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Getting Started with Citrix NetScaler
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Deploy a Citrix NetScaler VPX instance
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Install a Citrix NetScaler VPX instance on Microsoft Hyper-V servers
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Install a NetScaler VPX instance on Linux-KVM platform
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Prerequisites for Installing NetScaler VPX Virtual Appliances on Linux-KVM Platform
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Provisioning the NetScaler Virtual Appliance by using OpenStack
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Provisioning the NetScaler Virtual Appliance by using the Virtual Machine Manager
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Configuring NetScaler Virtual Appliances to Use SR-IOV Network Interface
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Configuring NetScaler Virtual Appliances to use PCI Passthrough Network Interface
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Provisioning the NetScaler Virtual Appliance by using the virsh Program
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Deploying NetScaler VPX Instances on AWS
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Upgrade and downgrade a NetScaler appliance
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Troubleshooting
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Overriding Static Proximity Behavior by Configuring Preferred Locations
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Example of a Complete Parent-Child Configuration Using the Metrics Exchange Protocol
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Configuring Global Server Load Balancing for DNS Queries with NAPTR records
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Using the EDNS0 Client Subnet Option for Global Server Load Balancing
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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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Use source IP address of the client when connecting to the server
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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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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 NetScaler Appliance and Cisco IOS Device
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CloudBridge Connector Tunnel Diagnostics and Troubleshooting
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Troubleshooting
If the responder feature does not work as expected after you have configured it, you can use some common tools to access NetScaler resources and diagnose the problem.
Resources for Troubleshooting
For best results, use the following resources to troubleshoot an integrated cache issue on a NetScaler appliance:
- The ns.conf file
- The relevant trace files from the client and the NetScaler appliance
In addition to the above resources, the following tools expedite troubleshooting:
- The iehttpheaders or a similar utility
- The Wireshark application customized for the NetScaler trace files
Troubleshooting Responder Issues
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Issue
The Responder feature is configured, but the responder action is not working.
Resolution
- Verify that the feature is enabled.
- Check the hit counters of any of the policies to see if the counters are getting incremented.
- Verify that the policies and actions are configured correctly.
- Verify that the actions and policies are bound appropriately.
- Record the packet traces on the client and the NetScaler appliance, and analyze the them to get some pointer to the issue.
- Record the iehttpHeaters packet traces on the client and verify the HTTP requests and responses to get some pointer to the issue.
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Issue
You need to create a maintenance page.
Resolution
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Configure the services and virtual Server.
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Configure a backup virtual server with a service bound to it. This ensures that the status of the Web site is always displayed as UP.
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Configure the primary virtual server to use the backup virtual server as a backup.
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Create a responder action with an appropriate target. Following is an example for your reference:
add responder action sorry_page respondwith q{“HTTP/1.0 200 OK” +”\r\n\r\n” + “<html><body>Sorry, this page is not available</body></html>” + “\r\n”} .
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Create a responder policy and bind the action to it.
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Bind the responder policy to the backup virtual Server.
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