dcb-apptrust - Linux

Overview

dcb-apptrust is a utility for managing data center bridging (DCB) application trust levels on network devices. DCB is a set of Ethernet standards that aim to optimize network performance for data center applications. Application trust levels define the level of priority given to specific types of traffic.

Syntax

dcb-apptrust [options] <command> <arguments>

Options/Flags

• -h, –help: Display the help message and exit.
• -v, –version: Print the program version and exit.
• -d, –device: Specify the network device to configure (e.g., eth0).

Commands

set: Set the application trust level for a specified class

• Syntax: set <class> <trust-level>
• Example: set 1 2 (Sets class 1 to trust level 2)

get: Get the application trust level for a specified class

• Syntax: get <class>
• Example: get 1 (Gets the trust level for class 1)

Examples

Configure the trust level for a specific class:

dcb-apptrust set 1 2

Get the trust level for a specific class:

dcb-apptrust get 1

Common Issues

• Trust level not recognized: Ensure the provided trust level is valid (0-3).
• Device not supported: Check that the specified device supports DCB and application trust level configuration.

Integration

In combination with TC: dcb-apptrust can be used alongside the tc command to configure traffic control rules based on the application trust levels.

dcb-apptrust set 1 2
tc filter add dev eth0 ingress protocol ip prio 1 u32 match u32 0 0 flowid 1:1

Related Commands

• tc: Traffic control utility
• ethtool: Network device configuration tool