PHReeK.oRG » CentOS 7 Basic NIC Teaming

CentOS 7 Basic NIC Teaming← Back

11 Oct, 2014

I wanted to enable basic roundrobin NIC teaming on my HP MicroServer Gen8. This configuration allows load balancing and fault tolerance. When transferring data to the server it will only be received via 1 NIC meaning a 1Gbps limit per connection, but 2 connections can transfer at 1Gbps each. When receiving data it will load balance over both NICs meaning you can achieve up to 2Gbps on a single connection. A future article will describe how to enable 802.3ad LACP aggregation which will provide 2Gbps data transfers both ways. This post will also work on RHEL 7.

NB: While making these changes you will need to be logged into the server from either the console or ILO as the network connection WILL go down.

Disable NetworkManager

systemctl stop NetworkManager
systemctl disable NetworkManager
yum erase NetworkManager*

Take note of the names of your NICs and their MAC addresses
```
ip link
```
In my case they are called eno1 and eno2 so you will need to substitute your own values accordingly in the following steps.

Edit /etc/sysconfig/network-scripts/ifcfg-eno1

DEVICE=eno1
DEVICETYPE=TeamPort
NM_CONTROLLED=no
BOOTPROTO=none
NAME=eno1
ONBOOT=no
TEAM_MASTER=team0

Edit /etc/sysconfig/network-scripts/ifcfg-eno2

DEVICE=eno2
DEVICETYPE=TeamPort
NM_CONTROLLED=no
BOOTPROTO=none
NAME=eno2
ONBOOT=no
TEAM_MASTER=team0

Edit /etc/sysconfig/network-scripts/ifcfg-team0

DEVICE=team0
NAME=team0
DEVICETYPE=Team
IPADDR=10.1.1.5
NETMASK=255.255.255.0
GATEWAY=10.1.1.254
DNS1=10.1.1.1
DNS2=10.1.1.2
IPV6INIT=yes
ONBOOT=yes
USERCTL=no
BOOTPROTO=static
TEAM_CONFIG='{"runner":{"name":"roundrobin"}}'

Restart the network service
```
systemctl restart network
```

Check that the team0 interface is up

ip addr

1: lo:  mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eno1:  mtu 1500 qdisc mq master team0 state UP qlen 1000
    link/ether a0:1d:48:c7:12:64 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a21d:48ff:fec7:1264/64 scope link
       valid_lft forever preferred_lft forever
3: eno2:  mtu 1500 qdisc mq master team0 state UP qlen 1000
    link/ether a0:1d:48:c7:12:64 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a21d:48ff:fec7:1264/64 scope link
       valid_lft forever preferred_lft forever
4: team0:  mtu 1500 qdisc noqueue state UP
    link/ether a0:1d:48:c7:12:64 brd ff:ff:ff:ff:ff:ff
    inet 10.1.1.5/24 brd 10.1.1.255 scope global team0
       valid_lft forever preferred_lft forever
    inet6 fe80::a21d:48ff:fec7:1264/64 scope link
       valid_lft forever preferred_lft forever

centos, gen8, hp, microserver, network, nic, teaming

Comments

Ping

2015-10-13

Hi,

We have bonding options
BONDING_OPTS="primary=eth1 mode=active-backup primary_reselect=2"

whats the equivalent for primary_reselect in active/backup config teaming with json or nmcli

CentOS 7 Basic NIC Teaming← Back

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