diff --git a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
index 1aca1ad..116c84f 100644
--- a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
+++ b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
@@ -115,8 +115,11 @@
     ${SNMP_MGR1_IP}     ${out_of_range_port}     ${invalid_port_error}
     ${SNMP_MGR1_IP}     ${alpha_port}            ${invalid_port_error}
     ${SNMP_MGR1_IP}     ${negative_port}         ${invalid_port_error}
+    ${SNMP_MGR1_IP}     ${alphanumeric_port}     ${invalid_port_error}
     ${out_of_range_ip}  ${NON_DEFAULT_PORT1}     ${invalid_destination_error}
     ${alpha_ip}         ${NON_DEFAULT_PORT1}     ${invalid_destination_error}
+    ${negative_ip}      ${NON_DEFAULT_PORT1}     ${invalid_destination_error}
+    ${empty_ip}         ${NON_DEFAULT_PORT1}     ${invalid_destination_error}
 
 
 Configure Multiple SNMP Managers On BMC Via GUI And Verify
diff --git a/lib/snmp/resource.robot b/lib/snmp/resource.robot
index d2493b5..eadf82f 100644
--- a/lib/snmp/resource.robot
+++ b/lib/snmp/resource.robot
@@ -11,6 +11,8 @@
 ${out_of_range_ip}    10.6.6.256
 ${alpha_ip}           xx.xx.xx.xx
 ${less_octet_ip}      10.5.5
+${negative_ip}        -10.6.6.6
+${empty_ip}           ${EMPTY}
 
 # Valid and invalid IP and ports. Valid port range is 0-65535.
 # Default port is 162.
@@ -22,6 +24,7 @@
 ${alpha_port}         ab
 ${negative_port}      ${-12}
 ${empty_port}         ${EMPTY}
+${alphanumeric_port}  abc123
 
 # User Name Password
 ${SNMP_MGR1_USERNAME}    ${EMPTY}