diff --git a/xCAT-test/autotest/testcase/ppping/cases0 b/xCAT-test/autotest/testcase/ppping/cases0
index b98e64c7d..b36f9f62f 100644
--- a/xCAT-test/autotest/testcase/ppping/cases0
+++ b/xCAT-test/autotest/testcase/ppping/cases0
@@ -1,36 +1,48 @@
 start:ppping_h
+description:get ppping help information
 cmd:ppping -h
 check:rc==0
 check:output=~Usage
 end
 
 start:ppping_v
+description:Display verbose output
 cmd:ppping -v
 check:rc==0
 check:output=~Version
 end
 
 start:ppping_node
+description:ppping node
+Attribute: $$CN-The operation object of ppping command
 cmd:ping -c 3 $$CN > /dev/null 2>&1;if [[ $? -eq 1 ]]; then output=`ppping $$CN`;if [[ $? -eq 1 ]]&&[[ $output =~ "noping" ]];then exit 0;else exit 1;fi;else output=`ppping $$CN`; if [[ $? -eq 0 ]]&&[[ $output =~ "pinged all nodes successfully" ]];then exit 0;else exit 1;fi;fi
 check:rc==0 
 end
 
 start:ppping_V_node
+description:Display verbose output of ppping node.
+Attribute: $$CN-The operation object of ppping command
 cmd:ping -c 3 $$CN > /dev/null 2>&1;if [[ $? -eq 1 ]]; then output=`ppping -V $$CN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]];then exit 0;else exit 1;fi;else output=`ppping -V $$CN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: $$CN: ping" ]];then exit 0;else exit 1;fi;fi
 check:rc==0
 end
 
 start:ppping_q_node
+description:Display minimum output of ppping node.
+Attribute: $$CN-The operation object of ppping command
 cmd:ping -c 3 $$CN > /dev/null 2>&1;if [[ $? -eq 1 ]]; then output=`ppping -q $$CN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]];then exit 0;else exit 1;fi;else output=`ppping -q $$CN`; if [[ $? -eq 0 ]]&&[[ $output =~ "" ]];then exit 0;else exit 1;fi;fi
 check:rc==0
 end
 
 start:ppping_d_node
+description:Print debug information of ppping node.
+Attribute: $$CN-The operation object of ppping command
 cmd:ping -c 3 $$CN > /dev/null 2>&1;if [[ $? -eq 1 ]]; then output=`ppping -d $$CN`;if [[ $? -eq 1 ]]&&[[ $output =~ "start" ]]&&[[ $output =~ "stop" ]];then exit 0;else exit 1;fi;else output=`ppping -d $$CN`; if [[ $? -eq 0 ]]&&[[ $output =~ "start" ]]&&[[ $output =~ "stop" ]];then exit 0;else exit 1;fi;fi
 check:rc==0
 end
 
 start:ppping_i_node
+description:A comma separated list of network interface names that should be pinged instead of the interface represented by the nodename/hostname
+Attribute: $$CN-The operation object of ppping command
 cmd:cp /etc/hosts  /etc/hosts.bak
 check:rc==0
 cmd:a=`cat /etc/hosts |grep ' $$CN.'|awk '{print $1}'`;b=`cat /etc/resolv.conf |grep search|awk '{print $2}'`;echo "$a $$CN-eth0.$b $$CN-eth0" >> /etc/hosts
@@ -46,34 +58,26 @@ check:rc==0
 end
 
 start:ppping_nodes
-cmd:rc1=`ping -c 3 $$CN > /dev/null 2>&1`;rc2=`ping -c 3 $$SN > /dev/null 2>&1`;if [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 1 ]];then output=`ppping  $$CN,$$SN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 0 ]]&&[[ $rc2 -eq 1 ]]; then output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: noping" ]]&&[[ "$$CN: $$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 0 ]]; then output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ "$$SN: $$CN: noping" ]];then exit 0;else exit 1;fi;else output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: pinged all nodes successfully" ]]&&[[ "$$SN: pinged all nodes successfully" ]];then exit 0;else exit 1;fi;fi
-
+description:test the connectivity between nodes in the noderange using ping
+Attribute: $$CN,$$SN-The operation object of ppping command
+cmd:ping -c 3 $$CN > /dev/null 2>&1;rc1=$?;ping -c 3 $$SN > /dev/null 2>&1;rc2=$?;if [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 1 ]];then output=`ppping  $$CN,$$SN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 0 ]]&&[[ $rc2 -eq 1 ]]; then output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: noping" ]]&&[[ "$$CN: $$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 0 ]]; then output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ "$$SN: $$CN: noping" ]];then exit 0;else  exit 1;fi;else output=`ppping $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: pinged all nodes successfully" ]]&&[[ "$$SN: pinged all nodes successfully" ]];then exit 0;else  exit 1;fi;fi
 check:rc==0
 end
 
 start:ppping_V_nodes
-cmd:ping -c 3 $$CN > /dev/null 2>&1
+description:test the connectivity between nodes in the noderange using ping and print verbose output.
+Attribute: $$CN,$$SN-The operation object of ppping command
+cmd:ping -c 3 $$CN > /dev/null 2>&1;rc1=$?;ping -c 3 $$SN > /dev/null 2>&1;rc2=$?;if [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 1 ]];then output=`ppping -V $$CN,$$SN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 0 ]]&&[[ $rc2 -eq 1 ]]; then output=`ppping -V $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: noping" ]]&&[[ $output =~  "$$CN: $$SN: noping" ]]&&[[ $output =~ "$$CN: $$CN: ping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 0 ]]; then output=`ppping -V $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: $$CN: noping" ]];then exit 0;else  exit 1;fi;else output=`ppping -V $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: $$CN: ping" ]]&&[[ $output =~ "$$SN: $$SN: ping" ]]&&[[ $output =~ "$$CN: $$SN: ping" ]]&&[[ $output =~ "$$CN: $$CN: ping" ]];then exit 0;else  exit 1;fi;fi
 check:rc==0
-cmd:ping -c 3 $$SN > /dev/null 2>&1
-check:rc==0
-cmd:ppping -V $$SN,$$CN
-check:rc==0
-check:output=~$$CN: $$CN: ping
-check:output=~$$CN: $$SN: ping
-check:output=~$$SN: $$SN: ping
-check:output=~$$SN: $$CN: ping
 end
 
 
 
 start:ppping_V_s_nodes
-cmd:ping -c 3 $$CN > /dev/null 2>&1
+description:test the connectivity between nodes in the noderange using ping and print Ping serially instead of in parallel information.
+Attribute: $$CN,$$SN-The operation object of ppping command
+cmd:ping -c 3 $$CN > /dev/null 2>&1;rc1=$?;ping -c 3 $$SN > /dev/null 2>&1;rc2=$?;if [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 1 ]];then output=`ppping -V -s $$CN,$$SN`;if [[ $? -eq 1 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: noping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 0 ]]&&[[ $rc2 -eq 1 ]]; then output=`ppping -V -s $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: noping" ]]&&[[ $output =~  "$$CN: $$SN: noping" ]]&&[[ $output =~ "$$CN: $$CN: ping" ]];then exit 0;else exit 1;fi;elif [[ $rc1 -eq 1 ]]&&[[ $rc2 -eq 0 ]]; then output=`ppping -V -s $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$CN: noping" ]]&&[[ $output =~ "$$SN: $$CN: noping" ]];then exit 0;else  exit 1;fi;else output=`ppping -V -s $$CN,$$SN`; if [[ $? -eq 0 ]]&&[[ $output =~ "$$SN: $$CN: ping" ]]&&[[ $output =~ "$$SN: $$SN: ping" ]]&&[[ $output =~ "$$CN: $$SN: ping" ]]&&[[ $output =~ "$$CN: $$CN: ping" ]];then exit 0;else  exit 1;fi;fi
 check:rc==0
-cmd:ping -c 3 $$SN > /dev/null 2>&1
-check:rc==0
-cmd:ppping -V -s $$SN,$$CN
-check:rc==0
-check:output=~$$SN: $$SN: ping*\n$$SN: $$CN: ping*\n$$CN: $$SN: ping*\n$$CN: $$CN: ping
 end