diff --git a/docs/source/advanced/networks/onie_switches/os_cumulus/upgrade.rst b/docs/source/advanced/networks/onie_switches/os_cumulus/upgrade.rst
index fdbae9844..dda586c88 100644
--- a/docs/source/advanced/networks/onie_switches/os_cumulus/upgrade.rst
+++ b/docs/source/advanced/networks/onie_switches/os_cumulus/upgrade.rst
@@ -6,23 +6,23 @@ The Cumulus OS on the ONIE switches can be upgraded using one of the following m
 Full Install
 ------------
 
-Perform a full install from the ``.bin`` file of the new Cumulus Linux OS version, using ONIE.  
+Perform a full install from the ``.bin`` file of the new Cumulus Linux OS version, using ONIE.
 
-.. important:: Make sure you back up all your data and configuration files as the binary install will erase all previous configuration. 
- 
-#. Place the binary image under ``/install`` on the xCAT MN node. 
+.. important:: Make sure you back up all your data and configuration files as the binary install will erase all previous configuration.
+
+#. Place the binary image under ``/install`` on the xCAT MN node.
 
    In this example, IP=172.21.253.37 is the IP on the Management Node. ::
 
       mkdir -p /install/onie/
       cp cumulus-linux-3.4.1.bin /install/onie/
-      
+
 #. Invoke the upgrade on the switches using :doc:`xdsh </guides/admin-guides/references/man1/xdsh.1>`: ::
-    
+
       xdsh switch1 "/usr/cumulus/bin/onie-install -a -f -i \
       http://172.21.253.37/install/onie/cumulus-linux-3.4.1.bin && reboot"
 
-   .. attention:: The full upgrade process may run 30 minutes or longer. 
+   .. attention:: The full upgrade process may run 30 minutes or longer.
 
 #. After upgrading, the license should be installed, see :ref:`Activate the License <activate-the-license>` for details.
 
@@ -33,35 +33,35 @@ Perform a full install from the ``.bin`` file of the new Cumulus Linux OS versio
 Update Changed Packages
 -----------------------
 
-This is the preferred method for upgrading the switch OS for incremental OS updates. 
+This is the preferred method for upgrading the switch OS for incremental OS updates.
 
 Create Local Mirror
 ```````````````````
 
-If the switches do not have access to the public Internet, you can create a local mirror of the Cumulus Linux repo. 
+If the switches do not have access to the public Internet, you can create a local mirror of the Cumulus Linux repo.
 
 #. Create a local mirror on the Management Node: ::
- 
+
     mkdir -p /install/mirror/cumulus
     cd /install/mirror/cumulus
-    wget -m --no-parent http://repo3.cumulusnetworks.com/repo/ 
-   
+    wget -m --no-parent http://repo3.cumulusnetworks.com/repo/
+
 #. Create a ``sources.list`` file to point to the local repo on the Management node.  In this example, IP=172.21.253.37 is the IP on the Management Node. ::
 
     # cat /tmp/sources.list
     deb     http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3 cumulus upstream
     deb-src http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3 cumulus upstream
-    
+
     deb     http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3-security-updates cumulus upstream
     deb-src http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3-security-updates cumulus upstream
-    
+
     deb     http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3-updates cumulus upstream
-    deb-src http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3-updates cumulus upstream   
+    deb-src http://172.21.253.37/install/mirror/cumulus/repo3.cumulusnetworks.com/repo CumulusLinux-3-updates cumulus upstream
 
 
 #. Distribute the ``sources.list`` file to your switches using :doc:`xdcp </guides/admin-guides/references/man1/xdcp.1>`. ::
 
-    xdcp switch1 /tmp/sources.list  /etc/apt/sources.list 
+    xdcp switch1 /tmp/sources.list  /etc/apt/sources.list
 
 Invoke the Update
 `````````````````
@@ -69,11 +69,11 @@ Invoke the Update
 #. Use xCAT :doc:`xdsh </guides/admin-guides/references/man1/xdsh.1>` to invoke the update: ::
 
     #
-    # A reboot may be needed after the upgrade 
-    # 
+    # A reboot may be needed after the upgrade
+    #
     xdsh switch1 'apt-get update && apt-get upgrade && reboot'
 
-#. Check in ``/etc/os-release`` file to verify that the OS has been upgraded.  
+#. Check in ``/etc/os-release`` file to verify that the OS has been upgraded.