Citrix Access Suite 4 Advanced Concepts: The Official Guide in Software

Creator Quick Response Code in Software Citrix Access Suite 4 Advanced Concepts: The Official Guide

Citrix Access Suite 4 Advanced Concepts: The Official Guide
Drawing QR Code 2d Barcode In None
Using Barcode generator for Software Control to generate, create QR Code ISO/IEC18004 image in Software applications.
Scan QR Code In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
5 The user clicks an application 6 Web Interface contacts the first server in the server location list again and requests the address for the least-loaded server Because XYZ is using zone preference and failover based on the client IP address, a server in the Fort Lauderdale zone is returned 7 The client now initiates an ICA connection to the server address that is returned A similar process applies to users in Redmond, however, they contact the Redmond Web Interface server using WIREDXYZCOM All of their users also connect locally in Redmond In the situation where the Fort Lauderdale site is obliterated by a hurricane and the Web Interface servers in Fort Lauderdale are no longer online, the administrator must make a DNS change to point WIFTLXYZCOM to the Redmond Web Interface servers This change enables user connectivity, but it may impact the users until their DNS cache expires In Windows DNS environments, the DNS addresses are cached on the client devices for one hour (3600 seconds), the default TTL Therefore, in the default case, it can take up to one hour before clients are failed over to the new site If this failover time is unacceptable, another option is to modify the TTL on the DNS server On Windows clients, there is also a registry value that controls how long DNS entries are cached This value is
Generate QR-Code In Visual C#
Using Barcode creation for .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
QR Code JIS X 0510 Drawer In VS .NET
Using Barcode printer for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
MaxCacheEntryTtlLimit HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNScache\Parameters Default Value = 0x15180 (86400 seconds or 1 Day) Data Type = REG_DWORD Range = 0x1-0xFFFFFFFF (seconds)
Encoding Quick Response Code In VS .NET
Using Barcode creator for .NET framework Control to generate, create Quick Response Code image in VS .NET applications.
QR Code 2d Barcode Printer In VB.NET
Using Barcode creation for .NET framework Control to generate, create Denso QR Bar Code image in VS .NET applications.
IMPORTANT Modifying this value affects the DNS cache for the entire client device Consult Microsoft documentation before modifying this value to understand all the possible side effects Please see Figure 19-18 for an example of this DNSCache change and the impact this change has If the Fort Lauderdale site is down, the connection process works as follows: 1 The user opens a browser on the client device and enters the FQDN for the Fort Lauderdale Web Interface server, WIFTLXYZCOM 2 The DNS server returns the IP address of the Web Interface server in Redmond 3 The client connects to the Redmond Web Interface server 4 Web Interface contacts the first server in the server location settings for Web Interface In this case, the first server in the list is the local data collector in Redmond 5 The data collector returns a list of applications to which the user has access and displays it in the browser 6 The user clicks an application
Code 128 Code Set A Maker In None
Using Barcode drawer for Software Control to generate, create ANSI/AIM Code 128 image in Software applications.
DataMatrix Creation In None
Using Barcode creation for Software Control to generate, create ECC200 image in Software applications.
19:
Code 3 Of 9 Encoder In None
Using Barcode printer for Software Control to generate, create Code-39 image in Software applications.
GTIN - 128 Drawer In None
Using Barcode generation for Software Control to generate, create GS1-128 image in Software applications.
Disaster Recovery Planning and Configuration
Painting Barcode In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
GTIN - 13 Creation In None
Using Barcode creation for Software Control to generate, create EAN 13 image in Software applications.
Fort Lauderdale
Draw USS ITF 2/5 In None
Using Barcode generator for Software Control to generate, create 2 of 5 Interleaved image in Software applications.
GS1 128 Maker In None
Using Barcode generation for Font Control to generate, create UCC-128 image in Font applications.
Redmond
Drawing EAN-13 In C#
Using Barcode generation for VS .NET Control to generate, create EAN 13 image in .NET applications.
Creating Data Matrix ECC200 In None
Using Barcode generator for Font Control to generate, create ECC200 image in Font applications.
Data Store
Make Barcode In None
Using Barcode encoder for Office Excel Control to generate, create bar code image in Office Excel applications.
ECC200 Scanner In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Data Store
Painting 1D In Visual C#
Using Barcode drawer for .NET Control to generate, create 1D Barcode image in Visual Studio .NET applications.
Drawing Barcode In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Data Collector Member Servers
Data Collector Member Servers
Web Interface
Web Interface
Clients in proximity to Fort Lauderdale
Clients in proximity to Redmond
Figure 19-18 Fort Lauderdale site failure and failover
7 Web Interface contacts the first server in the server location list and requests the address for the least-loaded server Because XYZ is using zone preference and failover based on the client IP address, the data collector attempts to connect the user to Fort Lauderdale Because all Fort Lauderdale servers are offline, the data collector uses Redmond, which is the backup site 8 The ICA connection now launches to the server address that is returned
Client Connections with Global Server Load Balancing
XYZ is using the two fully qualified domain names to point to each site because its load balancers do not support global server load balancing If XYZ purchases a load balancer with the capabilities of a Citrix NetScaler Application Switch, they could use a single Web Interface fully qualified domain name for all users in the organization The global server load-balancing option on the Citrix NetScaler Application Switch allows user
Citrix Access Suite 4 Advanced Concepts: The Official Guide
Fort Lauderdale
Redmond
Data Store
Data Store
Data Collector
Data Collector
Member Servers Web Interface Web Interface
Member Servers
Clients in proximity to Fort Lauderdale
3 5 4 1
GSLB Metric Exchange 2
Clients Local DNS Server
Figure 19-19 Client connections using Global Server Load Balancing of NetScaler Application
Switches
traffic to be distributed automatically among the sites Users can be directed statically to a specific site or they can be directed dynamically to the closest site, based on the roundtrip time When a site failure occurs, all traffic is routed from the failed site to the site that is still online Figure 19-19 is an example of a client connecting through NetScaler Application Switches using the Global Server Load-Balancing option The connection process using global server load balancing works as follows: 1 The user opens a browser on the client device and enters the FQDN for the Web Interface Server, WIXYZCOM This request is sent to the local DNS server 2 The client s local DNS server gets the IP address of the XYZ corporate DNS server from a root DNS server The client s local DNS server contacts the IP address returned by the root DNS server This returned address is the address of the NetScaler DNS proxy
19:
Copyright © OnBarcode.com . All rights reserved.