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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

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 Traffic Flow

Commands for Monitoring Traffic Statistics

Gathering Statistics About Network Traffic on Links

Obtaining Network Traffic Statistics on Network Devices

Obtaining Network Traffic Statistics on Lanes

Obtaining Network Traffic Statistics on Link Aggregations

Gathering Statistics About Network Traffic on Flows

Configuring Network Accounting for Network Traffic

How to Set Up Network Accounting

How to Obtain Historical Statistics on Network Traffic


Overview of Network Traffic Flow

Packets traverse a path when they flow into or out of a system. On a granular level, packets are received and transmitted through receive (Rx) rings and transmit (Tx) rings of a NIC. From these rings, received packets are passed up the network stack for further processing while outbound packets are sent to the network.

This section introduces the concept of network lanes. A network lane is a combination of system resources that are allocated to manage network traffic. Thus, network lanes are customized paths for specific types of network traffic. Each lane can be either a hardware lane or a software lane. In addition, each lane type can be either a receive lane or a transmit lane.

The distinction between hardware and software lanes is based on a NIC's ability to support rings and ring allocation as described in Working With Clients, Transmit Rings, and Receive Rings. This chapter focuses primarily on incoming traffic that is received through receive lanes.

Note - Rx and Tx rings, as well as other network resources, are assigned by setting properties of datalinks. Therefore, datalinks are the network lanes on a system.

On hardware lanes, packets have exclusive use of rings that are assigned to those lanes. In contrast, rings on software lanes are shared by all network packets on those lanes.. Datalinks are configured to share rings for the following reasons:

The following figure shows different hardware lanes.

Figure 4-1 Hardware Lanes

image:Graphic of network lanes

Figure 4-1 shows the following configuration:

The subsequent sections describe how you monitor the traffic that flows through these lanes.