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Linux Fedora 17 network bond

Instruções para ativar a utilização de portas de rede (NIC-Network Interface Card) em conjunto.

No meu caso, a minha instalação do Fedora foi feita para utilizar a console. O conjunto de instruções a seguir desativam o NetworkManager e forçam a utilização do antigo e simples serviço de rede (network).


  1. Desativar o NetworkManager

    systemctl stop NetworkManager.service
    systemctl disable NetworkManager.service
  2. Criar o arquivo de configuração que carrega o módulo de agregamento de rede (bonding). Criar o arquivo /etc/modprobe.d/bonding.conf com o conteúdo abaixo. Esta configuração irá criar uma interface virtual chamada bonding0. Para criar mais de um conjunto separado de portas de rede agregadas, basta adicionar mais linhas apenas mudando o nome da interface virtual.

    alias bond0 bonding
  3. Criar o aqruivo de configuação da interface virtual de rede. Estas configurações devem ficar no arquivo /etc/sysconfig/network-scripts/ifcfg-bond0.

    DEVICE=bond0
    IPADDR=10.1.x.x
    NETWORK=10.1.0.0
    NETMASK=255.255.0.0
    USERCTL=no
    BOOTPROTO=none
    ONBOOT=yes
    BONDING_OPTS="mode=1 miimon=100"
    NM_CONTROLLED="no"
  4. Renomear o arquivo de configuração das portas de rede para arquivos no formato ifcfg-ethn. Por exemplo, no meu computador, eu mudei o nome do arquivo /etc/sysconfig/network-scripts/ifcfg-p2p1 para /etc/sysconfig/network-scripts/ifcfg-eth0. 
  5. Atualizar o conteúdo do arquivo de configuração da porta de rede. No meu exemplo, o arquivo em questão é o /etc/sysconfig/network-scripts/ifcfg-eth0. É importante que a variável DEVICE contenha o nome correto da interface de rede a ser utilizada.

    DEVICE=p2p1
    SLAVE=yes
    MASTER=bond0
    NM_CONTROLLED=no
    USERCTL=no
    BOOTPROTO=none
  6. Fazer o mesmo para todas as interfaces que irão compoor um conjunto agregado
  7. Habilitar e ativar o serviço de rede. É importante notar que cuidados devem ser tomados com o switch de rede utilizado para contornar possíveis problemas de protocolo, segurança, VLAN etc.

    systemctl enable network.service
    systemctl start network.service
  8. O resultado final deve ser algo parecido com

    # ifconfig -a

    bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>  mtu 1500
           inet 10.1.0.1  netmask 255.255.0.0  broadcast 10.1.255.255
            inet6 fe80::a00:27ff:feb3:6e6c  prefixlen 64  scopeid 0x20<link>
            ether 08:00:27:b3:6e:6c  txqueuelen 0  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 143  bytes 10860 (10.6 KiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    ...
    p2p1: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500
            ether 08:00:27:b3:6e:6c  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 143  bytes 10860 (10.6 KiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    p7p1: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 1500
            ether 08:00:27:b3:6e:6c  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 0  bytes 0 (0.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    ...
É muito importante notar que se não houver SLAVE na linha de definição da interface de rede, então a configuração está errada.

Visto que as interfaces de rede no meu computador receberam os nomes p2p1 e p7p1, os arquivos de configuração são:

/etc/sysconfig/network-scripts/ifcfg-eth0

NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="p2p1"
ONBOOT="yes"
USERCTL=no
SLAVE=yes
MASTER=bond0

/etc/sysconfig/network-scripts/ifcfg-eth1

NM_CONTROLLED="no"
BOOTPROTO="none"
DEVICE="p7p1"
ONBOOT="yes"
USERCTL=no
MASTER=bond0
SLAVE=yes

/etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0
IPADDR=10.1.0.1
NETWORK=10.1.0.0
NETMASK=255.255.0.0
USERCTL=no
BOOTPROTO=none
ONBOOT=yes
BONDING_OPTS="mode=1 miimon=100"

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