
Glossary
Glossary - 10
Observed mode
Observed mode is a dynamic load balancing mode that bases connection
distribution on a combination of two factors: the server that currently hosts
the fewest connections and also has the fastest response time.
origin pool
The origin pool specifies a pool of servers that contain original copies of all
content. Requests are load balanced to this pool when any of the following is
true: the requested content is not cacheable, no cache server is available, or
the BIG-IP Cache Controller redundant system is redirecting a request from
a cache server that did not have the requested content.
origin server
An origin server is the web server on which all original copies of your
content reside.
performance monitor
A performance monitor gathers statistics and checks the state of a target
device.
persistence
A series of related connections received from the same client, having the
same session ID. When persistence is turned on, a BIG-IP sends all
connections having the same session ID to the same node, instead of load
balancing the connections.
pool
A pool is composed of a group of network devices (called members). The
BIG-IP load balances requests to the nodes within a pool based on the load
balancing method and persistence method you choose when you create the
pool or edit its properties.
port
A port can be represented by a number that is associated with a specific
service supported by a host. Refer to the Services and Port Index for a list of
port numbers and corresponding services.
port-specific wildcard virtual server
A port-specific wildcard virtual server is a wildcard virtual server that uses a
port number other than 0. See wildcard virtual server.
port mirroring
Port mirroring is a feature that allows you to copy traffic from any port or
set of ports to a single, separate port where a sniffing device is attached.
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