COS passwords N0008589 3 3...
Страница 364: ...364 Enhanced 911 E911 configuration N0008589 3 3...
Страница 380: ...380 Renumbering DNs N0008589 3 3...
Страница 398: ...398 Saving wizard pages on your computer N0008589 3 3...
Страница 458: ...458 Voice Mail settings N0008589 3 3...
Страница 488: ...488 Setting system telco features N0008589 3 3...
Страница 508: ...508 Other programming that affects public networking N0008589 3 3...
Страница 522: ...522 PRI networking using Call by Call services N0008589 3 3...
Страница 592: ...592 Monitoring Hunt groups N0008589 3 3...
Страница 636: ...636 Configuring Double Density N0008589 3 3...
Страница 640: ...640 Using the Network Update Wizard N0008589 3 3...
Страница 666: ...666 Importing and Exporting DHCP data N0008589 3 3...
Страница 722: ...722 Restarting the router N0008589 3 3...
Страница 726: ...726 Important Web Cache considerations N0008589 3 3...
Страница 748: ...748 Configuring an Interface with NAT N0008589 3 3...
Страница 794: ...794 IPSec N0008589 3 3...
Страница 818: ...818 Configuring the Policy Agent characteristics N0008589 3 3...
Страница 832: ...832 Firewall rules for Business Communications Manager with Dialup interfaces N0008589 3 3...
Страница 876: ...876 ISDN Programming N0008589 3 3...
Страница 1004: ...1004 Index N0008589 3 3...