LOGO Load Balancing Nhóm thực hiện: 0512288 - Ngô Vĩnh San 0512279 - Hoàng Trung Quân 0512113 - Nguyễn Phước Hiền
LOGO
Load Balancing
Nhóm thực hiện:0512288 - Ngô Vĩnh San
0512279 - Hoàng Trung Quân0512113 - 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?
What is
Load Balancing?
Why we need Load Balancing?
High Availability
High Reliability
High Scalability
Round Robin DNS
203.34.23.3 203.34.23.4 203.34.23.5
Internet
DNS server
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
How NLB Works (Cont)?
As a filter Calculate the host should be
replyEach 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 originalHeartbeat 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?