gistfile1.txt

$ sudo yum install kmod-openvswitch-1.7.2.17811-1.el6.x86_64.rpm openvswitch-1.7.2.17811-1.x86_64.rpm -y
Loaded plugins: security
Setting up Install Process
Examining kmod-openvswitch-1.7.2.17811-1.el6.x86_64.rpm: kmod-openvswitch-1.7.2.17811-1.el6.x86_64
Marking kmod-openvswitch-1.7.2.17811-1.el6.x86_64.rpm to be installed
Examining openvswitch-1.7.2.17811-1.x86_64.rpm: openvswitch-1.7.2.17811-1.x86_64
Marking openvswitch-1.7.2.17811-1.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package kmod-openvswitch.x86_64 0:1.7.2.17811-1.el6 will be installed
---> Package openvswitch.x86_64 0:1.7.2.17811-1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=======================================================================================================================================================================================================================================
 Package                                            Arch                                     Version                                                Repository                                                                    Size
=======================================================================================================================================================================================================================================
Installing:
 kmod-openvswitch                                   x86_64                                   1.7.2.17811-1.el6                                      /kmod-openvswitch-1.7.2.17811-1.el6.x86_64                                   6.7 M
 openvswitch                                        x86_64                                   1.7.2.17811-1                                          /openvswitch-1.7.2.17811-1.x86_64                                            6.1 M

Transaction Summary
=======================================================================================================================================================================================================================================
Install       2 Package(s)

Total size: 13 M
Installed size: 13 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : kmod-openvswitch-1.7.2.17811-1.el6.x86_64                                                                                                                                                                           1/2 
  Installing : openvswitch-1.7.2.17811-1.x86_64                                                                                                                                                                                    2/2 
  Verifying  : kmod-openvswitch-1.7.2.17811-1.el6.x86_64                                                                                                                                                                           1/2 
  Verifying  : openvswitch-1.7.2.17811-1.x86_64                                                                                                                                                                                    2/2 

Installed:
  kmod-openvswitch.x86_64 0:1.7.2.17811-1.el6                                                                            openvswitch.x86_64 0:1.7.2.17811-1                                                                           

Complete!

$ sudo /etc/init.d/openvswitch start
/usr/share/openvswitch/scripts/ovs-ctl: line 172: ulimit: core file size: cannot modify limit: Invalid argument
Inserting openvswitch module                               [  OK  ]
/etc/openvswitch/conf.db does not exist ... (warning).
Creating empty database /etc/openvswitch/conf.db           [  OK  ]
Starting ovsdb-server                                      [  OK  ]
Configuring Open vSwitch system IDs                        [  OK  ]
Starting ovs-vswitchd                                      [  OK  ]
iptables already has a rule for gre, not explicitly enabling.
iptables already has a rule for tcp to port 7471, not explicitly enabling.

$ uname -a
Linux ovs-build 2.6.32-279.19.1.el6.x86_64 #1 SMP Tue Dec 18 15:04:44 PST 2012 x86_64 x86_64 x86_64 GNU/Linux

$ sudo modprobe -a openvswitch
$ sudo lsmod |grep openvswitch
openvswitch           107380  0

$ dmesg |grep openvswitch
openvswitch module is older than RHEL 6.2 ... applying fixups
openvswitch: Open vSwitch switching datapath 1.7.2.17811, built Nov  9 2012 15:22:01