RTM-ATCA-SXXX Overview

4.8Link aggregation and bonding

The ATCA-S201 supports 802.3ad link aggregation also known as “bonding”. Bonding allows you to aggregate multiple Ethernet ports into a single group, effectively combining the bandwidth into a single connection. For example, you can aggregate the ATCA base channel ports (1 Gb/s each) into a trunk group, providing 2Gb/s cumulative bandwidth, fault tolerance and load balancing.

Base channel bonding

 

 

Base channel

example

Switch 1

 

bonding

Eth0

Eth0

Host

 

Bond0

 

 

Bond0

Eth1

Switch 2

Eth1

 

Storage

Host Blade

Blade

 

The Linux bonding driver provides the ability to group ports, detect link failures and reroute traffic to the surviving ports in a manner transparent to the storage participants.

Figure 10 Link aggregation 802.3ad (bonding), theory of operation

6806800H62B ATCA‐S201 Installation and Use Guide

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Emerson ATCA-S201 manual Link aggregation and bonding, Link aggregation 802.3ad bonding, theory of operation