Initial commit of Sphinx docs

Change-Id: I9fca8fb98502dffc2555f9de7f507b6f006e0e77
Signed-off-by: John DeNisco <jdenisco@cisco.com>

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+.. _hardwarecommands:
+
+.. toctree::
+
+Show Hardware-Interfaces
+========================
+Display more detailed information about all or a list of given
+interfaces. The verboseness of the output can be controlled by the
+following optional parameters:
+
+-  brief: Only show name, index and state (default for bonded
+   interfaces).
+-  verbose: Also display additional attributes (default for all other
+   interfaces).
+-  detail: Also display all remaining attributes and extended
+   statistics.
+
+**To limit the output of the command to bonded interfaces and their
+slave interfaces, use the '*bond*' optional parameter.**
+
+Summary/Usage
+-------------
+
+.. code-block:: shell
+
+    show hardware-interfaces [brief|verbose|detail] [bond] [<interface> [<interface> [..]]] [<sw_idx> [<sw_idx> [..]]].
+
+Examples
+--------
+Example of how to display default data for all interfaces:
+
+.. code-block:: console
+
+    vpp# show hardware-interfaces
+                  Name                Idx   Link  Hardware
+    GigabitEthernet7/0/0               1     up   GigabitEthernet7/0/0
+      Ethernet address ec:f4:bb:c0:bc:fc
+      Intel e1000
+        carrier up full duplex speed 1000 mtu 9216
+        rx queues 1, rx desc 1024, tx queues 3, tx desc 1024
+        cpu socket 0
+    GigabitEthernet7/0/1               2     up   GigabitEthernet7/0/1
+      Ethernet address ec:f4:bb:c0:bc:fd
+      Intel e1000
+        carrier up full duplex speed 1000 mtu 9216
+        rx queues 1, rx desc 1024, tx queues 3, tx desc 1024
+        cpu socket 0
+    VirtualEthernet0/0/0               3     up   VirtualEthernet0/0/0
+      Ethernet address 02:fe:a5:a9:8b:8e
+    VirtualEthernet0/0/1               4     up   VirtualEthernet0/0/1
+      Ethernet address 02:fe:c0:4e:3b:b0
+    VirtualEthernet0/0/2               5     up   VirtualEthernet0/0/2
+      Ethernet address 02:fe:1f:73:92:81
+    VirtualEthernet0/0/3               6     up   VirtualEthernet0/0/3
+      Ethernet address 02:fe:f2:25:c4:68
+    local0                             0    down  local0
+      local
+
+Example of how to display '*verbose*' data for an interface by name and software index (where 2 is the software index):
+
+.. code-block:: console
+
+    vpp# show hardware-interfaces GigabitEthernet7/0/0 2 verbose
+                   Name                Idx   Link  Hardware
+    GigabitEthernet7/0/0               1     up   GigabitEthernet7/0/0
+      Ethernet address ec:f4:bb:c0:bc:fc
+      Intel e1000
+        carrier up full duplex speed 1000 mtu 9216
+        rx queues 1, rx desc 1024, tx queues 3, tx desc 1024
+        cpu socket 0
+    GigabitEthernet7/0/1               2    down  GigabitEthernet7/0/1
+      Ethernet address ec:f4:bb:c0:bc:fd
+      Intel e1000
+        carrier up full duplex speed 1000 mtu 9216
+        rx queues 1, rx desc 1024, tx queues 3, tx desc 1024
+        cpu socket 0
+
+Clear Hardware-Interfaces
+=========================
+
+Clear the extended statistics for all or a list of given interfaces
+(statistics associated with the '*show hardware-interfaces*' command).
+
+
+Summary/Usage
+-------------
+
+.. code-block:: shell
+
+    clear hardware-interfaces [<interface> [<interface> [..]]] [<sw_idx> [<sw_idx> [..]]].
+                
+
+Examples
+--------
+
+Example of how to clear the extended statistics for all interfaces:
+
+
+.. code-block:: console
+
+        vpp# clear hardware-interfaces
+
+Example of how to clear the extended statistics for an interface by name and software index (where 2 is the software index): 
+
+.. code-block:: console
+
+        vpp# clear hardware-interfaces GigabitEthernet7/0/0 2
+
+