Getting Started with Citrix ADC
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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
部署a Citrix ADC VPX instance on AWS
部署a VPX high-availability pair with elastic IP addresses across different AWS zones
部署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
部署a Citrix ADC VPX instance on Microsoft Azure
Network architecture for Citrix ADC VPX instances on Microsoft Azure
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
配置HA-INC节点使用Citrix高availability template for internet-facing applications
Configure a high-availability setup with Azure external and internal load balancers simultaneously
Configure address pools (IIP) for a Citrix Gateway appliance
配置多个IP地址的Citrix ADC VPX instance in standalone mode by using PowerShell commands
Upgrade and downgrade a Citrix ADC appliance
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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Active-active site deployment
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
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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Active-active site deployment
An active-active site consists of multiple active data centers. Client requests are load balanced across active data centers. This deployment type can be used when you have a need for global distribution of traffic in a distributed environment.
All the sites in an active-active deployment are active, and all the services for a particular application/domain are bound to the same GSLB virtual server. Sites exchange metrics through the Metrics Exchange Protocol (MEP). Site metrics exchanged between the sites include the status of each load balancing and content switching virtual server, current number of connections, current packet rate, and current bandwidth usage. The Citrix ADC appliance needs this information to perform load balancing across the sites.
An active-active deployment can include a maximum of 32 GSLB sites, because MEP cannot synchronize more than 32 sites. No backup sites are configured in this deployment type.
The Citrix ADC appliance sends client requests to the appropriate GSLB site as determined by the GSLB method specified in the GSLB configuration.
For an active-active deployment, you can configure the following GSLB methods.
- Round Robin
- Least Connections
- Least Response Time
- Least Bandwidth
- Least Packets
- 年代ource IP Hash
- Custom Load
- Round Trip Time (RTT)
- 年代tatic Proximity
Note:
- If MEP is disabled, the following GSLB methods default to the Round Robin method. - RTT - Least Connections - Least Bandwidth - Least Packets - Least Response Time
- In the static proximity GLSB method, the appliance sends the request to the IP address of the site that best matches the proximity criteria.
- In the Round Trip Time method, the dynamic round trip time (RTT) values are to select the IP address of the best performing site. RTT is a measure of the delay in the network between the client’s local DNS server and a data resource.
GSLB active-active data center topology
In the diagram, Site 1 and Site 2 are active GLSB sites.
When the client sends a DNS request, it lands in one of the active sites.
If Site 1 receives the client request, the GSLB virtual server in Site 1 selects a load balancing or content switching virtual server and sends the virtual server’s IP address to the DNS server, which sends it to the client. The client then resends the request to the new virtual server at the new IP address.
As both sites are active, the GSLB algorithm evaluates the services at both sites when making a selection as determined by the configured GSLB method.
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In this article
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