Getting Started with Citrix ADC
Deploy a Citrix ADC VPX instance
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
Deploy a Citrix ADC VPX instance 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
配置HA-INCnodes by using the Citrix high availability template with Azure ILB
配置HA-INCnodes by using the Citrix high availability template for internet-facing applications
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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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
年代et 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 12: Configure Citrix Virtual Desktops for load balancing
Use case 13: Configure Citrix Virtual Apps for load balancing
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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Configuring a CloudBridge Connector Tunnel between two Datacenters
Configuring CloudBridge Connector between Datacenter and AWS Cloud
配置一个CloudBridge连接器之间的隧道a Citrix ADC Appliance and Virtual Private Gateway on AWS
Configuring CloudBridge Connector Tunnel between Datacenter and SoftLayer Enterprise Cloud
配置一个CloudBridge连接器之间的隧道a Citrix ADC Appliance and Cisco IOS Device
配置一个CloudBridge连接器之间的隧道a Citrix ADC Appliance and Fortinet FortiGate Appliance
CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Enable cleanup of virtual server connections
Under certain conditions, you can configure the downStateFlush setting to immediately terminate existing connections when a service or a virtual server is marked DOWN. Terminating existing connections frees resources, and in certain cases speeds recovery of overloaded load balancing setups.
The state of a virtual server depends on the states of the services bound to it. The state of each service depends on the responses of the load balanced servers to probes and health checks sent by the monitors that are bound to that service. Sometimes the load balanced servers do not respond. If a server is slow or busy, monitoring probes can time out. If repeated monitoring probes are not answered within the configured timeout period, the service is marked DOWN.
A virtual server is marked DOWN only when all services bound to it are marked DOWN. When a virtual server goes DOWN, it terminates all connections, either immediately or after allowing existing connections to complete.
Do not enable the downStateFlush setting on those application servers that must complete their transactions. You can enable this setting on Web servers whose connections can safely be terminated when they marked DOWN.
The following table summarizes the effect of this setting on an example configuration consisting of a virtual server, Vserver-LB-1, with one service bound to it, Service-TCP-1. In the table, E and D denote the state of the downStateFlush setting: E means Enabled, and D means Disabled.
Vserver-LB-1 | 年代ervice-TCP-1 | 年代tate of connections |
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E | E | Both client and server connections are terminated. |
E | D | For some service types, such as TCP, for which the Citrix ADC appliance does not support connection reuse, both client and server connections are terminated. For service types, such as HTTP, for which the appliance supports connection reuse, both client and server connections are terminated only if a transaction is active on those connections. If a transaction is not active, only client connections are terminated. |
D | E | For some service types, such as TCP, for which the Citrix ADC appliance does not support connection reuse, both client and server connections are terminated. For service types, such as HTTP, for which the appliance supports connection reuse, both client and server connections are terminated only if a transaction is active on those connections. If a transaction is not active, only server connections are terminated. |
D | D | Neither client nor server connections are terminated. |
If you want to disable a service only when all the established connections are closed by the server or the client, you can use the graceful shutdown option. For information about the graceful shutdown of a service, seeGraceful Shutdown of Services.
To configure the down state flush setting on a virtual server by using the CLI
At the command prompt, type:
set lb vserver -downStateFlush
Example:
set lb vserver Vserver-LB-1 -downStateFlush enabled
To configure the down state flush setting on a virtual server by using the GUI
- Navigate toTraffic Management > Load Balancing > Virtual Servers, and open the virtual server.
- In Advanced Settings, click Traffic Settings, and select Down State Flush.
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