[show] Enhance show interface status command output

doc/Command-Reference.md

@@ -1732,7 +1732,7 @@ This command displays information regarding port-channel interfaces
 
 **show interface status**
 
-This command displays some more fields such as Lanes, Speed, MTU, Type, Asymmetric PFC status and also the operational and administrative status of the interfaces
+This command displays some more fields such as Lanes, Speed, MTU, Type, Asymmetric PFC status, Neighbor device, Neighbor port and also the operational and administrative status of the interfaces
 
 - Usage:
   show interfaces status [INTERFACENAME]
@@ -1742,11 +1742,17 @@ This command displays some more fields such as Lanes, Speed, MTU, Type, Asymmetr
   show interface status of all interfaces
 
   admin@sonic:~$ show interfaces status
-  Interface            Lanes    Speed    MTU            Alias    Oper    Admin    Type    Asym PFC
-  -----------  ---------------  -------  -----  ---------------  ------  -------  ------  ----------
-  Ethernet0      49,50,51,52     100G   9100   hundredGigE1/1    down       up     N/A         off
-  Ethernet4      53,54,55,56     100G   9100   hundredGigE1/2    down       up     N/A         off
-  Ethernet8      57,58,59,60     100G   9100   hundredGigE1/3    down     down     N/A         off
+    Interface            Lanes    Speed    MTU           Alias           Vlan    Oper    Admin    Type    Asym PFC    Neighbour         Port
+-------------  ---------------  -------  -----  --------------  -------------  ------  -------  ------  ----------  -----------  -----------
+  Ethernet100  125,126,127,128      40G   9100  fortyGigE0/100         routed    down     down   QSFP+         off          N/A          N/A
+  Ethernet104      85,86,87,88      40G   9100  fortyGigE0/104         routed    down     down   QSFP+         off          N/A          N/A
+  Ethernet108      81,82,83,84      40G   9100  fortyGigE0/108         routed    down     down   QSFP+         off          N/A          N/A
+  Ethernet112      89,90,91,92      40G   9100  fortyGigE0/112  PortChannel01      up       up   QSFP+         off      Device1  Ethernet1/1
+  Ethernet116      93,94,95,96      40G   9100  fortyGigE0/116  PortChannel02    down     down   QSFP+         off      Device2  Ethernet1/1
+  Ethernet120     97,98,99,100      40G   9100  fortyGigE0/120  PortChannel03    down     down   QSFP+         off      Device3  Ethernet1/1
+  Ethernet124  101,102,103,104      40G   9100  fortyGigE0/124  PortChannel04      up       up   QSFP+         off      Device4  Ethernet1/1
+  PortChannel01            N/A      40G   9100             N/A         routed    down       up     N/A         N/A
+  PortChannel02            N/A      40G   9100             N/A         routed    down       up     N/A         N/A
   <contiues to display all the interfaces>
 
   ```

scripts/intfutil

@@ -267,9 +267,38 @@ def appl_db_portchannel_status_get(appl_db, config_db, po_name, status_type, por
         return "N/A"
     return status 
 
+def neighbour_port(config_db):
+    """
+    Get neighbour device and connected port info from REDIS ConfigDB
+    """
+    device_neighbour_dict = config_db.get_table('DEVICE_NEIGHBOR')
+    return device_neighbour_dict
+
+def connected_device_detail(device_neighbour_dict, local_interface):
+    """
+    Gets far end device of the given local interface
+    """
+    far_end_device = 'N/A'
+    try:
+        far_end_device = device_neighbour_dict[local_interface]['name']
+        return far_end_device
+    except:
+        return far_end_device
+
+def connected_interface_detail(device_neighbour_dict, local_interface):
+    """
+    Gets far end device's interface of the given local interface
+    """
+    far_end_port = 'N/A'
+    try:
+        far_end_port = device_neighbour_dict[local_interface]['port']
+        return far_end_port
+    except:
+        return far_end_port
+
 # ========================== interface-status logic ==========================
 
-header_stat = ['Interface', 'Lanes', 'Speed', 'MTU', 'Alias', 'Vlan', 'Oper', 'Admin', 'Type', 'Asym PFC']
+header_stat = ['Interface', 'Lanes', 'Speed', 'MTU', 'Alias', 'Vlan', 'Oper', 'Admin', 'Type', 'Asym PFC', 'Neighbour', 'Port']
 
 class IntfStatus(object):
 
@@ -298,7 +327,9 @@ class IntfStatus(object):
                               appl_db_port_status_get(self.appl_db, key, PORT_OPER_STATUS),
                               appl_db_port_status_get(self.appl_db, key, PORT_ADMIN_STATUS),
                               state_db_port_optics_get(self.state_db, key, PORT_OPTICS_TYPE),
-                              appl_db_port_status_get(self.appl_db, key, PORT_PFC_ASYM_STATUS)))
+                              appl_db_port_status_get(self.appl_db, key, PORT_PFC_ASYM_STATUS),
+                              connected_device_detail(self.neighbour_connected, key),
+                              connected_interface_detail(self.neighbour_connected, key)))
         # Sorting and tabulating the result table.
         for po, value in portchannel_speed_dict.iteritems():
             if po:
@@ -344,6 +375,7 @@ class IntfStatus(object):
         self.combined_int_to_vlan_po_dict = merge_dicts(self.int_to_vlan_dict, self.int_po_dict)
         self.portchannel_speed_dict = po_speed_dict(self.po_int_dict, self.appl_db)
         self.portchannel_keys = self.portchannel_speed_dict.keys()
+        self.neighbour_connected = neighbour_port(self.config_db)
         if appl_db_keys is None:
             return
         self.display_intf_status(appl_db_keys, self.front_panel_ports_list, self.portchannel_speed_dict)