Configuring basic slb – Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
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Brocade Virtual ADX Server Load Balancing Guide
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Configuring basic SLB
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In the example, the Brocade Virtual ADX inspects and modifies packets sent to a VIP. The real
server uses the L3 DSR VIP as the source address in response packets if the DSCP bit value of the
received packet matches the configured value.
1. The client sends a packet to an L3 DSR VIP on the Brocade Virtual ADX.
2. The Brocade Virtual ADX modifies the DSCP field in the packet to a configured value and sends
the packet to a real server.
3. The real server examines the DSCP field and (if the field matches the configured value) uses
the DSR VIP as a source IP address instead of its own interface IP address. The real server
then sends the packet directly to the client.
For a complete discussion of L3 DSR and a configuration example, refer to
Configuring basic SLB
To configure basic SLB, perform the following tasks:
•
Define the application servers as real servers on the Brocade Virtual ADX. Refer to
the real servers and real application ports”
•
Define a virtual server. Refer to
“Defining a virtual server (VIP)”
•
Bind the real servers to the VIP. Refer to
“Binding virtual and real servers”
shows an example of a basic SLB configuration. This example uses multiple Web servers
to handle remote Web requests received on the Web site. The Web site URL is assigned to the
switch as the focal point for all inquiries as a virtual server address. The virtual server will then
forward requests to each of the four Web servers as specified by the predictor (load balancing
metric).
The sections following this example show how to configure the Brocade Virtual ADX in the example
using the CLI.
FIGURE 5
Basic SLB configuration