Coyote Point Systems Equalizer Especificações descarregar pdf (Página 591)

session

A logical connection between a server and a client that may span a series of individual client requests and server

responses (i.e., transactions). Depending on the application, a session may also span multiple client-server

connections as well as transactions. Session data is typically maintained using cookies inserted into client

requests and server responses, by Equalizer, servers, or both. Session data may also be maintained on clients

and servers. Equalizer uses cookies at Layer 7 and a sticky timer at Layer 4 to provide server persistence; the

cookie lifetime or sticky time to set on Equalizer is determined by the application, and should usually match the

corresponding cookie or session timeouts set on the real servers in a cluster.

SFP and SFP+

SFP+ is the new version which supports 10Gb throughput. Stands for "Small Factor Pluggable transceiver". A

port with which a number of different network cables to be used, including regular 'copper' cables, or 'fiber'

(optical) cables.Fiber-optic uses a glass cable to send light signals, and copper users a metal (copper) cable to

send electrical signals.

site

An Envoy site is part of an Envoy geocluster. It points to an existing virtual cluster on an Equalizer running

Envoy.

source IP-based persistence

When a TCP SYN packet is received, a load balancer looks for hte source IP address in its session table. If an

entry is not found, it treats the user as "new" and selects a server based on the load balancing algorithm. to

forward the packet. The load balancer also makes an entry in the session table. If an entry for this source IP

address is found in the session table, the load balancer forwards the packet to the same server that received the

previous connection for this source IP address regardless of the load balancing algorithm.

Source NAT

This inbound address translation feature allows Equalizer to substitute one of it's own IP addresses for the

requesting clients IP address.

Source Routing

Source routing allows a sender of a packet to partially or completely specify the route the packet takes through

the network. In contrast, in non-source routing protocols, routers in the network determine the path based on

the packet's destination.

spoofing

Using the client’s IP address for the source IP address in client requests. This fools (or spoofs) the server into

regarding the client as the source of the request. For spoofing to work, the default gateway for the server must

be set to Equalizer’s internal IP address.

SSL

See Secure Sockets Layer (SSL).

stack

An area of reserved memory in which applications place status data and other data. See protocol stack.

stale connection

A partially open or closed connection.

state

Status; the current condition of a network, computer, or peripherals.

stateless

A condition in which a server processes each request from a site independently and cannot store information

about prior requests from that site. Each request stands on its own. See also DNS and RADIUS.

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