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Deploy a Citrix ADC VPX instance
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
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 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 HA-INC nodes by using the Citrix high availability template with Azure ILB
Configure address pools (IIP) for a Citrix Gateway appliance
Upgrade and downgrade a Citrix ADC appliance
Solutions for Telecom Service Providers
Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
Authentication, authorization, and auditing application traffic
Configuring authentication, authorization, and auditing policies
Configuring Authentication, authorization, and auditing with commonly used protocols
Use an on-premises Citrix Gateway as the identity provider for Citrix Cloud
Troubleshoot authentication issues in Citrix ADC and Citrix Gateway with aaad.debug module
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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 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
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Priority Load Balancing
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Authentication and authorization
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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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Priority Load Balancing
The priority load balancing feature enables you to assign a priority number for each of the services or service groups that are bound to a priority load balancing virtual server. A service or a service group with the lowest number has the highest priority. The application traffic is distributed only to this service or a service group as long as this service or the service group is UP. The service or the service group that is assigned the next priority number becomes operational only when all the services or members in the service group with the highest priority are DOWN. However, when any of the services or a member in the service group with the highest priority becomes available again, the traffic is redirected to that service or the service group.
例如,考虑服务组SVG1, SVG2, and SVG3 that are bound to a priority load balancing virtual server. The maximum number of priority groups is set to three. You assign the priority for each group as follows:
- SVG1 – priority 1
- SVG2 – priority 2
- SVG3 – priority 3
In this scenario, the application traffic is directed to service group SVG1 because this group is assigned the lowest priority number. If all the members in SVG1 are DOWN, the traffic is distributed to service group SVG2 as this group is assigned the next lower priority number. If all the members in SVG2 are also DOWN, the traffic is distributed to SVG3. However, when any of the members in SVG1 is UP, the traffic is redirected to SVG1 because SVG1 is assigned the lowest number and has the highest priority.
Assigning priorities to a service or a service group enables you to upgrade the specific service or service group that has the highest priority, whenever required with minimal or no impact to the production traffic.
Also, if the upgrade is not successful, you can safely switch to the service or the service group that is next in the priority, with minimal or no impact to the production traffic.
The following figure illustrates the priority load balancing feature.
To configure priority load balancing
Note
The Citrix ADC priority load balancing configuration is supported only through the GUI. You cannot configure priority load balancing by using the CLI.
Navigate toTrafficManagement>PriorityLoadBalancing>VirtualServersand specify the protocol for the virtual server, the IP address, and the port number of the virtual server.
In theMaximumPriorityGroupsbox, enter the number of priority services or the service groups that can be bound to this virtual server. Default value is 2, and the maximum priority that can be set is 10. This parameter is noneditable after it is configured.
Note:
After you specify the maximum number of priority groups and clickOK, a content switching virtual server and “n” number of backup load balancing virtual servers are created. The alphabet “n” represents the maximum number of priority groups.
For example, if you have entered the virtual server name as vs1, and have set the maximum priority group as 5, then a content switching virtual server with the name _Pri.LB#vs1#MaxPri=5 and the following 5 load balancing virtual servers are created.
- _Pri.LB#vs1#MaxPri=5_LB1
- _Pri.LB#vs1#MaxPri=5_LB2
- _Pri.LB#vs1#MaxPri=5_LB3
- _Pri.LB#vs1#MaxPri=5_LB4
- _Pri.LB#vs1#MaxPri=5_LB5
After you specify the maximum number of priority groups and clickOK, you are prompted to choose the services or service groups that must be bound to this content switching virtual server.
- To bind services to the virtual server, clickInsertin the Services section. Next, either select an existing service or create a service and set the priority for this service. Also, set the priority number at which this service should be bound.
- To bind service groups to the virtual server, clickInsertin the Service Groups section. Next, either select an existing service group or create a service group and set the priority for this service group. Also, set the priority number at which this service group should be bound.
Repeat step 3, depending on the maximum number of priority groups that you have entered.
Note:
The service or the service group with the highest priority is bound to the load balancing virtual server that represents the highest priority.
For example, if you have assigned priority 1 and 2 to service groups SG_App1 and SG_App2 respectively, then SG_App1 is bound to virtual server _Pri.LB#vs1#MaxPri=5_LB1 and SG_App2 is bound to virtual server _Pri.LB#vs1#MaxPri=5_LB2 created in step 2.
- To change the priority of the service group or service, click the edit icon in the Priority Load Balancing Virtual Server page and change the priority as required.
- You cannot set the load balancing methods and persistence for each virtual server explicitly, because the configuration of all load balancing virtual servers is identical.
From theAdvanced Settingsections, complete the other configuration that meets your requirement.
Important
在优先级负载balancin期间创建的实体g configuration must not be modified from other tabs in the GUI and also from the CLI. It is recommended that you modify the priority load balancing entities from the Priority Load Balancing tab only.
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