Getting Started with Citrix ADC
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Optimize Citrix ADC VPX performance on VMware ESX, Linux KVM, and Citrix Hypervisors
Apply Citrix ADC VPX configurations at the first boot of the Citrix ADC appliance in cloud
Install a Citrix ADC VPX instance on Microsoft Hyper-V servers
Install a Citrix ADC VPX instance on Linux-KVM platform
Prerequisites for Installing Citrix ADC VPX Virtual Appliances on Linux-KVM Platform
Provisioning the Citrix ADC Virtual Appliance by using OpenStack
Provisioning the Citrix ADC Virtual Appliance by using the Virtual Machine Manager
Configuring Citrix ADC Virtual Appliances to Use SR-IOV Network Interface
Configuring Citrix ADC Virtual Appliances to use PCI Passthrough Network Interface
Provisioning the Citrix ADC Virtual Appliance by using the virsh Program
Provisioning the Citrix ADC Virtual Appliance with SR-IOV, on OpenStack
Configuring a Citrix ADC VPX Instance on KVM to Use OVS DPDK-Based Host Interfaces
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Deploy a VPX high-availability pair with elastic IP addresses across different AWS zones
Deploy a VPX high-availability pair with private IP addresses across different AWS zones
Configure a Citrix ADC VPX instance to use SR-IOV network interface
Configure a Citrix ADC VPX instance to use Enhanced Networking with AWS ENA
部署一个Citrix ADC VPX实例on Microsoft Azure
Network architecture for Citrix ADC VPX instances on Microsoft Azure
Configure multiple IP addresses for a Citrix ADC VPX standalone instance
Configure a high-availability setup with multiple IP addresses and NICs
Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
Configure a Citrix ADC VPX instance to use Azure accelerated networking
Configure HA-INC nodes by using the Citrix high availability template with Azure ILB
Configure a high-availability setup with Azure external and internal load balancers simultaneously
Configure address pools (IIP) for a Citrix Gateway appliance
Upgrade and downgrade a Citrix ADC appliance
Authentication, authorization, and auditing application traffic
Basic components of authentication, authorization, and auditing configuration
On-premises Citrix Gateway as an identity provider to Citrix Cloud
Authentication, authorization, and auditing configuration for commonly used protocols
Troubleshoot authentication and authorization related issues
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Exporting Performance Data of Web Pages to AppFlow Collector
Session Reliability on Citrix ADC High Availability Pair
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Persistence and persistent connections
Advanced load balancing settings
Gradually stepping up the load on a new service with virtual server–level slow start
Protect applications on protected servers against traffic surges
Retrieve location details from user IP address using geolocation database
Use source IP address of the client when connecting to the server
Use client source IP address for backend communication in a v4-v6 load balancing configuration
Set a limit on number of requests per connection to the server
Configure automatic state transition based on percentage health of bound services
Use case 2: Configure rule based persistence based on a name-value pair in a TCP byte stream
Use case 3: Configure load balancing in direct server return mode
Use case 6: Configure load balancing in DSR mode for IPv6 networks by using the TOS field
Use case 7: Configure load balancing in DSR mode by using IP Over IP
Use case 10: Load balancing of intrusion detection system servers
Use case 11: Isolating network traffic using listen policies
Use case 14: ShareFile wizard for load balancing Citrix ShareFile
Use case 15: Configure layer 4 load balancing on the Citrix ADC appliance
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Authentication and authorization for System Users
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Configuring a CloudBridge Connector Tunnel between two Datacenters
Configuring CloudBridge Connector between Datacenter and AWS Cloud
Configuring a CloudBridge Connector Tunnel Between a Datacenter and Azure Cloud
Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
Configuring a CloudBridge Connector Tunnel Between a Citrix ADC Appliance and Cisco IOS Device
CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Synchronizing Configuration Files in a High Availability Setup
Restricting High-Availability Synchronization Traffic to a VLAN
Understanding the High Availability Health Check Computation
Managing High Availability Heartbeat Messages on a Citrix ADC Appliance
Remove and Replace a Citrix ADC in a High Availability Setup
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Session reliability on Citrix ADC high availability pair
When a network disruption or a device failover occurs during an ICA session, session reconnection can use one of two mechanisms: session reliability or Auto Client Reconnect.
Session reliability. The preferred mode, is a smooth experience for the user. The disruption is barely noticeable for brief network interruptions.
Auto client reconnect. The fallback option, involves restarting the client. This mechanism is disruptive for the user and is not always supported.
Receivers can reconnect their ICA sessions seamlessly using the ICA session reliability feature, when HDX Insight is enabled. This feature works both in standalone and in a Citrix ADC HA pair configuration, and even when a Citrix ADC failover happens.
Note:
- Citrix ADC appliances must be running on software version 11.1 build 49.16 or later.
- You must not enable or disable session reliability mode when the Citrix ADC appliances have active connections.
- Enabling or disabling the feature when connections are still active causes HDX Insight to stop parsing those sessions after a failover occurs. It results in the loss of information about the sessions.
- Session reliability on a high availability setup is disabled by default for Citrix ADC software version 11.1 49.16 or later. Session reliability is supported on a high availability setup only if both the nodes of the setup run the same build (for example, release 11.1 build 53). In other words, session reliability is not supported on a high availability setup if both the nodes run different builds (for example, one node has release 11.1 build 53 whereas the other has release 11.1 build 56). Session reliability for SSL VDA is supported if the following conditions are met:
- The “EnableSRonHAFailover” parameter in the
set ica parameter
command must be YES.- The HTTPS must be used instead of HTTP while configuring the virtual server.
- When HDX Insight is enabled, basic encryption applications and desktops reconnect after high availability failover even if the EnableSRonHAFailover parameter is disabled.
To configure Session reliability by using CLI:
- At the command line, use the default system administrator credentials to log on to the system.
- To enable session reliability on HA failover, at the prompt, type:
set ica parameter EnableSRonHAFailover YES
- To disable session reliability on HA failover, at the prompt, type:
set ica parameter EnableSRonHAFailover NO
To Enable Session reliability on HA failover by using GUI:
- In a web browser, type the IP address of the primary Citrix ADC instance in the HA pair (for example,http://192.168.100.1).
- InUser NameandPassword, enter the administrator credentials.
- On theConfigurationtab, navigate toSystem>Settings, and clickChange ICA Parameters.
- In theChange ICA Parameterssection, selectSession Reliability on HA Failover.
- ClickOK.
Limitations
- 在增加bandwid启用这个特性结果th consumption which is due to ICA compression being turned off by the feature. And the extra traffic between the primary and secondary nodes to keep them in sync.
- This feature is supported in Active-Passive mode only. Active-Active mode is not currently supported.
- When HDX Insight is enabled, and session reliability on the HA knob is set to NO, only ACR reconnect mode is supported in the Citrix ADC high availability failover scenario. The HA knob does not disable session reliability if HDX Insight is disabled.
TheSession Reconnect Semanticstable is as follows:
Session reconnects semantics
Status | EnableSRonHAFailover Yes | EnableSRonHAFailover No (Default) |
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HDX Insight enabled | Session reconnect for ICA Session works | Session reconnect for ICA Sessions does not work |
HDX Insight disabled | Session reconnect for ICA Session works | Session reconnect for ICA Sessions works |
Points to note
- Session reliability for ICA sessions works out of the box with Citrix Gateway.
- Session reliability for ICA sessions does not work ONLY when both the following conditions are met:
- HDX Insight is enabled
- EnableSRonHAFailover is set to NO
- Setting the EnableSRonHAFailover knob to either YES or NO does not make any difference, when HDX Insight is disabled.
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