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Getting Started with NetScaler
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Deploy a NetScaler VPX instance
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Optimize NetScaler VPX performance on VMware ESX, Linux KVM, and Citrix Hypervisors
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Apply NetScaler VPX configurations at the first boot of the NetScaler appliance in cloud
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Configure simultaneous multithreading for NetScaler VPX on public clouds
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Install a 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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Configure a NetScaler VPX on KVM hypervisor to use Intel QAT for SSL acceleration in SR-IOV mode
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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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Provisioning the NetScaler virtual appliance with SR-IOV on OpenStack
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Configuring a NetScaler VPX instance on KVM to use OVS DPDK-Based host interfaces
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Deploy a NetScaler VPX instance on AWS
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Deploy a VPX high-availability pair with elastic IP addresses across different AWS zones
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Deploy a VPX high-availability pair with private IP addresses across different AWS zones
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Protect AWS API Gateway using the NetScaler Web Application Firewall
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Configure a NetScaler VPX instance to use SR-IOV network interface
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Configure a NetScaler VPX instance to use Enhanced Networking with AWS ENA
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Deploy a NetScaler VPX instance on Microsoft Azure
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Network architecture for NetScaler VPX instances on Microsoft Azure
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Configure multiple IP addresses for a NetScaler VPX standalone instance
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Configure a high-availability setup with multiple IP addresses and NICs
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Configure a high-availability setup with multiple IP addresses and NICs by using PowerShell commands
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Deploy a NetScaler high-availability pair on Azure with ALB in the floating IP-disabled mode
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Configure a NetScaler VPX instance to use Azure accelerated networking
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Configure HA-INC nodes by using the NetScaler high availability template with Azure ILB
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Configure a high-availability setup with Azure external and internal load balancers simultaneously
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Configure a NetScaler VPX standalone instance on Azure VMware solution
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Configure a NetScaler VPX high availability setup on Azure VMware solution
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Configure address pools (IIP) for a NetScaler Gateway appliance
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Deploy a NetScaler VPX instance on Google Cloud Platform
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Deploy a VPX high-availability pair on Google Cloud Platform
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Deploy a VPX high-availability pair with external static IP address on Google Cloud Platform
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Deploy a single NIC VPX high-availability pair with private IP address on Google Cloud Platform
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Deploy a VPX high-availability pair with private IP addresses on Google Cloud Platform
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Install a NetScaler VPX instance on Google Cloud VMware Engine
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Solutions for Telecom Service Providers
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Load Balance Control-Plane Traffic that is based on Diameter, SIP, and SMPP Protocols
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Provide Subscriber Load Distribution Using GSLB Across Core-Networks of a Telecom Service Provider
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Authentication, authorization, and auditing application traffic
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Basic components of authentication, authorization, and auditing configuration
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Web Application Firewall protection for VPN virtual servers and authentication virtual servers
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On-premises NetScaler Gateway as an identity provider to Citrix Cloud
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Authentication, authorization, and auditing configuration for commonly used protocols
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Troubleshoot authentication and authorization related issues
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Configure DNS resource records
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Configure NetScaler as a non-validating security aware stub-resolver
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Jumbo frames support for DNS to handle responses of large sizes
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Caching of EDNS0 client subnet data when the NetScaler appliance is in proxy mode
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Use case - configure the automatic DNSSEC key management feature
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Use Case - configure the automatic DNSSEC key management on GSLB deployment
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Persistence and persistent connections
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Configure sessionless load balancing virtual servers
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Insert IP address and port of a virtual server in the request header
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Use a source port from a specified port range for backend communication
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Use IPv6 link local addresses on server side of a load balancing setup
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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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Retrieve location details from user IP address using geolocation database
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Use source IP address of the client when connecting to the server
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Use client source IP address for backend communication in a v4-v6 load balancing configuration
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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 12: Configure Citrix Virtual Desktops for load balancing
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Use case 13: Configure Citrix Virtual Apps and Desktops for load balancing
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Use case 14: ShareFile wizard for load balancing Citrix ShareFile
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Use case 15: Configure layer 4 load balancing on the NetScaler appliance
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Authentication and authorization for System Users
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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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Configure sessionless load balancing virtual servers
When the NetScaler appliance performs load balancing, it creates and maintains sessions between clients and servers. The maintenance of session information places a significant load on the appliance resources, and sessions might not be needed in scenarios such as a direct server return (DSR) setup and the load balancing of intrusion detection systems (IDS). To avoid creating sessions when they are not necessary, you can configure a virtual server on the appliance for sessionless load balancing. In sessionless load balancing, the appliance carries out load balancing on a per-packet basis.
Sessionless load balancing can operate in MAC-based forwarding mode or IP-based forwarding mode.
For MAC-based forwarding, the IP address of the sessionless virtual server must be specified on all the physical servers to which the traffic is forwarded.
For IP-based forwarding in sessionless load balancing, the IP address and port of the virtual server need not be specified on the physical servers, because this information is included in the forwarded packets. When forwarding a packet from the client to the physical server, the appliance leaves client details such as IP address and port unchanged and adds the IP address and port of the destination.
Supported setup
NetScaler sessionless load balancing supports the following service types and load balancing methods:
Service Types
- ANY for MAC-based redirection
- ANY, DNS, and UDP for IP-based redirection
Load Balancing Methods
- Round Robin
- Least Bandwidth
- LRTM (Least response time method)
- Source IP Hash
- Destination IP Hash
- Source IP Destination IP Hash
- Source IP Source Port Hash
- Custom Load
Limitations
Sessionless load balancing has the following limitations:
- The appliance must be deployed in two-arm mode.
- A service must be bound to only one virtual server.
- Sessionless load balancing is not supported for service groups.
- Sessionless load balancing is not supported for domain based services (DBS services).
- Sessionless load balancing in the IP mode is not supported for a virtual server that is configured as a backup to a primary virtual server.
- You cannot enable spillover mode.
- For all the services bound to a sessionless load balancing virtual server, the Use Source IP (USIP) option must be enabled.
- For a wildcard virtual server or service, the destination IP address is not changed.
Note:
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While configuring a virtual server for sessionless load balancing, explicitly specify a supported load balancing method. The default method, Least Connection, cannot be used for sessionless load balancing.
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To configure sessionless load balancing in MAC-based redirection mode on a virtual server, the MAC-based forwarding option must be enabled on the NetScaler appliance.
To add a sessionless virtual server by using the CLI
At the command prompt, type the following commands to add a sessionless virtual server and verify the configuration:
add lb vserver <name>@ <serviceType> <IPAddress>@ <port> -m <redirectionMode> -sessionless <(ENABLED|DISABLED)> -lbMethod <load_balancing_method>
show lb vserver <name>
<!--NeedCopy-->
Example:
add lb vserver sesslessv1 any 11.11.12.123 54 -sessionless ENABLED -lbMethod roundrobin -m ip
Done
show lb vserver sesslessv1
sesslessv1 (11.11.12.123:54) - ANY Type: ADDRESS
State: DOWN
...
Effective State: DOWN
Client Idle Timeout: 120 sec
Down state flush: ENABLED
...
Persistence: NONE
Sessionless LB: ENABLED
Connection Failover: DISABLED
L2Conn: OFF
1) Policy : cmp_text Priority:8680 Inherited
2) Policy : cmp_nocmp_ie60 Priority:8690 Inherited
<!--NeedCopy-->
To configure sessionless load balancing on an existing virtual server
At the command prompt, type:
set lb vserver <name>@ -m <redirectionMode> -sessionless <(ENABLED|DISABLED)> -lbMethod <load_balancing_method>
<!--NeedCopy-->
Example
set lb vserver sesslessv1 -m mac -sessionless ENABLED -lbmethod lrtm
Done
<!--NeedCopy-->
Note
For a service that is bound to a virtual server on which the
-m MAC
option is enabled, you must bind a non-user monitor.
To configure a sessionless virtual server by using the GUI
- Navigate to Traffic Management > Load Balancing > Virtual Servers.
- Open the virtual server, and in Advanced Settings, click Traffic Settings, and then select Sessionless Load Balancing.
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