HP Network Direr Software Products manual Servers Step

Components 635

Servers Step

You can select servers for prioritization or blocking. In terms of the Prioritize Network Traffic Wizard, a server can be any device with an IP address regardless of whether or not the device is present in the 3Com Network Director map. This enables you to perform actions such as blocking traffic to and from streaming media servers that are external to your company or to prioritize traffic to and from your partners websites.

■Prioritized Servers — when a server is prioritized, two things occur:

■Traffic to or from the prioritized server will be treated as more important than non-prioritized traffic by the configured devices. Traffic will, therefore, flow through the network faster and with less chance of being dropped.

■Prioritizing the server overrides application blocking, so a server selected for prioritization will still be able to use applications that are selected for blocking without the devices in the network dropping the application’s traffic. 3Com Network Director configures devices that are capable of classifying traffic based upon IP addresses to identify traffic going to or from a server selected for prioritization. This is achieved by creating classifier rules that match packets with either the destination or source IP address respectively set to the IP address of the server. Traffic that matches these classifier rules is mapped to the Business Critical service level. See “3Com Network Director Service Levels” on page 655 for definitions of the service levels used by 3Com Network Director.

When you are configuring devices that are not capable of classifying traffic based upon IP addresses, 3Com Network Director configures these devices to identify traffic with the Business Critical DiffServ codepoint. Traffic that matches this classifier rule is also mapped to the Business Critical service level.

■Blocked Servers — selecting a server for blocking simply causes traffic to or from that server to be dropped by configured devices that are capable of both classifying traffic based upon IP addresses and of dropping traffic as a result of classification. 3Com Network Director configures these devices to identify traffic going to or from a server that has been selected for blocking. This is achieved by creating classifier rules that match packets with either the destination or source IP address respectively set to the IP address of the server. Traffic that matches these classifier rules is mapped to the Drop service level. See “3Com Network Director Service Levels” on page 655 for definitions of service levels used by 3Com Network Director.