Getting Started with Citrix ADC
Deploy a Citrix ADC VPX instance
Optimize Citrix ADC VPX performance on VMware ESX, Linux KVM, and Citrix Hypervisors
Apply Citrix ADC VPX configurations at the first boot of the Citrix ADC appliance in cloud
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
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Deploy a VPX high-availability pair with elastic IP addresses across different AWS zones
Deploy a VPX high-availability pair with private IP addresses across different AWS zones
Configure a Citrix ADC VPX instance to use SR-IOV network interface
Configure a Citrix ADC VPX instance to use Enhanced Networking with AWS ENA
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 a Citrix ADC VPX instance to use Azure accelerated networking
Configure HA-INC nodes by using the Citrix high availability template with Azure ILB
Configure a high-availability setup with Azure external and internal load balancers simultaneously
Configure address pools (IIP) for a Citrix Gateway appliance
Upgrade and downgrade a Citrix ADC appliance
年代olutions 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
Basic components of authentication, authorization, and auditing configuration
On-premises Citrix Gateway as an identity provider to Citrix Cloud
Authentication, authorization, and auditing configuration for commonly used protocols
Troubleshoot authentication and authorization related issues
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Global Server Load Balancing
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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
年代et 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
Use case 15: Configure layer 4 load balancing on the Citrix ADC appliance
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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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Global Server Load Balancing
Notes:
From release 13.0 build 41.x, global server load balancing (GSLB) deployments using the Citrix ADC appliance are fully compliant with DNS flag day 2019.
GSLB功能包含在Citrix ADCdvance and Premium edition licenses. The Citrix ADC option license is supported with the Standard edition.
Citrix ADC appliances configured for GSLB provide disaster recovery and ensure continuous availability of applications by protecting against points of failure in a WAN. GSLB balances the load across data centers by directing client requests to the closest or best performing data center, or to surviving data centers if there is an outage.
In a typical configuration, a local DNS server sends client requests to a GSLB virtual server, to which are bound GSLB services. A GSLB service identifies a load balancing or content switching virtual server, which can be at the local site or a remote site. If the GSLB virtual server selects a load balancing or content switching virtual server at a remote site, it sends the virtual server’s IP address to the DNS server. The DNS server sends it to the client. The client then resends the request to the new virtual server at the new IP.
The GSLB entities that you must configure are the GSLB sites, the GSLB services, the GSLB virtual servers, load balancing or content switching virtual servers, and authoritative DNS (ADNS) services. You must also configure MEP. You can also configure DNS views to expose different parts of your network to clients accessing the network from different locations.
Note:
To take full advantage of GSLB features, use ADC appliances for load balancing or content switching at each data center, so that your GSLB configuration can use the proprietary MEP to exchange site metrics.
How GSLB works
With ordinary DNS, when a client sends a domain name system (DNS) request, it receives a list of IP addresses of the domain or service. Generally, the client chooses the first IP address in the list and initiates a connection with that server. The DNS server uses a technique called DNS round robin to rotate through the IPs on the list. It sends the first IP address to the end of the list and promotes the others after it responds to each DNS request. This technique ensures equal distribution of the load, but it does not support disaster recovery, load balancing based on load or proximity of servers, or persistency.
When you configure GSLB on ADC appliances and enable MEP, the DNS infrastructure is used to connect the client to the data center that best meets the set criteria. The criteria can designate the following:
- Least loaded data center
- Closest data center
- Data center that responds most quickly to requests from the client’s location
- A combination of those metrics and SNMP metrics.
An appliance tracks the location, performance, load, and availability of each data center. It uses these factors to select the data center to send the client request.
The following figure illustrates a basic GSLB topology.
A GSLB configuration consists of a group of GSLB entities on each appliance in the configuration. These entities include GSLB sites, GSLB services, GSLB service groups, GSLB virtual servers, load balancing servers, content switching servers, and ADNS services.
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