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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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Configuring Basic Content Switching
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Content Switching for Diameter Protocol
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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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Content switching for diameter protocol
For Diameter-protocol traffic, you can configure the NetScaler appliance (or virtual appliance) to act as a relay agent that load balances and forwards a packet to the appropriate destination on the basis of the message content (AVP value in the message). Since the appliance does not perform any application-level processing, it provides relaying services for all diameter applications as specified by the configured content switching policies. Therefore, the appliance advertises the Relay Application ID in the capability exchange answer (CEA) message when the client establishes a diameter connection. You must configure a content switching virtual server, load balancing virtual servers, and services to represent the diameter nodes. When a request reaches the content switching virtual server, the virtual server applies the content switching policies associated with that type of request. After evaluating the policies, the content switching virtual server routes the request to the appropriate load balancing virtual server, which sends it to the appropriate service.
A diameter interface provides a connection between the different diameter nodes. The following sample deployment uses Cx and Rx interfaces. A Cx interface provides a connection between a CSCF and an HSS. An Rx interface provides a connection between a CSCF and a PCRF. All the messages reach the NetScaler appliance. Depending on whether the message is for a Cx or an Rx interface, and on the content switching policies defined, the NetScaler appliance selects an appropriate load balancing server pool.
Sample Configuration
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For each entity, create a service, a load balancing server, and bind the service to the virtual server.
add service svc_pcrf[1-3] 1.1.1.1[1-3] DIAMETER 3868 add service svc_hss[1-3] 1.1.1.2[1-3] DIAMETER 3868 add lb vserver vs_rx DIAMETER -persistenceType DIAMETER –persistavpno 263 add lb vserver vs_cx DIAMETER -persistenceType DIAMETER –persistavpno 263 bind lb vserver vs_rx svc_pcrf[1-3] bind lb vserver vs_cx svc_hss[1-3]
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Create a content switching virtual server and two actions (one for each load balancing virtual server). Create two content switching policies and bind these policies to the content switching virtual server, specifying a priority for each policy.
add cs vserver cs_diameter DIAMETER 10.1.1.10 3868 add cs action cx_action -targetLBVserver vs_cx add cs action rx_action –targetLBvserver vs_rx add cs policy cx_policy -rule "DIAMETER.REQ.AUTH_APPLICATION_ID.EQ(16777216)" -action cx_action add cs policy rx_policy -rule "DIAMETER.REQ.AUTH_APPLICATION_ID.EQ(16777236)" -action rx_action bind cs vserver cs_diameter -policyName rx_policy -priority 100 bind cs vserver cs_diameter -policyName cx_policy -priority 110
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