Bonded Interfaces With Optional VLAN

From openSUSE

SuSE10.3

This seems to have been broken in 10.3, as the /etc/sysconfig/network/scripts/functions script fails with an error; I am working on it. speculatrix

Technical notes on Ethernet bonding

1. the ifcfg-eth-XX files will have different names according to the mac addresses of the machine.
2. create additional ifcfg-bondN.M to create vlan M on interface bondN, the provided startup script handles things automagically.
3. use "lspci" to find out the bonded slave; you could use eth0 or eth1 as the slave names but these might change if you change kernel.

Configuration examples

Bond interfaces without being an 802.1q trunk

Here's some typical example config files from /etc/sysconfig/network:

ifcfg-bond0

change the bonding slave line according to the result from "lspci".

BOOTPROTO="static"
STARTMODE="onboot"
USERCTL=no
IPADDR=10.0.0.221
NETMASK=255.255.255.0
NETWORK=10.0.0.0
BROADCAST=10.0.0.255
BONDING_MASTER="yes"
BONDING_MODULE_OPTS="mode=active-backup miimon=100" BONDING_SLAVE1=bus-pci-0000:04:00.0 BONDING_SLAVE2=bus-pci-0000:05:00.0
POST_UP_SCRIPT=vlans

ifcfg-eth-id-00:11:22:33:44:55

You don't really need config files for the individual ethernets - the pci identifiers in the main bond0 script do everything.

BOOTPROTO='static'
STARTMODE='onboot'
ETHTOOL_OPTIONS=''
USERCONTROL='no'
MASTER=bond0
SLAVE=yes

ifcfg-eth-id-11:22:33:44:55:66

BOOTPROTO='static'
STARTMODE='onboot'
ETHTOOL_OPTIONS=''
USERCONTROL='no'
MASTER=bond0
SLAVE=yes

Bond interfaces to make an 802.1q trunk with a vlan2 interface

ifcfg-bond0

BOOTPROTO="static"
STARTMODE="onboot"
USERCTL=no
BONDING_MASTER="yes"
BONDING_MODULE_OPTS="mode=active-backup miimon=100" BONDING_SLAVE1=bus-pci-0000:04:00.0 BONDING_SLAVE2=bus-pci-0000:05:00.0
POST_UP_SCRIPT=vlans

ifcfg-bond0.2

BOOTPROTO="static"
STARTMODE="onboot"
USERCTL=no
IPADDR=10.0.0.221
NETMASK=255.255.255.0
NETWORK=10.0.0.0
BROADCAST=10.0.0.255
MTU=''
REMOTE_IPADDR=''
USERCONTROL='no'

ifcfg-eth-id-00:11:22:33:44:55

You don't really need config files for the individual ethernets - the pci identifiers in the main bond0 script do everything.

BOOTPROTO='static'
STARTMODE='onboot'
ETHTOOL_OPTIONS=''
USERCONTROL='no'
MASTER=bond0
SLAVE=yes
POST_UP_SCRIPT=vlans

ifcfg-eth-id-11:22:33:44:55:66

BOOTPROTO='static'
STARTMODE='onboot'
ETHTOOL_OPTIONS=''
USERCONTROL='no'
MASTER=bond0
SLAVE=yes

Startup script

create a script to automagically create the vlans when bond0 comes up called _/etc/sysconfig/network/scripts/vlans_:

#!/bin/bash
# this script published under the GPL

ls /etc/sysconfig/network/ifcfg-bond*.* | awk -F- '{print $2}' | \
(
        while read IFACE
        do
                echo "Found config for vlan interface $IFACE"
                PARENT=`echo $IFACE | awk -F. '{print $1}'`
                VLAN=`echo $IFACE | awk -F. '{print $2}'`
                echo "vconfig add $PARENT $VLAN"
                vconfig add $PARENT $VLAN
        done
)

Hope this proves useful, I spent a while finding out how to make it all happen automagically. I am now trying to find out why this doesn't work for 10.3. speculatrix (Paul)