Emerson ATCA-S201 Manuale Utente

RTM-ATCA-SXXX Overview

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ATCA‐S201 Installation and Use Guide

4.8.1 Bonding, CLI command syntax

The Linux community has created an extensive man page for ifenslave. The subset

of essential elements is summarized below.

Create new bond

Step1: ifconfig eth0 down; ifconfig eth1 down

Deactivate the Ethernet “slave” ports that will become bond members

Step2: modprobe bonding mode=0 miimon=100

This loads the bonding module, sets the usage policy mode and sets polling
frequency to 100mS. Several mode exist, but these are the most common
Valid mode=[ ] options:.
mode=0 - Round robin packet, or balanced transmit policy. This mode will
only work with switches that support trunking.

mode=1- Active-backup; one slave port is active, the other is passive. This
mode should work with any Layer-II switch.

Step3:

ifconfig bond0 <ip-address> up

Define a new bond0, and assign a dotted decimal <ip-address >. Note: the

MAC address of the bond0 device will be taken from the first slave device.

Step4:

ifenslave bond0 eth0; ifenslave bond0 eth1

Assign the slave ports that will comprise the new bond.

Preserve new

bond attributes

/etc/rc.d/init.d/userstart

This file contains a template for adding commands that will be executed on
boot (or shutdown) as required by the user. This file is stored in system flash
memory and preserved over reboots. Edit this file and add the entire
sequence of bond commands.

Example:

ifconfig eth0 down; ifconfig eth1 down
modprobe bonding mode=0 miimon=100
ifconfig bond0 <ip-address> up
ifenslave bond0 eth0; ifenslave bond0 eth1 eth1

Remove bond

Step1:

ifenslave -d bond0 eth0; ifenslave -d bond0 eth1

Remove all Ethernet “slave” ports that are bond members

Step2:

ifconfig eth0 down; ifconfig eth1 down

Set the former slave ports as down.

Step3: /etc/rc.d/init.d/userstart

Remove the relevant bond creation code, and reboot