Adding Test cases to enable and disable DHCPv4 for eth1

    Changes: Added the tets cases:
    - Disable DHCP On Eth1 And Verify System Is Accessible By Eth0
    - Enable DHCP On Eth1 And Verify System Is Accessible By Eth0

    Tested: Ran and Tested on BMC Environment

Change-Id: I5035c1b4708d309be93a1b6ea0bd3560eee3370c
Signed-off-by: Sweta Potthuri <spotthur@in.ibm.com>
diff --git a/redfish/managers/test_multiple_interfaces_dhcp.robot b/redfish/managers/test_multiple_interfaces_dhcp.robot
new file mode 100644
index 0000000..49a886b
--- /dev/null
+++ b/redfish/managers/test_multiple_interfaces_dhcp.robot
@@ -0,0 +1,60 @@
+*** Settings ***
+Documentation   Test BMC DHCP multiple network interface functionalities.
+
+Resource        ../../lib/resource.robot
+Resource        ../../lib/common_utils.robot
+Resource        ../../lib/connection_client.robot
+Resource        ../../lib/bmc_network_utils.robot
+Resource        ../../lib/openbmc_ffdc.robot
+
+Suite Setup     Suite Setup Execution
+Test Teardown   FFDC On Test Case Fail
+Suite Teardown  Redfish.Logout
+
+*** Variables ***
+
+&{DHCP_ENABLED}           DHCPEnabled=${True}
+&{DHCP_DISABLED}          DHCPEnabled=${False}
+&{ENABLE_DHCP}            DHCPv4=${DHCP_ENABLED}
+&{DISABLE_DHCP}           DHCPv4=${DHCP_DISABLED}
+${ethernet_interface}     eth1
+
+*** Test Cases ***
+
+Disable DHCP On Eth1 And Verify System Is Accessible By Eth0
+    [Documentation]  Disable DHCP on eth1 using Redfish and verify if system is accessible by eth0.
+    [Tags]  Disable_DHCP_On_Eth1_And_Verify_System_Is_Accessible_By_Eth0
+    [Teardown]  Set DHCPEnabled To Enable Or Disable  True  eth1
+
+    Set DHCPEnabled To Enable Or Disable  False  eth1
+    Wait For Host To Ping  ${OPENBMC_HOST}  ${NETWORK_TIMEOUT}
+
+Enable DHCP On Eth1 And Verify System Is Accessible By Eth0
+    [Documentation]  Enable DHCP on eth1 using Redfish and verify if system is accessible by eth0.
+    [Tags]  Enable_DHCP_On_Eth1_And_Verify_System_Is_Accessible_By_Eth0
+    [Setup]  Set DHCPEnabled To Enable Or Disable  False  eth1
+
+    Set DHCPEnabled To Enable Or Disable  True  eth1
+    Wait For Host To Ping  ${OPENBMC_HOST}  ${NETWORK_TIMEOUT}
+
+*** Keywords ***
+
+Set DHCPEnabled To Enable Or Disable
+    [Documentation]  Enable or Disable DHCP on the interface.
+    [Arguments]  ${dhcp_enabled}=${False}  ${interface}=${ethernet_interface}  ${valid_status_code}=[${HTTP_OK},${HTTP_ACCEPTED}]
+
+    # Description of argument(s):
+    # dhcp_enabled        False for disabling DHCP and True for Enabling DHCP.
+    # interface           eth0 or eth1. Default is eth1.
+    # valid_status_code   Expected valid status code from Patch request. Default is HTTP_OK.
+
+    ${data}=  Set Variable If  ${dhcp_enabled} == ${False}  ${DISABLE_DHCP}  ${ENABLE_DHCP}
+    ${resp}=  Redfish.Patch
+    ...  /redfish/v1/Managers/bmc/EthernetInterfaces/${interface}
+    ...  body=${data}  valid_status_codes=${valid_status_code}
+
+Suite Setup Execution
+    [Documentation]  Do suite setup task.
+
+    Ping Host  ${OPENBMC_HOST}
+    Redfish.Login