Allocating Resource Control and Bandwidth Management <meta http-equiv="refresh" content="0;url='http://www.oracle.com/pls/topic/lookup?ctx=solaris11'"> on a Network (System Administration Guide: Network Interfaces and Network Virtualization)

System Administration Guide: Network Interfaces and Network Virtualization

Allocating Resource Control and Bandwidth Management on a Network

The following figure shows a corporate network topology that uses resource control to manage various applications.

Network With Resource Controls in Place

Figure 9–2 Network With Resource Controls in Place

This figure shows a typical network topology that uses resource controls to improve network efficiency and performance. The network does not implement VNICs and containers, such as exclusive zones and virtual machines. However, VNICs and containers could be used on this network for consolidation and other purposes.

The network is divided into four tiers:

Tier 0 is the demilitarized zone (DMZ). This is a small local network that controls access to and from the outside world. Resource control is not used on the systems of the DMZ.
Tier 1 is the web tier and includes two systems. The first system is a proxy server that does filtering. This server has two interfaces, bge0 and bge1. The bge0 link connects the proxy server to the DMZ on Tier 0. The bge0 link also connects the proxy server to the second system, the web server. The http and https services share the bandwidth of the web server with other standard applications. Due to the size and critical nature of web servers, shares of http and https require guarantees and prioritization.
Tier 2 is the applications tier and also includes two systems. The second interface of the proxy server, bge1, provides the connection between the web tier and the applications tier. Through a switch, an applications server connects to bge1 on the proxy server. The applications server requires resource control to manage the shares of bandwidth given to the various applications that are run. Critical applications that need a lot of bandwidth must be given higher guarantees and priorities than smaller, or less critical applications.
Tier 3 is the database tier. The two systems on this tier connect through a switch to the proxy server's bge1 interface. The first system, a database server, needs to issue guarantees and to prioritize the various processes involved in database lookups. The second system is a backup server for the network. This system must consume a great deal of bandwidth during backups. However, backup activities are typically carried out overnight. Using resource controls, you can control when the backup processes have the highest bandwidth guarantees and highest priorities.