Load Balancing Nhóm thực hiện: 0512288 - Ngô Vĩnh San 0512279 - Hoàng Trung Quân 0512113 - Nguyễn Phước Hiền

Load Balancing What is Load Balancing??? Why we need Load Balancing ??? How its work? And in Windows Server 2003?

What is Load Balancing???

Why we need Load Balancing ???

How its work?

And in Windows Server 2003?

What is Load Balancing? What is Load Balancing?

Why we need Load Balancing? High Availability High Reliability High Scalability

High Availability

High Reliability

High Scalability

Round Robin DNS 203.34.23.3 203.34.23.4 203.34.23.5 Internet DNS server

203.34.23.3 203.34.23.4 203.34.23.5

Hardware Load Balancer Requests Hardware Load Balancer Clusters 203.34.23.3 203.34.23.4 203.34.23.5 Virtual IP : 203.34.23.100 Based on information in the header, cookies, or URL data Rewrite the request’s header

How NLB works? Create a virtual network adapter has its own IP & MAC Using own local data

Create a virtual network adapter

has its own IP & MAC

Using own local data

How NLB Works (Cont)? As a filter Calculate the host should be reply Each host performs the same calculations independently Decide should reply or not

As a filter

Calculate the host should be reply

Each host performs the same calculations independently

Decide should reply or not

How NLB works(Cont)? Unicast mode Replace MAC address Multicast mode Replace MAC address, but retain the MAC original Heartbeat message Detect a failure host Detect a new host

Unicast mode

Replace MAC address

Multicast mode

Replace MAC address, but retain the MAC original

Heartbeat message

Detect a failure host

Detect a new host

And in Windows Server 2003? Server 1 Server 2 192.168.1.10/24 192.168.1.11/24 192.168.65.129/24 192.168.65.130/24 Internet 192.168.1.100/24 Switch 2 Switch 1

NLB Thank You – Question?