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Tier Architectures

 

TWO-TIER ARCHITECTURE

TWO-TIER ARCHITECTURE IS SIMILAR TO BASIC CLIENT SERVER MODEL. THE APPLICATION AT THE CLIENT END DIRECTLY COMMUNICATION WITH THE DATABASE AT THE SERVER SIDE. THE APPLICATION ON THE CLIENT SIDE ESTABLISHED A CONNECTION WITH THE SERVER SIDE IN ORDER TO COMMUNICATE WITH DBMS.

AN ADVANTAGES OF THE TYPE IS THAT MAINTENANCE AND UNDERSTANDING IS EASIER COMPATIBLE WITH EXISTING SYSTEM HOWEVER THE MODEL GIVES POOR PERFORMANCE WITH THREE ARE A LARGE NUMBER OF USERS.





THREE-TIER ARCHITECTURE

IN THIS TYPE THERE IS ANOTHER LAYER BETWEEN THE CLIENT AND THE SERVER THE CLIENT DOES NOT DIRECTLY COMMUNICATE WITH THE SERVER INSTEAD IN INTERACTS WITH AN APPLICATION SERVER WHICH FURTHER COMMUNICATION WITH THE DATABASE SYSTEM AND THE QUERY PROCESSING AND TRANSACTION MANAGEMENT TAKE PLACE THE INTERMEDIATOR LAYER ACT AS A MEDIUM FOR EXCHANGE FOR PARTIALLY PROCESS DATA BETWEEN SERVER AND CLIENT THIS TYPE OF ARCHITECTURE IS USED IN CASE OF LARGE WEB APPLICATION.





SPIN-LEAF ARCHITECTURE

LEAF SWITCH

A LEAF SWITCH IS A TYPE OF SWITCH THAT IS USED IN A SPINE-LEAF NETWORK ARCHITECTURE. LEAF SWITCHES ARE RESPONSIBLE FOR CONNECTING SERVERS AND OTHER NETWORK DEVICES TO THE NETWORK. THEY ALSO PROVIDE LAYER 2 SWITCHING AND LAYER 3 ROUTING SERVICES.

IN A SPINE-LEAF NETWORK ARCHITECTURE, LEAF SWITCHES ARE CONNECTED TO SPINE SWITCHES IN A FULL-MESH TOPOLOGY. THIS MEANS THAT EACH LEAF SWITCH IS CONNECTED TO EVERY SPINE SWITCH. THIS DESIGN PROVIDES HIGH BANDWIDTH AND REDUNDANCY FOR TRAFFIC BETWEEN LEAF SWITCHES.

LEAF SWITCHES ARE TYPICALLY HIGH-PERFORMANCE SWITCHES WITH A LARGE NUMBER OF PORTS. THEY ALSO HAVE A WIDE RANGE OF FEATURES, SUCH AS SUPPORT FOR VIRTUALIZATION, SECURITY, AND QOS.

LEAF SWITCHES ARE A KEY COMPONENT OF SPINE-LEAF NETWORK ARCHITECTURES. THEY PROVIDE THE HIGH BANDWIDTH AND REDUNDANCY NEEDED TO SUPPORT MODERN DATA CENTERS. THEY ALSO OFFER A WIDE RANGE OF FEATURES THAT MAKE THEM IDEAL FOR ENTERPRISE NETWORKS.

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SPIN SWITCH

A SPINE SWITCH IS A TYPE OF SWITCH THAT IS USED IN A SPINE-LEAF NETWORK ARCHITECTURE. SPINE SWITCHES ARE RESPONSIBLE FOR CONNECTING LEAF SWITCHES TOGETHER AND PROVIDING LAYER 3 ROUTING SERVICES.

IN A SPINE-LEAF NETWORK ARCHITECTURE, SPINE SWITCHES ARE CONNECTED TO EACH OTHER IN A FULL-MESH TOPOLOGY. THIS MEANS THAT EACH SPINE SWITCH IS CONNECTED TO EVERY OTHER SPINE SWITCH. THIS DESIGN PROVIDES HIGH BANDWIDTH AND REDUNDANCY FOR TRAFFIC BETWEEN SPINE SWITCHES.

SPINE SWITCHES ARE TYPICALLY HIGH-PERFORMANCE SWITCHES WITH A LARGE NUMBER OF PORTS. THEY ALSO HAVE A WIDE RANGE OF FEATURES, SUCH AS SUPPORT FOR VIRTUALIZATION, SECURITY, AND QOS.

SPINE SWITCHES ARE A KEY COMPONENT OF SPINE-LEAF NETWORK ARCHITECTURES. THEY PROVIDE THE HIGH BANDWIDTH AND REDUNDANCY NEEDED TO SUPPORT MODERN DATA CENTERS. THEY ALSO OFFER A WIDE RANGE OF FEATURES THAT MAKE THEM IDEAL FOR ENTERPRISE NETWORKS.


TOPOLOGY VIEW OF SPIN-LEAF ARCHITECTURE


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DIFFERENCE BETWEEN LEAF AND SPIN SWITCH



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