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Class of Service, Basic, CoS Configuration

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Web Management User Guide Class of Service The Class of Service (CoS) queueing feature lets you directly configure certain aspects of switch queueing. This provides the desired QoS behavior for different types of network traffic when the complexities of DiffServ are not required. The priority of a packet arriving at an interface can be used to steer the packet to the appropriate outbound CoS queue through a mapping table. CoS queue characteristics that affect queue mapping, such as minimum guaranteed bandwidth, or transmission rate shaping are user-configurable at the queue (or port) level. Eight queues per port are supported. From the Class of Service link under the QoS tab, you can access the following pages: • Basic on page 197 • Advanced on page 199 Basic From the Basic link, you can access the following pages: • CoS Configuration on page 197 CoS Configuration To display the CoS Configuration page, click QoS CoS  Basic  CoS Configuration. Use the CoS Configuration page to set the class of service trust mode of an interface. Each port in the switch can be configured to trust one of the packet fields (802.1p or IP DSCP), or to not trust any packet's priority designation (untrusted mode). If the port is set to a trusted mode, it uses a mapping table appropriate for the trusted field being used. This mapping table indicates the CoS queue to which the packet should be forwarded on the appropriate egress port(s). Of course, the trusted field must exist in the packet for the mapping table to be of any use, so there are default actions performed when this is not the case. These actions involve directing the packet to a specific CoS level configured for the ingress port as a whole, based on the existing port default priority as mapped to a traffic class by the current 802.1p mapping table. Alternatively, when a port is configured as untrusted, it does not trust any incoming packet priority designation and uses the port default priority value instead. All packets arriving at the 197

Section	Page
ProSafe® Managed Switch	1
Contents	3
1. Getting Started	8
Switch Management Interface	8
Web Access	8
Understanding the User Interfaces	9
Using the Web Interface	9
Using SNMP	14
Interface Naming Convention	14
2. Configuring System Information	16
Management	16
System Information	16
Switch Statistics	21
System CPU Status	24
Loopback Interface	26
Network Interface	27
Time	31
DNS	38
SDM Template Preference	40
Services	42
DHCP Server	42
DHCP Relay	51
DHCP L2 Relay	52
UDP Relay	55
PoE	57
Basic	57
Advanced	59
SNMP	64
SNMPV1/V2	64
SNMP V3	70
LLDP	71
LLDP	72
LLDP-MED	78
ISDP	87
Basic	87
Advanced	88
Timer Schedule	93
Timer Global Configuration	93
Timer Schedule Configuration	94
3. Configuring Switching Information	96
VLANs	96
Basic	97
Advanced	99
Spanning Tree Protocol	112
Basic	112
Advanced	115
Multicast	127
MFDB	127
IGMP Snooping	129
MLD Snooping	140
MVR Configuration	147
Basic	147
Advanced	148
Address Table	152
Basic	152
Advanced	154
Ports	158
Port Configuration	158
Port Description	160
Link Aggregation Groups	161
LAG Configuration	162
LAG Membership	163
4. Routing	166
Routing Table	166
Basic	167
Advanced	169
IP	171
Basic	171
Advanced	178
VLAN	186
VLAN Routing Wizard	187
VLAN Routing Configuration	188
ARP	189
Basic	189
Advanced	190
Router Discovery	193
5. Configuring Quality of Service	196
Class of Service	197
Basic	197
Advanced	199
Differentiated Services	204
DiffServ Wizard	205
Auto VoIP Configuration	207
Basic	207
Advanced	209
6. Managing Device Security	224
Management Security Settings	224
Local User	224
Enable Password Configuration	227
Line Password Configuration	227
RADIUS	228
Configuring TACACS+	234
Authentication List Configuration	236
Login Sessions	240
Configuring Management Access	241
HTTP	241
HTTPS	243
SSH	246
Telnet	249
Console Port	251
Denial of Service	252
Port Authentication	253
Basic	254
Advanced	255
Traffic Control	262
MAC Filter	263
Port Security	265
Private Group	270
Protected Ports Configuration	272
Storm Control	273
Control	275
DHCP Snooping	275
IP Source Guard	281
Dynamic ARP Inspection	283
Configuring Access Control Lists	288
ACL Wizard	288
Basic	289
Advanced	294
7. Monitoring the System	308
Ports	308
Port Statistics	309
Port Detailed Statistics	311
EAP Statistics	317
Cable Test	320
Logs	321
Buffered Logs	322
Command Log Configuration	324
Console Log Configuration	324
SysLog Configuration	325
Trap Logs	326
Event Logs	328
Persistent Logs	329
Port Mirroring	330
Multiple Port Mirroring	330
sFlow	332
Basic	332
Advanced	333
8. Maintenance	336
Save Configuration	336
Save Configuration	336
Auto Install Configuration	337
Reset	337
Device Reboot	338
Factory Default	338
Password Reset	339
Upload File From Switch	339
File Upload	340
HTTP File Upload	341
USB File Upload	342
Download File To Switch	342
File Download	343
HTTP File Download	344
USB File Download	346
File Management	347
Copy	347
Dual Image Configuration	348
Troubleshooting	349
Ping IPv4	349
Ping IPv6	350
Traceroute IPv4	351
Traceroute IPv6	352
9. Help	354
Online Help	354
Support	354
User Guide	355
A. Default Settings	357
B. Configuration Examples	361
Virtual Local Area Networks (VLANs)	361
VLAN Example Configuration	362
Access Control Lists (ACLs)	363
MAC ACL Example Configuration	364
Standard IP ACL Example Configuration	365
Differentiated Services (DiffServ)	366
Class	366
DiffServ Traffic Classes	367
Creating Policies	367
DiffServ Example Configuration	368
802.1X	370
802.1X Example Configuration	371
MSTP	372
MSTP Example Configuration	374
C. Notification of Compliance	378

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197

Web Management User Guide

Class of Service

The Class of Service (CoS) queueing feature lets you directly configure certain aspects of

switch queueing. This provides the desired QoS behavior for different types of network traffic

when the complexities of DiffServ are not required. The priority of a packet arriving at an

interface can be used to steer the packet to the appropriate outbound CoS queue through a

mapping table. CoS queue characteristics that affect queue mapping, such as minimum

guaranteed bandwidth, or transmission rate shaping are user-configurable at the queue (or

port) level.

Eight queues per port are supported.

From the Class of Service link under the QoS tab, you can access the following pages:

•

Basic

on page

197

•

Advanced

on page

199

Basic

From the Basic link, you can access the following pages:

•

CoS Configuration

on page

197

CoS Configuration

To display the CoS Configuration page, click

QoS



CoS



Basic



CoS Configuration

Use the CoS Configuration page to set the class of service trust mode of an interface. Each

port in the switch can be configured to trust one of the packet fields (802.1p or IP DSCP), or

to not trust any packet’s priority designation (untrusted mode). If the port is set to a trusted

mode, it uses a mapping table appropriate for the trusted field being used. This mapping

table indicates the CoS queue to which the packet should be forwarded on the appropriate

egress port(s). Of course, the trusted field must exist in the packet for the mapping table to be

of any use, so there are default actions performed when this is not the case. These actions

involve directing the packet to a specific CoS level configured for the ingress port as a whole,

based on the existing port default priority as mapped to a traffic class by the current 802.1p

mapping table.

Alternatively, when a port is configured as untrusted, it does not trust any incoming packet

priority designation and uses the port default priority value instead. All packets arriving at the