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Default Priority Settings for Selected Codepoints, Quickly Listing Non-Default Codepoint Settings

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Quality of Service (QoS): Managing Bandwidth More Effectively Differentiated Services Codepoint (DSCP) Mapping Table 5-9. The Default DSCP Policy Table DSCP Policy 802.1p Priority DSCP Policy 802.1p Priority DSCP Policy 802.1p Priority 000000 000001 000010 000011 000100 000101 000110 000111 001000 001001 001010 001011 001100 001101 001110 001111 010000 010001 010010 010011 010100 010101 No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override 1* No-override 1* No-override 2* No-override No-override No-override 0 * No-override 0 * No-override 010110 010111 011000 011001 011010 011011 011100 011101 011110 011111 100000 100001 100010 100011 100100 100101 100110 100111 101000 101001 101010 3* No-override No-override No-override 4* No-override 4* No-override 5* No-override No-override No-override 6* No-override 6* No-override 7* No-override No-override No-override No-override 101011 101100 101101 101110 101111 110000 110001 110010 110011 110100 110101 110110 110111 111000 111001 111010 111011 111100 111101 111110 111111 No-override No-override No-override 7** No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override No-override *Assured Forwarding codepoints; configured by default on the switches covered in this guide. These codepoints are configured as "No-override". **Expedited Forwarding codepoint configured by default. Default Priority Settings for Selected Codepoints In a few cases, such as 001010 and 001100, a default policy (implied by the DSCP standards for Assured-Forwarding and Expedited-Forwarding) is used. You can change the priorities for the default policies by using qos dscp-map < codepoint > priority < 0 - 7 >).(These policies are not in effect unless you have either applied the policies to a QoS classifier or configured QoS Type-ofService to be in diff-services mode.) Quickly Listing Non-Default Codepoint Settings Table 5-9 lists the switch's default codepoint/priority settings. If you change the priority of any codepoint setting to a non-default value and then execute write memory, the switch will list the non-default setting in the show config display. 5-34

Section	Page
Getting Started	15
Contents	15
Introduction	16
Conventions	16
Command Syntax Statements	16
Command Prompts	17
Screen Simulations	17
Configuration and Operation Examples	17
Keys	17
Sources for More Information	18
Getting Documentation From the Web	20
Online Help	20
Need Only a Quick Start?	22
IP Addressing	22
To Set Up and Install the Switch in Your Network	22
Physical Installation	22
Static Virtual LANs (VLANs)	24
Contents	24
Overview	26
Introduction	27
General VLAN Operation	27
Types of Static VLANs Available in the Switch	28
Terminology	29
Static VLAN Operation	30
VLAN Environments	31
VLAN Operation	32
Overlapping (Tagged) VLANs	33
Per-Port Static VLAN Configuration Options	35
VLAN Operating Rules	36
General Steps for Using VLANs	39
Multiple VLAN Considerations	40
Single Forwarding Database Operation	40
Example of an Unsupported Configuration and How To Correct It	42
Multiple Forwarding Database Operation	43
Configuring VLANs	44
Menu: Configuring Port-Based VLAN Parameters	44
CLI: Configuring Port-Based and Protocol-Based VLAN Parameters	50
Web: Viewing and Configuring VLAN Parameters	62
802.1Q VLAN Tagging	63
Special VLAN Types	68
VLAN Support and the Default VLAN	68
The Primary VLAN	68
The Secure Management VLAN	69
Voice VLANs	77
Effect of VLANs on Other Switch Features	78
Spanning Tree Operation with VLANs	78
IP Interfaces	79
VLAN MAC Address	79
Port Trunks	79
Port Monitoring	79
Jumbo Packet Support	80
VLAN Restrictions	80
GVRP	81
Contents	81
Overview	82
Introduction	83
General Operation	84
Per-Port Options for Handling GVRP “Unknown VLANs”	87
Per-Port Options for Dynamic VLAN Advertising and Joining	89
GVRP and VLAN Access Control	91
Advertisements and Dynamic Joins	91
Port-Leave From a Dynamic VLAN	91
Planning for GVRP Operation	92
Configuring GVRP On a Switch	93
Menu: Viewing and Configuring GVRP	93
CLI: Viewing and Configuring GVRP	94
Web: Viewing and Configuring GVRP	98
GVRP Operating Notes	98
Multiple Instance Spanning-Tree Operation	100
Contents	100
Overview	102
802.1s Multiple Spanning Tree Protocol (MSTP)	105
MSTP Structure	106
How MSTP Operates	108
Regions, Legacy STP and RSTP Switches, and the Common Spanning Tree (CST)	110
Terminology	112
Operating Rules	114
MSTP Compatibility with RSTP or STP	115
Configuring MSTP	116
Planning an MSTP Application	116
MSTP Configuration Overview	118
Configuring MSTP Operation Mode and Global Settings	120
Configuring MSTP Per-Port Parameters	125
Configuring MST Instance Parameters	134
Configuring MST Instance Per-Port Parameters	136
Enabling or Disabling Spanning Tree Operation	139
MSTP VLAN Configuration Enhancement	141
Displaying MSTP Statistics and Configuration	148
Displaying Global MSTP Status	149
Troubleshooting an MSTP Configuration	157
Displaying the Change History of Root Bridges	157
Displaying Debug Counters for All MST Instances	160
Displaying Debug Counters for One MST Instance	161
Displaying Debug Counters for Ports in an MST Instance	163
Field Descriptions in MSTP Debug Command Output	165
Troubleshooting MSTP Operation	168
Loop Protection	169
Configuring Loop Protection	170
Viewing Loop Protection Status	171
Quality of Service (QoS): Managing Bandwidth More Effectively	172
Contents	172
Introduction	174
Terminology	177
Overview	178
Classifiers for Prioritizing Outbound Packets	181
Preparation for Configuring QoS	182
Preserving 802.1p Priority	182
Steps for Configuring QoS on the Switch	182
Viewing the QoS Configuration	184
Using QoS Classifiers to Configure Quality of Service for Outbound Traffic	185
QoS IP Type-of-Service (ToS) Policy and Priority	186
QoS Source-Port Priority	198
Differentiated Services Codepoint (DSCP) Mapping	204
Default Priority Settings for Selected Codepoints	205
Notes on Changing a Priority Setting	207
QoS Queue Configuration	211
QoS Operating Notes and Restrictions	212
IP Multicast (IGMP) Interaction with QoS	214
Numerics	215
A	215
B	215
C	215
D	215
F	215
G	216
H	216
I	216
J	216
L	216
M	216
N	217
O	217
P	217
Q	217
R	217
S	217
T	219
U	219
V	220

Match case Limit results 1 per page

5-34

Quality of Service (QoS): Managing Bandwidth More Effectively

Differentiated Services Codepoint (DSCP) Mapping

Table 5-9.

The Default DSCP Policy Table

Default Priority Settings for Selected Codepoints

In a few cases, such as 001010 and 001100, a default policy (implied by the

DSCP standards for Assured-Forwarding and Expedited-Forwarding) is used.

You can change the priorities for the default policies by using

qos dscp-map

codepoint

> priority < 0 - 7 >)

.(These policies are not in effect unless you have

either applied the policies to a QoS classifier or configured QoS Type-of-

Service to be in

diff-services

mode.)

Quickly Listing Non-Default Codepoint Settings

Table 5-9 lists the switch’s default codepoint/priority settings. If you change

the priority of any codepoint setting to a non-default value and then execute

write memory

, the switch will list the non-default setting in the show config

display.

DSCP Policy

802.1p Priority

DSCP Policy

802.1p Priority

DSCP Policy

802.1p Priority

000000

000001

000010

000011

000100

000101

000110

000111

001000

001001

001010

001011

001100

001101

001110

001111

010000

010001

010010

010011

010100

010101

No-override

0 *

No-override

0 *

No-override

010110

010111

011000

011001

011010

011011

011100

011101

011110

011111

100000

100001

100010

100011

100100

100101

100110

100111

101000

101001

101010

No-override

101011

101100

101101

101110

101111

110000

110001

110010

110011

110100

110101

110110

110111

111000

111001

111010

111011

111100

111101

111110

111111

No-override

7**

No-override

*Assured Forwarding codepoints; configured by default on the switches covered in this guide.

These codepoints are configured as “No-override”.

**Expedited Forwarding codepoint configured by default.