##Teaming##

  **Host System:**


    # virt-manager
  create 3 NIC using in H/W (eth0, eth1, eth2)


    # virsh start cetnos7 --console
  Login to guest os
  Username:
  Password:

    # yum install -y teamd

  change ifcfg files


	# cd /etc/sysconfig/network-scripts/
	# vi ifcfg-team0
```text
DEVICE=team0
DEVICETYPE=Team
ONBOOT=yes
BOOTPROTO=none
IPADDR=172.25.25.3
PREFIX=24
TEAM_CONFIG='{"runner": {"name": "activebackup"}, "link_watch": {"name": "ethtool"}}'
```
Teaming Modes:

 - activebackup
 - broadcast
 - roundrobin
 - loadbalance

This configuration is for master
Now we have to create slaves
and need to connect those slaves to master

    # ifconfig -a
to check number of availabe interfaces
<pre>

eth0: flags=4163 UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.122.72  netmask 255.255.255.0  broadcast 192.168.122.255
        inet6 fe80::5054:ff:fed3:a4da  prefixlen 64  scopeid 0x20<link>
        ether 52:54:00:d3:a4:da  txqueuelen 1000  (Ethernet)
        RX packets 336  bytes 31053 (30.3 KiB)
        RX errors 0  dropped 7  overruns 0  frame 0
        TX packets 176  bytes 17284 (16.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth1: flags=4098 BROADCAST,MULTICAST>  mtu 1500
        ether 52:54:00:6a:87:c5  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

eth2: flags=4098 BROADCAST,MULTICAST>  mtu 1500
        ether 52:54:00:44:7e:92  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

lo: flags=73 UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 6  bytes 416 (416.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 6  bytes 416 (416.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

</pre>

**Two slaves ports**

    # vi ifcfg-slave1


```text
DEVICE=eth1
HWADDR=52:54:00:6a:87:c5
DEVICETYPE=TeamPort
ONBOOT=yes
TEAM_MASTER=team0
```
DEVICE = one of the NIC
HWADDR= MAC addresss of the interface

    # vi ifcfg-slave2


```text
DEVICE=eth2
HWADDR=52:54:00:44:7e:92
DEVICETYPE=TeamPort
ONBOOT=yes
TEAM_MASTER=team0
```

    # ifup team0
    # ip link show

<pre>
1: lo: LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:d3:a4:da brd ff:ff:ff:ff:ff:ff
3: eth1: BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team0 state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:6a:87:c5 brd ff:ff:ff:ff:ff:ff
4: eth2: BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master team0 state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:6a:87:c5 brd ff:ff:ff:ff:ff:ff
5: team0: BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT qlen 1000
    link/ether 52:54:00:6a:87:c5 brd ff:ff:ff:ff:ff:ff

</pre>

    # ping 172.25.25.3


    # teamdctl team0 state

<pre>
setup:
  runner: activebackup
ports:
  eth2
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
  eth1
    link watches:
      link summary: up
      instance[link_watch_0]:
        name: ethtool
        link: up
        down count: 0
runner:
  active port: eth1

</pre>



**Problems I faced in teaming:**

 - I usually do teaming using nmcli but i was geting an Error ""NetworkManager plugin for 'team' unavailable". I googled about it and found it's a bug.