Coyote Point Systems Equalizer Spezifikationen PDF herunterladen (Seite 583)

hub

A device that joins all the components attached to a network.

ICMP

Internet Control Message Protocol. Used by operating systems of networked computers to send error messages

indicating that a requested service is not available or that a host or router could not be reached.

ICMP echo request

The act of repeating a stream of characters (for example, echoing on the computer screen characters as a user

types those characters). See ping. See also echo.

ICMP Probe Maximum Tries

Enables probing servers using ICMP echo (ping) probes. These probes are 5 seconds apart. If a server does not

respond to an ICMP prebend it has attempted to probe the number of times specified, it is marked down only if

there are no other probes (TCP, ACV, or server agent) active for the cluster.

ICMP Probes

These are Server HealthChecks. ICMP health checks basically have Equalizer sending a "ping" to a server and

"listening" if the server sends a response. If the server does not respond within the configured time, the server

is marked "down" and no further traffic is sent to that server until it starts responding to health checks.

ICMP triangulation

Routing client requests to the closest site geographically based on triangulation, a method of calculating the

location of a site using the known locations of two or more other sites.

initial weight

The weight that an administrator assigns to a particular server. During operation, Equalizer dynamically adjusts

the server weights (that is, dynamic weight), so a server’s weight at a particular time might be different from

the initial weight originally set by the administrator. See dynamic weight, server weight, and weight.

intelligent load balancing

A request for load balancing using Equalizer-based algorithms that assess the configuration options set for

cluster and servers, real-time server status information, and information in the request itself. See algorithm and

load balancing. See also geographic load balancing.

interface

The place at which two or more systems connect and communicate with each other. See external interface,

internal interface, and network interface.

internal address

The IP address assigned to Equalizer on the internal network.

internal network

The subnet to which the back-end server machines are connected.

Internet Control Message Protocol (ICMP)

The ISO/OSI Layer 3, Network, protocol that controls transport routes, message handling, and message

transfers during IP packet processing. See ICMP triangulation and ISO/OSI model.

Internet protocol; the TCP/IP protocol that controls breaking up data messages into packets, sending the

packets, and reforming the packets into their original data messages. See Internet protocol stack, IP address,

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Equalizer Administration Guide

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Coyote Point Systems Equalizer Spezifikationen Seite 583