Configuring HP WebQoS for HP-UX

Installing and Using HP LocalDirector Controller
What is HP LocalDirector Controller?
Chapter 6140
What is HP LocalDirector Controller?
HP LocalDirector Controller (HP LDC) works withCisco LocalDirector
1
by
automatically generating the information needed by Cisco LocalDirector
to load balance TCP/IP traffic across multiple servers. HP LDC,
specifically the HP LocalDirector Control daemon (ldc_agt), must be
configured and running on each system that is managed by Cisco
LocalDirector. Information regarding Cisco LocalDirector can be found at
the URL http://www.cisco.com/warp/public/751/lodir/.
Figure 6-1 HP LocalDirector Controller
The information generated by HP LDC is referred to as “weights” in this
document. The weights help Cisco LocalDirector determine which
system has the resources to process an incoming request.
Initial weights are generated by the Webstone benchmark tool. Webstone
generates traffic to a system and calculates the throughput based on
getting different-sized static pages in three minutes. The throughput is
used to calculate the initial weights.
With HP LDC, each server can be assigned a weight. HP LDC uses this
weight to determine the percentage of the current number of
connections. Servers with a higher weight value receive a larger
percentage of connections at any one time. There are two load balancing
algorithm in HP LDC that use weights. One is weighted least
connection; the other is weighted R/R DNS.
1. Cisco LocalDirector is a product of Cisco Systems, Inc.
Cisco
LocalDirector
HP LDC
Server 1
HP LDC
Server 2
Internet/
Intranet
HP 9000
HP 9000