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Getting Started with Citrix ADC
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Solutions for Telecom Service Providers
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Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
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Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
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Deploy a Citrix ADC VPX instance
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Install a Citrix ADC VPX instance on Microsoft Hyper-V servers
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Install a Citrix ADC VPX instance on Linux-KVM platform
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Prerequisites for Installing Citrix ADC VPX Virtual Appliances on Linux-KVM Platform
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Provisioning the Citrix ADC Virtual Appliance by using OpenStack
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Provisioning the Citrix ADC Virtual Appliance by using the Virtual Machine Manager
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Configuring Citrix ADC Virtual Appliances to Use SR-IOV Network Interface
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Configuring Citrix ADC Virtual Appliances to use PCI Passthrough Network Interface
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Provisioning the Citrix ADC Virtual Appliance by using the virsh Program
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Provisioning the Citrix ADC Virtual Appliance with SR-IOV, on OpenStack
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Configuring a Citrix ADC VPX Instance on KVM to Use OVS DPDK-Based Host Interfaces
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Deploy a Citrix ADC VPX instance on Microsoft Azure
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Network architecture for Citrix ADC VPX instances on Microsoft Azure
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Configure multiple IP addresses for a Citrix ADC VPX standalone instance
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Configure a high-availability setup with multiple IP addresses and NICs
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Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
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Configure a high-availability setup with a single IP address and a single NIC
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Configure address pools (IIP) for a Citrix Gateway appliance
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Configure multiple Azure VIPs for a standalone or high availability Citrix ADC instance
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Deploy a VPX high-availability pair on Google Cloud Platform
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Upgrade and downgrade a Citrix ADC appliance
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Authentication, authorization, and auditing application traffic
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Configuring authentication, authorization, and auditing policies
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Configuring Authentication, authorization, and auditing with commonly used protocols
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Active Directory Federation Service Proxy Integration Protocol compliance (Technical preview)
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Use an on-premises Citrix Gateway as the identity provider for Citrix Cloud
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Configure EULA as an authentication factor in Citrix ADC nFactor system
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Configure pre-authentication Endpoint Analysis scan as a factor in nFactor authentication
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Configure periodic Endpoint Analysis scan as a factor in nFactor authentication
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Configure pre-auth and post-auth EPA scan as a factor in nFactor authentication
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Configure prefill user name from certificate in Citrix ADC nFactor authentication
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Localize error messages generated by Citrix ADC nFactor system
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Exporting Performance Data of Web Pages to AppFlow Collector
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Session Reliability on Citrix ADC High Availability Pair
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Persistence and persistent connections
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Advanced load balancing settings
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Gradually stepping up the load on a new service with virtual server–level slow start
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Protect applications on protected servers against traffic surges
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Retrieve location details from user IP address using geolocation database
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Use source IP address of the client when connecting to the server
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Use client source IP address for backend communication in a v4-v6 load balancing configuration
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Set a limit on number of requests per connection to the server
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Configure automatic state transition based on percentage health of bound services
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Use case 2: Configure rule based persistence based on a name-value pair in a TCP byte stream
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Use case 3: Configure load balancing in direct server return mode
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Use case 6: Configure load balancing in DSR mode for IPv6 networks by using the TOS field
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Use case 7: Configure load balancing in DSR mode by using IP Over IP
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Use case 10: Load balancing of intrusion detection system servers
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Use case 11: Isolating network traffic using listen policies
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Use case 14: ShareFile wizard for load balancing Citrix ShareFile
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Authentication and authorization
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Configuring a CloudBridge Connector Tunnel between two Datacenters
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Configuring CloudBridge Connector between Datacenter and AWS Cloud
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Configuring a CloudBridge Connector Tunnel Between a Datacenter and Azure Cloud
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Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
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Configuring a CloudBridge Connector Tunnel Between a Citrix ADC Appliance and Cisco IOS Device
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CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Synchronizing Configuration Files in a High Availability Setup
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Restricting High-Availability Synchronization Traffic to a VLAN
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Understanding the High Availability Health Check Computation
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Managing High Availability Heartbeat Messages on a Citrix ADC Appliance
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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 seamless 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 now 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 should be running on software version 11.1 build 49.16 or later.
- You should 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 and result in loss of information about the sessions.
- Session Reliability on a high availabilty 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).
To configure Session reliability from Citrix ADC 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 from Citrix ADC 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).
- In User Name and Password, enter the administrator credentials.
- On the Configuration tab, navigate to System > Settings, and click Change ICA Parameters.
- In the Change ICA Parameters section, select Session Reliability on HA Failover.
- Click OK.
Limitations
- Enabling this feature will result in increased bandwidth 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 HA knob is set to NO, only ACR reconnect mode is supported in Citrix ADC high availability failover scenario. The HA knob does not disable Session Reliability if HDX Insight is disabled.
The Session Reconnect Semantics table is as follows:
Session Reconnect Sematics
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 EnableSRonHAFailover knob to either YES or NO does not make any difference, when HDX Insight is disabled.
Session Reliability on Citrix ADC High Availability Pair
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