Merge "Fix the reference link"
diff --git a/pronto_deployment_guide/enb_installation.rst b/pronto_deployment_guide/enb_installation.rst
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--- a/pronto_deployment_guide/enb_installation.rst
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@@ -5,3 +5,175 @@
================
eNB Installation
================
+
+This section describes how to install and configure the Sercomm eNB
+which is the default eNB device for Aether/Pronto project.
+
+Preliminaries
+=============
+In order to install and configure the Sercomm eNB, we should prepare following device:
+
+* Laptop or PC
+* USB-Ethernet adapter or Ethernet port on Laptop/PC
+* CAT5/6/7 cable
+* Sercomm eNB
+* 1G-10G converter
+
+Also, we should know the below information:
+
+* MME IP address (10.168.0.6 by default)
+* TAC
+* Cell ID
+
+How to access the Sercomm eNB admin UI?
+=======================================
+The default Sercomm eNB has default configuration values which are not working within the Aether/Pronto edge.
+In order to configure the Sercomm eNB, we need to access the Sercomm eNB admin web UI.
+We can initially access the UI through the LAN port on the Sercomm eNB device.
+
+.. image:: images/enb-ser-1.jpg
+ :width: 1008
+ :height: 756
+ :alt: Sercomm eNB Port Panel
+
+The above figure depicts the Sercomm eNB port panel which has two Ethernet ports, one power port, and one GPS port.
+We should make a physical link between the laptop/PC and LAN port on the Sercomm eNB.
+In the above figure, the yellow cable should be connected to the laptop/PC.
+Once the physical link is established,
+the Ethernet interface on the laptop/PC should have an IP address in 11.11.11.0/24 subnet.
+The Sercomm eNB will automatically assign the IP address to the Ethernet interface on the laptop/PC,
+since the eNB is working as a DHCP server.
+Of course, the interface should be set to DHCP, not static.
+
+.. note::
+
+ If the Sercomm eNB does not assign the IP address on the laptop/PC's Ethernet interface, please double-check the physical link.
+ Or, it is possible to assign the static IP address on the laptop/PC's Ethernet interface. Aforementioned before, the IP address should be in 11.11.11.0/24 subnet.
+
+After the Ethernet interface on the laptop/PC has the IP address in 11.11.11.0/24 subnet,
+we can access the Sercomm eNB.
+We can open the Web browser (e.g., Chrome, Firefox, etc.), and go to `https://11.11.11.188`. Then, we can see the below login page on the Web browser.
+
+.. image:: images/enb-ser-2.png
+ :alt: Sercomm eNB UI login pae
+
+With the below credentials, we can log in the UI:
+
+* ID: sc_femto
+* Password: scHt3pp (or sc_femto)
+
+After log-in, we can see the state page.
+
+.. image:: images/enb-ser-3.png
+ :alt: Sercomm eNB UI state page
+
+Network configuration
+=====================
+We should then configure the IP address on the WAN port which will be connected to the Tofino switch.
+The network configuration page shows up when we click `NetWork set` button on the top menu bar.
+
+.. image:: images/enb-ser-4.png
+ :alt: Sercomm eNB UI network configuration page
+
+In this page, we should change four values in the `IP Address section`.
+
+* Connected type: Static IP
+* IP Address: 192.168.251.5
+* Network mask: 255.255.255.0
+* Gateway address: 192.168.251.1
+
+The IP address in this menu is the IP address for the WAN port.
+The Gateway address is the TOST IP address.
+After pushing those values on the network configuration page, click the `Save` button at the bottom.
+
+.. note::
+ No need to touch any other parameters in this configuration page.
+
+LTE configuration
+=================
+Next, we should configure the LTE parameters.
+Click the `Manage` button on the top menu bar and then go to the `LTE Basic Setting` tab.
+
+.. image:: images/enb-ser-5.png
+ :alt: Sercomm eNB UI LTE configuration page
+
+In this page, we should change below parameters:
+
+* Carrier Number: 2
+* Carrier Aggregation: unchecked
+* BandWidth: 20
+* FrequencyBand: 48,48
+* EARFCN: 55440,55640
+* CellIdentity: assigned Cell ID
+* PCI: 100,101
+* TxPower: 20
+* Tunnel Type: IPv4
+* MME IP Address: 10.168.0.6
+* TAC: assigned TAC
+* PLMNID: 315010
+* Sync Source: FREE_RUNNING
+* Enable CWMP: unchecked
+
+Among those parameters, we should carefully set values to CellIdentity and TAC.
+Those parameters are the preliminaries which ONF OPs team will assign to each site.
+Likewise, after pushing those parameters, click the `Save` button at the bottom.
+
+Then, click `SAS Configuration` tab in the same page.
+
+.. image:: images/enb-ser-6.png
+ :alt: Sercomm eNB UI SAS configuration page
+
+In this page, we should change five values in the `Location Configuration` section as follows:
+
+* Location: Indoor
+* Location Source: Manual
+* Latitude: 0
+* Longitude: 0
+* Elevation: -18000
+
+Do not forget to click the save button at the bottom after pushing values.
+
+Last, click `FAPService` menu at the top menu bar and go to `FAPControl` tab.
+
+.. image:: images/enb-ser-7.png
+ :alt: Sercomm eNB UI FAP Control page
+
+In this page, we have to check a single radio box, `AdminState` in the `FAPService_FAPControl_LTE` section.
+Then, click the `Save` button at the bottom.
+
+This is the all steps to configure the Sercomm eNB.
+
+Connect the Sercomm eNB to the fabric switch
+============================================
+After the above configuration, we should power off the Sercomm eNB and connect the eNB WAN port to the fabric switch.
+The Sercomm eNB is actually has 1G WAN port, although the fabric switch has 40G interfaces.
+Therefore, we should use the 1G-10G converter in which the 1G port is connected with the Sercomm eNB
+whereas the 10G port is connected to 10G-40G breakout cable linked to the fabric switch.
+
+.. note::
+ Alternatively, we can use an any 1G/10G switch, if we do not have a 1G-10G converter.
+
+Then, power on the Sercomm eNB device and get rid of the LAN port cable.
+
+.. note::
+ Without the LAN port cable, we can access the Sercomm eNB admin UI through `https://192.168.251.5` URL, if the laptop/PC is connected with the same network via the fabric switch.
+ For our convenience, we can add some forwarding rules into the iptable in the management node to get the Sercomm eNB admin UI outside. It is optional.
+
+Troubleshooting
+===============
+
+Connectivity check
+^^^^^^^^^^^^^^^^^^
+In order to check the connectivity, we can use the Sercomm eNB admin UI.
+Open the web browser and go to `https://192.168.251.5` and log in.
+Then, click the `Manage` menu and go to the `IP Diagnose` tab.
+
+.. image:: images/enb-ser-8.png
+ :alt: Sercomm eNB UI IP Diagnose page
+
+In this page, check the ping menu and write down the IP address `192.168.251.1` in the white box.
+Then, click the `Run` button.
+
+After a few seconds, we can see the ping results.
+If there is no results, the connectivity between the eNB and the fabric switch has a problem.
+Otherwise, the fabric switch is not up and running correctly.
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