Start Learning Citrix NetScaler - Part 2- Introduction Basics
Hello Visitors
There are few basic facts which should be clarified in starting for the better understanding of NS.
- What is Service?
- What is Vserver?
- What is SNIP?
- What is VIP?
- What is MIP?
- What is NSIP?
Lets Start
1.Service: - Service term is used in NS to configure the integration between NetScaler & backend Server for application delivery. Service is consist of Application or Web Server which runs outside NetScaler. It includes Name, IP Address, Protocol and ports
- Service get bound with VServer.
Name - Name of backend server (for identification so could be different but better to keep same)
Ip Address - Ip address of backend Server
Protocol:- HTTP or HTTPS or TFTP or others
Ports:- TCP or UDP
2. VServer:- VServer is used to handle the direct connection coming to VIP between client machines and Backend load-balanced Service. VIP is mapped with VServer and consist of Name, IP Address, Protocol, and port. VServer is hosted on NetScaler itself and can perform compression, Traffic redirection tasks.
- VIP is owned by NetScaler.
- The client connects to VIP
- VServer performs load balancing via Service mapped with VServer.
3. SNIP:- SNIP is called as subnet IP which is assigned to NetScaler and used for connecting to backend service from particular subnets.
it helps in avoiding IP routing at the network side and each service subnet should have SNIP assigned to Netscaler to connect the incoming traffic.
example: you should have 5 SNIP assigned to NS if you have service from 5 different subents.
4. MIP:- MIP is called as mapped ip address and used for traffic routing for any service subnet if SNIP is not defined in NS. or in other words default IP address for connecting to backend server when SNIP is not defined.
SNIP / MIP:- it originates connection to backend Server and don't listen for a new connection.
VIP and SNIP or MIP are opposite to each other.
5. NSIP:- Its called as NetScaler IP and used for connecting to NetScaler Interface for mgmt purpose.
Keep visiting for next article -- coming soon
Thanks
Amit Kumar Gupta
CCA in XenApp/XenDesktop/XenServer,Google Cloud Architect, MCSE, ITIL, Vmware Certified.
https://www.linkedin.com/in/amit-kumar-gupta-5321a527/