modified on 6 July 2014 at 08:30 ••• 110,741 views

Load Balancing

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Contents

Introduction

Load Balancing is methology with aim to spread traffic across multiple links to get better links usage. This can be done one per-packet or per-connection basis.

Method Per-connection Per-packet
Firewall marking Yes Yes
ECMP Yes No
PCC Yes No
Nth Yes Yes
Bonding No Yes
OSPF Yes No
BGP Yes No

Methods

Firewall marking

This method use firewall packet marking to select one from multiple gateways.

ECMP (Equal Cost Multi-Path)

This method use multiple gateway with same cost.

PCC (Per Connection Classifier)

Nth

Bonding

Can combine multiple links to get link with higher speed.

OSPF

Two or more links are setup with dynamic routing protocol OSPF with equal cost. Then equal multipath routing is used.

BGP

External links