How session is maintained in load balancing?
Load balancer session persistence boosts performance by configuring a backend server to work efficiently with user requests. This kind of load balancer sits between users and the website’s server group and implements logic that connects specific servers to user sessions for as long as is needed.
What is session affinity in a load balancer?
Session affinity is a feature available on load balancers that allows all subsequent traffic and requests from an initial client session to be passed to the same server in the pool. Session affinity is also referred to as session persistence, server affinity, server persistence, or server sticky.
What is meant by load balancing?
Load balancing is defined as the methodical and efficient distribution of network or application traffic across multiple servers in a server farm. Each load balancer sits between client devices and backend servers, receiving and then distributing incoming requests to any available server capable of fulfilling them.
What is flow based load balancing?
Flow-based load balancing identifies different flows of traffic based on the key fields in the data packet. For example, IPv4 source and destination IP addressees can be used to identify a flow. The various data traffic flows are then mapped to the different member links of a port channel.
What is load balancing with example?
Load Balancing Techniques: For example, if you have three application servers: the first client request to the first application server in the list, the second client request to the second application server, the third client request to the third application server, the fourth to the first application server and so on.
What is VLAN load balancing?
Load Balancing of VLAN Traffic Generally, redundant links are used on an Ethernet switching network to provide link backup and enhance network reliability. In Figure 1, the two links between SwitchA and SwitchB can forward traffic of VLAN 10 and VLAN 20. To prevent loops on the network, enable STP on the two switches.
What is per packet load balancing?
Per-packet load-balancing means that the device sends packets in sequence alternately over the links used for load balancing, as shown in Figure 8-6. Load is evenly distributed over the links.
Why do I need session based load balancing in my router?
You may switch to Session-based Load Balancing which allows the router to distribute sessions of a single connection among all the WAN links, and provide the LAN clients Internet speed faster than a single link can do. Learn More
How does DrayTek session based load balancing work?
Session-Based Load Balancing When a DrayTek router is configured to load balance using ” Session-Based ” mode, sessions are assigned to a WAN connection (Internet feed) on a per-session basis, meaning that multiple sessions to the same remote server can make use of each WAN interface on the router.
Why is load balancing referred to as IP-based?
In this mode, the load balancing is referred to as ” IP-Based ” because the assignment of each session is based on the remote IP address; access to a remote server will be sent through one WAN for all sessions to that server.
Why are sticky sessions used in load balancing?
To use Sticky Sessions we configure the load balancer to send the request for a specific session to the server that has served the first request. This can create a problem in the Load Balanced environment because it may be possible with Sticky Sessions that some of the servers are fully loaded and some are actually free at that time.