Viewing the QoS Configuration

Prerequisites

Use the following procedure to open the Configuration tab.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.


--End--

Variable definitions

The following table outlines the parameters of the Configuration tab.

QoS Agent Configuration tab parameters

Variable Value
QosOperMode Specifies whether the QoS Agent support is enabled or disabled.
NVRamCommitDelay Specifies the maximum time before nonvolatile QoS data is written to NVRAM.
ResetToPartialDefaults Resets QoS condigurations to deafult ecept for quque-set and buffering type.
ResetToDefaults Resets all policy information to factory default values.
QueueCfg Determines the queue set that is associated with all egress interfaces by default.
BufferingCaps Determines the method through which buffering resources are allocated to ports sharing a pool of buffers.
The value of this attribute determines the level of buffer sharing or over-allocation that can take place among ports sharing a buffer pool. Higher levels of over-allocation increase the likelihood (under heavy load) of a relatively few number of ports consuming all the buffers in a pool, causing packets to be dropped on other ports due to buffer starvation.
UBPSupportLevel Sets the level of User Based Policy support.
TrackStatistics Specifies the type of statistics tracking.
AQApplicationMode Specifies the behavior of Auto Qos application mode.
TrustedProcessingMode Indicates the QoS trusted processing mode status. The trusted processing mode parameter is available only for a mixed stack of ERS 5500 series switches.
TrustedProcessingMode Trusted processing mode: partialDscpMapping (less QoS filters used) or fullDscpMapping (64 QoS filters used)
DappEnable DoS Attack Prevention Package for ERS 5600 switches only: disable (default), enableWithoutStatusTracking (enabled without logging messages), enableWithStatusTracking (enabled with logging messages).
DappMinTcpHdrSize Dapp minimum TCP header size
DappIpv4IcmpMaxLength Dapp maximum length for IPv4 ICMP packets
DappIpv6IcmpMaxLength Dapp maximum length for IPv6 ICMP packets

This section contains information about the following topics:

Enabling and disabling QoS Agent support

Prerequisites

Use the following procedure to enable and disable QoS Agent support.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

In the QosOperMode, select enable or disable.


--End--

Enabling Automatic QoS

Prerequisites

Use the following procedure to enable Automatic QoS support.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Select the appropriate mode in the AQApplicationMode section from the following:

  • enablePureMode - Enables Automatic QoS functionality with DSCP remarking at egress disabled.
  • enableMixedMode - Enables Automatic QoS functionality with DSCP remarking at egress enabled.
5

Click Apply.


--End--

Disabling Automatic QoS

Prerequisites

Use the following procedure to disable Automatic QoS support.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Select Disable in the AQApplicationMode section.

5

Click Apply.


--End--

Configuring the QoS trusted processing mode

Prerequisites

Use the following procedure to configure the trusted processing mode.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Select the appropriate mode in the TrustedProcessingMode section from the following:

  • partialDscpMapping - Sets the QoS trusted processing mode to partial DSCP mapping.
  • fullDscpMapping - Sets the QoS trusted processing mode to full DSCP mapping.
5

Click Apply.


--End--

Enabling DoS Attack Prevention Package (DAPP)

Prerequisites

Use the following procedure to enable DAPP.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Under the DoS Attack Prevention Package section, choose the DappEnable mode:

  • disable (Default) - Disables DAPP.
  • enableWithoutStatusTracking - Enables DAPP without enabling status tracking.
  • enableWithStatusTracking - Enables DAPP and enables status tracking.
5

Click Apply.


--End--

Configuring DAPP minimum TCP header size

Prerequisites

Use the following procedure to set the minimum TCP header size used by DAPP.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Under the DoS Attack Prevention Package section, enter a value in the range 0 to 255 in the DappMinTcpHdrSize text box.

5

Click Apply.


--End--

Configuring DAPP maximum IPv4 ICMP length

Prerequisites

Use the following procedure to set the maximum IPv4 ICMP length used by DAPP.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Under the DoS Attack Prevention Package section, enter a value in the range 0 to 1023 in the DappIpv4IcmpMaxLength text box.

5

Click Apply.


--End--

Configuring DAPP maximum IPv6 ICMP length

Prerequisites

Use the following procedure to set the maximum IPv6 ICMP length used by DAPP.

Procedure steps


Step Action

1

From the navigation tree, double-click QoS.

2

From the QoS tree, double-click QoS Agent.

3

Select the Configuration tab.

4

Under the DoS Attack Prevention Package section, enter a value in the range 0 to 16383 in the DappIpv6IcmpMaxLength text box.

5

Click Apply.


--End--