User guide
Table Of Contents
- Contents
- Figures
- Tables
- Preface
- Section I
- Basic Operations
- Chapter 1
- Basic Switch Parameters
- Configuring the Switch’s Name, Location, and Contact
- Changing the Manager and Operator Passwords
- Setting the System Date and Time
- Rebooting a Switch
- Pinging a Remote System
- Returning the AT-S63 Management Software to the Factory Default Values
- Displaying the IP Address of the Local Interface
- Displaying System Information
- Chapter 2
- Port Parameters
- Chapter 3
- Enhanced Stacking
- Chapter 4
- SNMPv1 and SNMPv2c
- Chapter 5
- MAC Address Table
- Chapter 6
- Static Port Trunks
- Chapter 7
- Port Mirroring
- Section II
- Advanced Operations
- Chapter 8
- File System
- Chapter 9
- File Downloads and Uploads
- Chapter 10
- Event Logs and Syslog Client
- Chapter 11
- Classifiers
- Chapter 12
- Access Control Lists
- Chapter 13
- Class of Service
- Chapter 14
- Quality of Service
- Chapter 15
- Denial of Service Defenses
- Chapter 16
- IGMP Snooping
- Section III
- SNMPv3
- Chapter 17
- SNMPv3
- Configuring the SNMPv3 Protocol
- Enabling or Disabling SNMP Management
- Configuring the SNMPv3 User Table
- Configuring the SNMPv3 View Table
- Configuring the SNMPv3 Access Table
- Configuring the SNMPv3 SecurityToGroup Table
- Configuring the SNMPv3 Notify Table
- Configuring the SNMPv3 Target Address Table
- Configuring the SNMPv3 Target Parameters Table
- Configuring the SNMPv3 Community Table
- Displaying SNMPv3 Tables
- Section IV
- Spanning Tree Protocols
- Chapter 18
- Spanning Tree and Rapid Spanning Tree Protocols
- Chapter 19
- Multiple Spanning Tree Protocol
- Section V
- Virtual LANs
- Chapter 20
- Port-based and Tagged VLANs
- Chapter 21
- GARP VLAN Registration Protocol
- Section VI
- Port Security
- Chapter 22
- MAC Address-based Port Security
- Chapter 23
- 802.1x Port-based Network Access Control
- Section VII
- Management Security
- Chapter 24
- Encryption Keys, PKI, and SSL
- Chapter 25
- Secure Shell (SSH)
- Chapter 26
- TACACS+ and RADIUS Protocols
- Chapter 27
- Management Access Control List
- Index
Chapter 14: Quality of Service
182 Section II: Advanced Operations
Remark DSCP
Specifies whether the ingress DSCP value is overwritten. Select one of
the following options from the list:
None - Disables this function.
All - All packets are remarked.
DSCP Value
Specifies a replacement value to write into the DSCP (TOS) field of the
packets. The range is 0 to 63.
A new DSCP value can be set at all three levels: flow group, traffic
class, and policy. A DSCP value specified in a flow group overrides a
DSCP value specified at the traffic class or policy level. A DSCP value
specified at the policy level is used only if no value has been specified
at the flow group and traffic class levels.
ToS
Specifies a replacement value to write into the Type of Service (ToS)
field of IPv4 packets. The range is 0 to 7.
A ToS value can be set at all three levels: flow group, traffic class, and
policy. The ToS value in a flow group overrides the value specified at
the traffic class or policy level, while the ToS value in a traffic class
overrides the value in a policy.
Move ToS to Priority
Replaces the value in the 802.1p priority field with the value in the ToS
priority field on IPv4 packets. Options are:
yes Replaces the value in the 802.1p priority field with the value in
the ToS priority field on IPv4 packets.
no Does not replace the preexisting 802.1p priority level. This is the
default.
Move Priority to ToS
Replaces the value in the ToS priority field with the 802.1p priority field
on IPv4 packets. Options are:
yes Replaces the value in the ToS priority field with the 802.1p priority
field on IPv4 packets.
no Does not replace the ToS priority field. This is the default.
Send to Mirror Port
Copies the traffic that meets the criteria of the policy’s classifiers to a
destination mirror port. Options are:
Yes Copies the traffic that meets the criteria of the classifiers to a
destination mirror port. You must specify the destination port by
creating a port mirror. For instructions, refer to “Creating a Port
Mirror” on page 96.