docs: add useful debug CLI

Change-Id: I5ef9ecd741f1623ae1b7a23fa0a4fa6db7e243a3
Signed-off-by: Scott Keeler <skeeler@cisco.com>

1 files changed, 69 insertions, 14 deletions

diff --git a/docs/reference/cmdreference/interface/hardware.rst b/docs/reference/cmdreference/interface/hardware.rst
index f4d334fd935..4ae8fd59559 100644
--- a/docs/reference/cmdreference/interface/hardware.rst
+++ b/docs/reference/cmdreference/interface/hardware.rst
@@ -1,32 +1,87 @@
-.. _hardwarecommands:
+.. _interface:
 
 .. toctree::
 
+Hardware-Interfaces Commands
+=============================
+This section contains those interface commands that are related to hardware-interfaces:
+
+
+* `Show Bridge-Domain`_
+* `Show Hardware-Interfaces`_
+* `Clear Hardware-Interfaces`_
+
+.. note:: For a complete list of CLI Debug commands refer to the Debug CLI section of the `Source Code Documents <https://docs.fd.io/vpp/18.07/clicmd.html>`_ .
+
+Show Bridge-Domain
++++++++++++++++++++
+
+Summary/Usage
+--------------
+
+show bridge-domain [*bridge-domain-id* [detail|int|arp| *bd-tag* ]]
+
+Description
+------------
+
+Show a summary of all the bridge-domain instances or detailed view of a single bridge-domain. Bridge-domains are created by adding an interface to a bridge using the **set interface l2 bridge** command.
+
+Example Usage
+--------------
+.. code-block:: console
+
+    Example of displaying all bridge-domains:
+
+    vpp# show bridge-domain
+
+     ID   Index   Learning   U-Forwrd   UU-Flood   Flooding   ARP-Term     BVI-Intf
+     0      0        off        off        off        off        off        local0
+    200     1        on         on         on         on         off          N/A
+
+    Example of displaying details of a single bridge-domains:
+
+    vpp# show bridge-domain 200 detail
+
+     ID   Index   Learning   U-Forwrd   UU-Flood   Flooding   ARP-Term     BVI-Intf
+    200     1        on         on         on         on         off          N/A
+
+             Interface           Index  SHG  BVI        VLAN-Tag-Rewrite
+     GigabitEthernet0/8/0.200      3     0    -               none
+     GigabitEthernet0/9/0.200      4     0    -               none
+
+Declaration and Implementation
+-------------------------------
+
+**Declaration:** bd_show_cli (src/vnet/l2/l2_bd.c line 1151)
+
+**Implementation:** bd_show
+
 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
+-  **brief**: Only show name, index and state (default for bonded
    interfaces).
--  verbose: Also display additional attributes (default for all other
+-  **verbose**: Also display additional attributes (default for all other
    interfaces).
--  detail: Also display all remaining attributes and extended
+-  **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.**
+.. note::
+	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
@@ -56,7 +111,7 @@ Example of how to display default data for all interfaces:
     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):
+Example of how to display *verbose* data for an interface by name and software index (where 2 is the software index):
 
 .. code-block:: console
 
@@ -76,10 +131,10 @@ Example of how to display '*verbose*' data for an interface by name and software
         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).
+(statistics associated with the **show hardware-interfaces** command).
 
 
 Summary/Usage
@@ -88,7 +143,7 @@ Summary/Usage
 .. code-block:: shell
 
     clear hardware-interfaces [<interface> [<interface> [..]]] [<sw_idx> [<sw_idx> [..]]].
-                
+
 
 Examples
 --------
@@ -100,7 +155,7 @@ Example of how to clear the extended statistics for all interfaces:
 
         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): 
+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