Extreme Networks Px Series manual Configuring a Startup Banner Message

Utilities

Configuring a Startup Banner Message

To configure a banner message to display after reboot, use the following command:

config banner

At the prompt, type the banner message. To exit the banner input script, type [Return][Return].

To view the configured banner, use the following command:

show banner

Starting the GlobalPx Content Director Agent

Extreme Networks GlobalPx Content Director™ is a DNS-based Internet traffic management system, allowing you to take advantage of network and server resources regardless of their location on the Internet or your Intranet. As you add points of presence (POPs, clusters of one or more Px-series switches) to a network, GlobalPx Content Director monitors server loads and network response latencies, distributing client requests to the POP that it determines will deliver the best performance. GlobalPx Content Director improves client access performance and reliability by leveraging dispersed network resources.

The GlobalPx Content Director transparently directs clients and client DNS servers to the most appropriate POP to satisfy client requests. Typically, the physically closest POP is the one that gives the fastest response. However, this is not always the case. The GlobalPx Content Director scheduler routes requests to the optimal POP. In determining the optimal POP, the scheduler receives the following information from the Px series application switch that runs the agents that monitor each POP:

•Client/server network latency—The time it takes for information to travel from the POP to the client. The closest POP in terms of response time exhibits the least latency.

•Real-time server load—The computing burden of the POP. The least loaded POP can handle requests most quickly.

•Server availability—Only those POPs that are running and available are eligible to receive requests. Requests are scheduled around failed POPs. Once an unavailable POP comes back up, the scheduler includes it again as a possible POP for selection.

To minimize response time to the client, requests are directed to servers at a POP that is available and that has the smallest network latency and load.

Px Series Application Switch Installation and Configuration Guide 4-17