Policy configuration overview
799
Programming Operations Guide
These Required treatments (or service class behaviors) for these Service classes are implemented
using nine queues and a scheduler for these queues. Queue 1 has the highest priority, referred to as
Strict Priority. Queues 2 to 9 are scheduled according to a Weighted Fair Queuing (WFQ) scheme.
The following table summarizes the mappings between service classes, queues and DSCP codes.
Packet classifiers
Filters are organized in groups. A filter group is an ordered list of filters. Each group of filters is
associated with actions that are executed when the packet matches the first filter in the group. The
filter group and the associated actions constitute a
policy
. A
classifier
is an ordered list of policies.
Filters can be added or deleted from an existing group.
The order of a filter group in a classifier is called the group precedence. The lower the order of a
group in a classifier the higher the precedence. The order in which filters in a given classifier are
evaluated depends on the precedence of the filter group in which the filter resides and, on the order
of the filter in the group. Filters in the higher-precedence groups are evaluated before filters in the
lower-precedence groups.
A classifier is associated with a role combination. Packets received from any port that has the same
role combination are classified with the same classifier. The Policy Table in Unified Manager
defines the policies of the classifier associated with a given role combination.
IP filters
IP filters are used to classify IP traffic based on the following criteria:
•
Layer 3 information, including IP source and subnet addresses, IP destination and subnet
addresses, DSCP, and IP protocols such as TCP/UDP
•
Layer 4 information, including TCP/UDP port numbers
Business Communications Manager can use 31 IP filters.
Table 243
Default Queue mapping for Business Communications Manager
NNSC
Default DSCP
Business
Communications
Manager Queue
Business
Communications
Manager Scheduler
Premium
40, 46
1
Strict Priority
Network
48, 56
2
Weighted Fair Queuing
Platinum
34, 36, 38
3
Weighted Fair Queuing
Gold
26, 28, 30
4
Weighted Fair Queuing
Silver
18, 20, 22
5
Weighted Fair Queuing
Bronze
10, 12, 14
6
Weighted Fair Queuing
Standard
0
7
Weighted Fair Queuing
Standby
2
8
Weighted Fair Queuing
N/A
N/A
9 (unused)
Weighted Fair Queuing
Summary of Contents for BCM 3.7
Page 4: ...4 Software licensing N0008589 3 3...
Page 32: ...32 Contents N0008589 3 3 W 937 Index 939...
Page 46: ...46 Tables N0008589 3 3...
Page 64: ...64 How to get help N0008589 3 3...
Page 90: ...90 Manually activating Telnet N0008589 3 3...
Page 116: ...116 Delayed system restart N0008589 3 3...
Page 194: ...194 Configuring a data module N0008589 3 3...
Page 276: ...276 Setting line telco features N0008589 3 3...
Page 310: ...310 Using COS passwords N0008589 3 3...
Page 364: ...364 Enhanced 911 E911 configuration N0008589 3 3...
Page 380: ...380 Renumbering DNs N0008589 3 3...
Page 398: ...398 Saving wizard pages on your computer N0008589 3 3...
Page 458: ...458 Voice Mail settings N0008589 3 3...
Page 488: ...488 Setting system telco features N0008589 3 3...
Page 508: ...508 Other programming that affects public networking N0008589 3 3...
Page 522: ...522 PRI networking using Call by Call services N0008589 3 3...
Page 592: ...592 Monitoring Hunt groups N0008589 3 3...
Page 636: ...636 Configuring Double Density N0008589 3 3...
Page 640: ...640 Using the Network Update Wizard N0008589 3 3...
Page 666: ...666 Importing and Exporting DHCP data N0008589 3 3...
Page 722: ...722 Restarting the router N0008589 3 3...
Page 726: ...726 Important Web Cache considerations N0008589 3 3...
Page 748: ...748 Configuring an Interface with NAT N0008589 3 3...
Page 794: ...794 IPSec N0008589 3 3...
Page 818: ...818 Configuring the Policy Agent characteristics N0008589 3 3...
Page 832: ...832 Firewall rules for Business Communications Manager with Dialup interfaces N0008589 3 3...
Page 876: ...876 ISDN Programming N0008589 3 3...
Page 1004: ...1004 Index N0008589 3 3...