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Using Virtual Networks in Oracle Solaris 11.1     Oracle Solaris 11.1 Information Library
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Document Information


1.  Network Virtualization and Resource Management in Oracle Solaris

Overview of Network Virtualization

Components of Network Virtualization

Who Should Implement Virtual Networks?

Commands for Configuring Virtualization Components

Overview of Network Resource Management

Datalink Properties for Resource Control

Network Resource Management by Using Flows

Commands for Network Resource Management

2.  Creating and Administering Virtual Networks in Oracle Solaris

3.  Managing Network Resources in Oracle Solaris

4.  Monitoring Network Traffic and Resource Usage in Oracle Solaris


Overview of Network Resource Management

This section explains different methods you can use to manage the use of network resources on a system.

Datalink Properties for Resource Control

In Oracle Solaris 11, quality of service (QoS) is obtained more easily and dynamically by managing network resources. Network resource management consists of setting datalink properties that pertain to network resources. By setting these properties, you determine how much of a given resource can be used for networking processes. For example, a link can be associated with a specific number of CPUs that are reserved exclusively for networking processes. Or, a link can be allotted a given bandwidth to process a specific type of network traffic.

After a resource property is defined, the new value takes effect immediately. This method makes managing resources flexible. You can set resource properties when you create the link. Alternatively, you can set these properties later, for example, after studying resource usage over time and determining how to better allocate the resource. The procedures for allocating resources apply to both the virtual network environment as well as the traditional physical network. For example, you use the dladm set-linkprop command to set properties that are related to network resources. The same syntax is used on both physical and virtual datalinks.

Network resource management is comparable to creating dedicated lanes for traffic. When you combine different resources to cater to specific types of network packets, those resources form a network lane for those packets. Resources can be assigned differently for each network lane. For example, you can allocate more resources to a lane where network traffic is heaviest. By configuring network lanes where resources are distributed according to actual need, you increase the system's efficiency to process packets. For more information about network lanes, see Overview of Network Traffic Flow.

Network resource management is helpful for the following tasks:

You can isolate, prioritize, track, and control data traffic on an individual system without the complex QoS rule definitions.

Network Resource Management by Using Flows

A flow is a customized way of categorizing packets to further control how resources are used to process these packets. Network packets can be categorized according to an attribute. Packets that share an attribute constitute a flow and are labeled with a specific flow name. The flow can then be assigned specific resources.

The attributes that serve as the basis for creating flows are derived from the information in a packet's header. You can organize packet traffic into a flow according to one of the following attributes:

A flow can be based on only one of the attributes in the list. For example, you can create a flow according to the port that is being used, such as port 21 for FTP, or according to IP addresses, such as packets from a specific source IP address. However, you cannot create a flow for packets from a specified IP address that are received on port number 21. Likewise, you cannot create a flow for all traffic from IP address and then create a flow for transport layer traffic on Thus, you can configure multiple flows on a system, with each flow based on a different attribute.

Commands for Network Resource Management

The command to use for allocating network resources depends on whether you are directly working on datalinks or on flows.