Installing vWLC and Host Linux with SUSE Linux

This chapter contains the following topics:

Installing SUSE Linux

Download SLEs 12 - https://www.suse.com. (You must create a login)

  • eth0—for uplink (service-port of WLC); no IP address is required to this interface but should be connected and up.

  • eth1—for WLC Management interface; no IP address is required to this interface but should be connected and up.

  • eth2 or 3— for Linux accessibility; provide IP address to this interface, so that there is a network connectivity for Linux box and internet from it.


Note

Before working on any other package or KVM/vswitch, check the Linux kernel. Make sure the kernel version is 3.12.36-38 or above.

If the kernel version is not 3.12.36-38 or above, upgrade it by performing the following steps:

  1. Install SLES 12 on the server.

  2. Once the server comes up, copy the kernel rpm to the machine.

  3. On a terminal, execute rpm --ivh <kernel>.rpm.

    The rpm is installed and would take some time to configure. You need not do anything else.

  4. Reboot the machine once the installation is complete, and verify that the latest kernel is loaded using uname --a.

Install KVM and Supporting packages

Install KVM and supporting packages using the following commands: 

zipper install openvswitch openvswitch-switch
zypper install kvm libvirt libvirt-python qemu virt-manager

Enabing SSH

Execute the following commands: 

systemctl enable sshd.service → enabling sshd daemon
systemctl start sshd.service → starting ssh
netstat -an | grep :22 → to see if port# 22 is listening

Network Configuration

Creating a Bridge and Mapping it to Port (Ethernet Interface) 

ovs-vsctl add-br ov_10nw
ovs-vsctl add-port ov_10nw eth0
ovs-vsctl add-br ov_9nw
ovs-vsctl add-port ov_9nw eth1

The bridge name must be the same as created in the XML file.

Viewing the Bridge Mapping

ovs-vsctl show

Example 

linux-f8es:~ # ovs-vsctl show
51600b63-b508-45b0-9d0c-9f74036114c5
    Bridge "ov_9nw"
        Port "ov_9nw"
            Interface "ov_9nw"
                type: internal
        Port "eth1"
            Interface "eth1"
    Bridge "ov_10nw"
        Port "ov_10nw"
            Interface "ov_10nw"
                type: internal
        Port "eth0"
            Interface "eth0"
    ovs_version: "2.1.2"

Creating XML Files

Create two XML files; one for service-nw (10nw) and the other for management (9nw).

Example 

10nw_eth0_ov.xml
9nw_eth1_ov.xml

Both XML files contain VLAN information based on the network, or based on what you want to allow.

Example: To Allow All VLANs 

<network>
  <name>10-nw</name>
  <forward mode='bridge'/>
  <bridge name='ov_10nw'/>
  <virtualport type='openvswitch'/>
  <portgroup name='vlan-any' default='yes'>
  </portgroup>
</network>

The bridge name must be the same as created during "ovs-vsctl" command.

Starting Open vSwitch 

service openvswitch-switch start

Configuring Open vSwitch to Start When the System Boots 

chkconfig openvswitch-switch on

Note

vSwitch must be started before creating the bridge using above command.

Starting libvirt 

service libvirtd restart

Allowing CDP Packets to Forward from Open vSwitch 

ovs-vsctl set bridge ov_9nw other-config:forward-bpdu=true

Viewing the Virtual Network 

virsh net-list --all

Deleting the Default Network 

virsh net-undefine default

Creating Virtual Network 

virsh net-define <xml_file_name>

Viewing the Virtual Network 

virsh net-list --all

Starting the Virtual Network 

virsh net-start <network_name_that is in the list>

Example 

linux-f8es:~ # virsh net-list --all
 Name                 State      Autostart     Persistent
----------------------------------------------------------
 default              inactive   no            yes
linux-f8es:~ # virsh net-undefine default
Network default has been undefined
linux-f8es:~ # virsh net-define 10nw_eth0_ov.xml
Network 10-nw defined from 10nw_eth0_ov.xml
linux-f8es:~ # virsh net-define 9nw_eth1_ov.xml
Network 9-nw defined from 9nw_eth1_ov.xml
linux-f8es:~ # virsh net-list --all
 Name                 State      Autostart     Persistent
----------------------------------------------------------
 10-nw                inactive   no            yes
 9-nw                 inactive   no            yes
linux-f8es:~ # virsh net-start 10-nw
Network 10-nw started
linux-f8es:~ #
linux-f8es:~ # virsh net-start 9-nw
Network 9-nw started
linux-f8es:~ # virsh net-list --all
 Name                 State      Autostart     Persistent
----------------------------------------------------------
 10-nw                active     no            yes
 9-nw                 active     no            yes

Installing vWLC Using VMM

To install vWLC using VMM in SUSE Linux, perform the following steps:

Procedure

Step 1

Similar to Fedora, go to the terminal and type virt-manager.

The Virt Manager (VMM) pop-up appears.

Step 2

Follow the steps covered in Fedora installation using VMM.