Getting Started with Citrix ADC
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
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 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
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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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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Troubleshooting
If the content switching feature does not work as expected after you have configured it, you can use some common tools to access Citrix ADC resources and diagnose the problem.
Resources for Troubleshooting Content Switching
For best results, use the following resources to troubleshoot a content switching issue on a Citrix ADC appliance:
- Configuration file
- Relevant newnslog file
- Trace files
- Network topology diagram for the network setup of the customer
- Citrix documentation, such as release notes, Knowledge Center articles, and eDocs
In addition to the above resources, the following tools expedite troubleshooting:
- The iehttpheaders or a similar utility
- The Wireshark application customized for the Citrix ADC trace files
- An SSH utility for command line access
- A HyperTerminal utility to access the console
Troubleshooting Content Switching Issues
The most common content switching issues involve the content switching feature not working at all, or working only intermittently, and Service Unavailable responses.
Issue
The content switching feature is not functioning.
Resolution
Check the configuration as follows:
- Verify that the appliance is licensed for content switching.
- Verify that the feature is enabled.
- From the configuration file, verify that valid content switching policies are correctly bound to the load balancing virtual servers.
Issue
Client receives a 503 - Service Unavailable response.
Resolution
- Verify the URL and policy bindings. The client receives the 503 response when none of the policies you have configured is evaluated and no default load balancing virtual server is defined and bound to the content switching virtual server.
- From the configuration, verify the policies and URL being accessed by the client.
- Verify that for every type of request the respective policy is evaluated. If the policy is not evaluated, check the policy expression and update it if necessary.
- Verify the URL and HTTP request and response headers. To do so, record an HTTPHeader trace and, if necessary, record the packet traces on the appliance and the client.
Issue
Intermittently, the content switching feature is not working as expected.
Resolution
Study the network topology diagram, if available, of the setup to understand the various devices installed between the client and the server(s).
Verify the configuration and policy bindings. Make sure that the URL in the policy expression matches to the one in the client request.
Verify that appropriate priorities are assigned to the policies. An incorrect precedence or priority assigned to a policy can cause a problem.
Run the following commands to verify the bindings and the values of the policy hit counters in the output of the commands:
show cs vserver
show cs policy
stat cs vserver
Using iehttpheaders or a similar utility, determine whether the HTTP headers for the requests or responses provide any pointers to the issue.
Check the release notes and Knowledge Center articles.
If the issue is still not resolved, contact Citrix Technical Support with appropriate data for further investigation.
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