Getting Started with Citrix ADC
德ploy 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
德ploy 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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Configure metrics exchange protocol
Use case: Deployment of domain name based autoscale service group
Use case: Deployment of IP address based autoscale service group
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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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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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Configure metrics exchange protocol
The data centers in a GSLB setup exchange metrics with each other through the metrics exchange protocol (MEP), which is a proprietary protocol for Citrix ADC appliance. The exchange of the metric information begins when you create a GSLB site. These metrics comprise load, network, and persistence information.
议员需要健康检查的数据中心s to ensure their availability. A connection for exchanging network metric (round-trip time) can be initiated by either of the data centers involved in the exchange, but a connection for exchanging site metrics is always initiated by the data center with the lower IP address. By default, the data center uses a subnet IP address (SNIP) to establish a connection to the IP address of a different data center. However, you can configure a specific SNIP, virtual IP (VIP) address, or the NSIP address, as the source IP address for metrics exchange. The communication process between GSLB sites uses TCP port 3011 or 3009, so this port must be open on firewalls that are between the Citrix ADC appliances.
Note: You can configure a SNIP or a GSLB site IP address as the source IP address for metrics exchange. For more information, seeConfigure source IP address for an RPC node.
If the source and target sites (the site that initiates a MEP connection and the site that receives the connection request, respectively) have both private and public IP addresses configured, the sites exchange MEP information by using the public IP addresses.
You can also bind monitors to check the health of remote services as described in “Monitoring GSLB Services.” When monitors are bound, metric exchange does not control the state of the remote service. If a monitor is bound to a remote service and metric exchange is enabled, the monitor controls the health status. Binding the monitors to the remote service enables the Citrix ADC appliance to interact with a non-citrix ADC load balancing device. The Citrix ADC appliance can monitor non-citrix ADC devices but cannot perform load balancing on them unless monitors are bound to all GSLB services and only static load balancing methods (such as the round robin, static proximity, or hash-based methods) are used.
With NetScaler release 11.1.51.x or later, to avoid unnecessary disruption of services, you can set a time delay for marking GSLB services as DOWN when a MEP connection goes DOWN.
MEP state in a high availability setup
In a high availability setup, the primary node establishes connections with the remote sites and the MEP state is not synchronized from the primary node to secondary nodes. Therefore, the MEP state in secondary node remains DOWN. When the secondary node becomes primary, it establishes MEP connections with the new GSLB site and updates the MEP state accordingly.
Enable site metrics exchange
Site metrics exchanged between the GSLB sites include the status of each load balancing, or content switching virtual server, the current number of connections, the current packet rate, and current bandwidth usage information.
The Citrix ADC appliance needs this information to perform load balancing between the sites. The site metric exchange interval is 1 second. A remote GSLB service must be bound to a local GSLB virtual server to enable the exchange of site metrics with the remote service.
To enable or disable site metrics exchange by using the command line interface
At a command prompt, type the following commands to enable or disable site metric exchange and verify the configuration:
设置gslb网站< siteName > -metricExchange(|启用DISABLED) show gslb site**
Example:
set gslb site Site-GSLB-East-Coast -metricExchange ENABLED set gslb site Site-GSLB-East-Coast -metricExchange DISABLED show gslb site Site-GSLB-East-Coast
To enable or disable site metric exchange by using the GUI
- Navigate toTraffic Management>GSLB>Sites, and select the site.
- In theConfigure GSLB Sitedialog box, select theMetric Exchangeoption.
Enable network metric exchange
If your GSLB sites use the round-trip time (RTT) load balancing method, you can enable or disable the exchange of RTT information about the client’s local DNS service. This information is exchanged every 5 seconds.
For details about changing the GSLB method to a method based on RTT, see “GSLB Methods.”
To enable or disable network metric information exchange by using the command line interface
At the command prompt, type the following commands to enable or disable network metric information exchange and verify the configuration:
set gslb site -nwmetricExchange (ENABLED|DISABLED) show gslb site <
Example:
set gslb site Site-GSLB-East-Coast -nwmetricExchange ENABLED set gslb site Site-GSLB-East-Coast -nwmetricExchange DISABLED show gslb site Site-GSLB-East-Coast
To enable or disable network metric information exchange by using the GUI
- Navigate toTraffic Management>GSLB>Sites.
- In theConfigure GSLB Sitedialog box, select theNetwork Metric Exchangeoption.
Configuring a time delay for the GSLB services to be marked as DOWN when a MEP connection goes DOWN
If the status of a MEP connection to a remote site changes to DOWN, the status of every GSLB service on that remote site is marked as DOWN, although the site might not actually be DOWN.
You can now set a delay to allow some time for reestablishment of the MEP connection before the site is marked as DOWN. If the MEP connection is back UP before the delay expires, the services are not affected.
例如,如果您设置延迟10,GSLB services are marked as DOWN until the MEP connection has been DOWN for 10 seconds. If the MEP connection is back UP within 10 seconds, the GSLB services remain in the UP state.
Note: This delay is applicable only to services not bound to a monitor. The delay does not affect the trigger monitors.
To set a time delay by using the command line interface
At the command prompt, type the following command:
set gslb parameter** - GSLBSvcStateDelayTime
Example:
set gslb parameter- GSLBSvcStateDelayTime 10
Note
In a hierarchical deployment (parent-child topology), if you configure the GSLB service on both the parent and child sites, set the GSLB parameter on both the parent and child sites. If you do not configure the GSLB service on the child site, set the GSLB parameter only on the parent site.
To set a time delay by using the GUI
- Navigate toConfiguration>Traffic Management>GSLB>Change GSLB Settings.
- In theGSLB Service State Delay Time (secs)box, type the time delay in seconds.
Enable persistence information exchange
You can configure Citrix ADC appliance to provide persistent connections, so that a client transmission to any virtual server in a group can be directed to a server that has received previous transmissions from the same client.
You can enable or disable the exchange of persistence information at each site. This information is exchanged once every 5 seconds between Citrix ADC appliances participating in GSLB.
For details about configuring persistence, seeConfiguring Persistent Connections.
To enable or disable persistence information exchange by using the command line interface
At the command prompt, type the following commands to enable or disable persistence-information exchange and verify the configuration:
set gslb site -sessionExchange (ENABLED|DISABLED) show gslb site**
Example:
set gslb site Site-GSLB-East-Coast -sessionExchange ENABLED set gslb site Site-GSLB-East-Coast -sessionExchange DISABLED show gslb site Site-GSLB-East-Coast
To enable or disable persistence information exchange by using the GUI
- Navigate toTraffic Management>GSLB>Sites, and double-click the site.
- In theConfigure GSLB Sitedialog box, select or clear thePersistence Session Entry Exchangecheck box.
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