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authorTibor Frank <tifrank@cisco.com>2019-11-14 09:28:14 +0100
committerTibor Frank <tifrank@cisco.com>2020-01-09 09:26:44 +0100
commit164b36d2ef70d70bd2f6ff83b6a50b8b87ef2e13 (patch)
treef659bae86959a1a95ee3300ec7040c8ef8d15230 /resources/libraries
parent468680a7d534c1f25ad45b5bddc67c601246a909 (diff)
DMM: Remove
Change-Id: Ibbfbed79e473c804390802ae1ecd737b50c06aa3 Signed-off-by: Tibor Frank <tifrank@cisco.com>
Diffstat (limited to 'resources/libraries')
-rw-r--r--resources/libraries/python/DMM/DMMConstants.py32
-rw-r--r--resources/libraries/python/DMM/SetupDMMTest.py184
-rw-r--r--resources/libraries/python/DMM/SingleCliSer.py298
-rw-r--r--resources/libraries/python/DMM/__init__.py16
-rw-r--r--resources/libraries/robot/dmm/dmm_utils.robot65
5 files changed, 0 insertions, 595 deletions
diff --git a/resources/libraries/python/DMM/DMMConstants.py b/resources/libraries/python/DMM/DMMConstants.py
deleted file mode 100644
index c4899df84a..0000000000
--- a/resources/libraries/python/DMM/DMMConstants.py
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""This file defines the constants variables for the DMM test."""
-
-class DMMConstants:
- """Define the directory path for the DMM test."""
-
- # DMM testing directory location at topology nodes
- REMOTE_FW_DIR = '/tmp/DMM-testing'
-
- # Shell scripts location
- DMM_SCRIPTS = 'dmm/scripts/csit/'
-
- # Run scripts location
- DMM_RUN_SCRIPTS = 'dmm/scripts/csit/run'
-
- # Libraries location
- DMM_DEPLIBS = 'tests/dmm/dmm_deplibs'
-
- # Config files location for the DMM test
- DMM_TESTCONFIG = 'tests/dmm/dmm_testconfig'
diff --git a/resources/libraries/python/DMM/SetupDMMTest.py b/resources/libraries/python/DMM/SetupDMMTest.py
deleted file mode 100644
index d84cbd544f..0000000000
--- a/resources/libraries/python/DMM/SetupDMMTest.py
+++ /dev/null
@@ -1,184 +0,0 @@
-# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""This module exists to provide setup utilities for the framework on topology
-nodes. All tasks required to be run before the actual tests are started is
-supposed to end up here.
-"""
-
-from shlex import split
-from subprocess import Popen, PIPE
-from multiprocessing import Pool
-from tempfile import NamedTemporaryFile
-from os.path import basename
-
-from robot.api import logger
-from robot.libraries.BuiltIn import BuiltIn
-
-from resources.libraries.python.ssh import SSH
-from resources.libraries.python.DMM.DMMConstants import DMMConstants as con
-from resources.libraries.python.topology import NodeType, Topology
-from resources.libraries.python.TLDK.SetupTLDKTest import copy_tarball_to_node,\
- delete_local_tarball
-
-__all__ = ["SetupDMMTest"]
-
-
-def pack_framework_dir():
- """Pack the testing WS into temp file, return its name.
- :returns: file_name
- :rtype: str
- :raises RuntimeError: If pack the testing framework failed.
- """
- tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="DMM-testing-")
- file_name = tmpfile.name
- tmpfile.close()
-
- proc = Popen(
- split("tar --exclude-vcs --exclude=./tmp --exclude=dmm_depends.tar.gz"
- " -zcf {0} .".format(file_name)), stdout=PIPE, stderr=PIPE)
- (stdout, stderr) = proc.communicate()
-
- logger.debug(stdout)
- logger.debug(stderr)
-
- return_code = proc.wait()
- if return_code != 0:
- raise RuntimeError("Could not pack testing framework.")
-
- return file_name
-
-def extract_tarball_at_node(tarball, node):
- """Extract tarball at given node.
-
- Extracts tarball using tar on given node to specific CSIT location.
- Raise runtime errors when failed.
-
- :param tarball: Path to tarball to upload.
- :param node: Dictionary created from topology.
- :type tarball: str
- :type node: dict
- :return: nothing
- :raises RuntimeError: If extract tarball failed.
- """
- logger.console('Extracting tarball to {0} on {1}'.format(
- con.REMOTE_FW_DIR, node['host']))
- ssh = SSH()
- ssh.connect(node)
-
- cmd = 'sudo rm -rf {1}; mkdir {1} ; tar -zxf {0} -C {1}; ' \
- 'rm -f {0};'.format(tarball, con.REMOTE_FW_DIR)
- (ret_code, _, stderr) = ssh.exec_command(cmd, timeout=30)
- if ret_code != 0:
- logger.error('Unpack error: {0}'.format(stderr))
- raise RuntimeError('Failed to unpack {0} at node {1}'.format(
- tarball, node['host']))
-
-def install_dmm_test(node):
- """Prepare the DMM test envrionment.
- Raise errors when failed.
-
- :param node: Dictionary created from topology.
- :type node: dict
- :returns: nothing.
- :raises RuntimeError: If install dmm failed.
- """
-
- arch = Topology.get_node_arch(node)
- logger.console('Install DMM on {0} ({1})'.format(node['host'], arch))
-
- ssh = SSH()
- ssh.connect(node)
- (ret_code, _, stderr) = ssh.exec_command(
- 'cd {0}/{1} && ./install_prereq.sh {2} 2>&1 | tee '
- 'log_install_prereq.txt'
- .format(con.REMOTE_FW_DIR, con.DMM_SCRIPTS, arch), timeout=600)
-
- if ret_code != 0:
- logger.error('Install DMM error: {0}'.format(stderr))
- raise RuntimeError('Install prereq failed')
- else:
- logger.console('Install DMM on {0} success!'.format(node['host']))
-
-def setup_node(args):
- """Run all set-up methods for a node.
-
- This method is used as map_async parameter. It receives tuple with all
- parameters as passed to map_async function.
-
- :param args: All parameters needed to setup one node.
- :type args: tuple
- :returns: True - success, False - error
- :rtype: bool
- :raises RuntimeError: If node setup failed.
- """
- tarball, remote_tarball, node = args
-
- # if unset, arch defaults to x86_64
- Topology.get_node_arch(node)
-
- try:
- if node['type'] == NodeType.DUT:
- copy_tarball_to_node(tarball, node)
- extract_tarball_at_node(remote_tarball, node)
- install_dmm_test(node)
- except RuntimeError as exc:
- logger.error("Node setup failed, error:'{0}'".format(exc.message))
- return False
- else:
- logger.console('Setup of node {0} done'.format(node['host']))
- return True
-
-class SetupDMMTest:
- """Setup suite run on topology nodes.
-
- Many VAT/CLI based tests need the scripts at remote hosts before executing
- them. This class packs the whole testing directory and copies it over
- to all nodes in topology under /tmp/
- """
-
- @staticmethod
- def setup_dmm_test(nodes):
- """Pack the whole directory and extract in temp on each node."""
-
- tarball = pack_framework_dir()
- msg = 'Framework packed to {0}'.format(tarball)
- logger.console(msg)
- logger.trace(msg)
- remote_tarball = "/tmp/{0}".format(basename(tarball))
-
- # Turn off logging since we use multiprocessing.
- log_level = BuiltIn().set_log_level('NONE')
- params = ((tarball, remote_tarball, node) for node in nodes.values())
- pool = Pool(processes=len(nodes))
- result = pool.map_async(setup_node, params)
- pool.close()
- pool.join()
-
- # Turn on logging.
- BuiltIn().set_log_level(log_level)
-
- logger.info(
- 'Executed node setups in parallel, waiting for processes to end')
- result.wait()
-
- results = result.get()
- node_setup_success = all(results)
- logger.info('Results: {0}'.format(results))
-
- logger.trace('Test framework copied to all topology nodes')
- delete_local_tarball(tarball)
- if node_setup_success:
- logger.console('All nodes are ready')
- else:
- logger.console('Failed to setup dpdk on all the nodes')
diff --git a/resources/libraries/python/DMM/SingleCliSer.py b/resources/libraries/python/DMM/SingleCliSer.py
deleted file mode 100644
index aa77eaa445..0000000000
--- a/resources/libraries/python/DMM/SingleCliSer.py
+++ /dev/null
@@ -1,298 +0,0 @@
-# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-
-"""
-This module exists to provide single client-server test for DMM
-on topology nodes.
-"""
-import time
-import os
-import glob
-
-from resources.libraries.python.ssh import SSH
-from resources.libraries.python.ssh import exec_cmd, exec_cmd_no_error
-from resources.libraries.python.DMM.DMMConstants import DMMConstants as con
-from resources.libraries.python.topology import Topology
-
-class SingleCliSer:
- """Test DMM with single client-server topology."""
-
- @staticmethod
- def set_dmm_interface_address(dut_node, ifname, ip_addr, ip4_prefix):
- """
- Flush ip, set ip, set interface up.
-
- :param dut_node: Node to set the interface address on.
- :param ifname: Interface name.
- :param ip_addr: IP address to configure.
- :param ip4_prefix: Prefix length.
- :type dut_node: dict
- :type ifname: str
- :type ip_addr: str
- :type ip4_prefix: int
- """
- cmd = 'sudo ip -4 addr flush dev {}'.format(ifname)
- exec_cmd_no_error(dut_node, cmd)
- cmd = 'sudo ip addr add {}/{} dev {}'\
- .format(ip_addr, ip4_prefix, ifname)
- exec_cmd_no_error(dut_node, cmd)
- cmd = 'sudo ip link set {0} up'.format(ifname)
- exec_cmd_no_error(dut_node, cmd)
-
- @staticmethod
- def setup_dmm_dut(dut1_node, dut2_node, dut1_if_name, dut2_if_name,
- script_name, dut1_ip, dut2_ip, prefix_len):
- """
- Setup DMM on DUT nodes.
-
- :param dut1_node: Node to setup DMM on.
- :param dut2_node: Node to setup DMM on.
- :param dut1_if_name: DUT1 to DUT2 interface name.
- :param dut2_if_name: DUT2 to DUT1 interface name.
- :param script_name: Name of the script to run.
- :param dut1_ip: IP address to configure on DUT1.
- :param dut2_ip: IP address to configure on DUT2.
- :param prefix_len: Prefix length.
- :type dut1_node: dict
- :type dut2_node: dict
- :type dut1_if_name: str
- :type dut2_if_name: str
- :type script_name: str
- :type dut1_ip: str
- :type dut2_ip: str
- :type prefix_len: int
- """
- SingleCliSer.set_dmm_interface_address(dut1_node, dut1_if_name,
- dut1_ip, prefix_len)
- SingleCliSer.set_dmm_interface_address(dut2_node, dut2_if_name,
- dut2_ip, prefix_len)
- cmd = 'cd {0}/{1} && ./{2} setup 0 {3} {4} {5}'\
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name,
- dut1_if_name, dut1_ip, dut2_ip)
- exec_cmd(dut1_node, cmd)
-
- cmd = 'cd {0}/{1} && ./{2} setup 1 {3} {4} {5}'\
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name,
- dut2_if_name, dut1_ip, dut2_ip)
- exec_cmd(dut2_node, cmd)
-
- @staticmethod
- def execute_test(dut1_node, dut2_node, dut1_if_name, dut2_if_name,
- script_name, dut1_ip, dut2_ip):
- """
- Run the given test case.
-
- :param dut1_node: Node to run an app with DMM on.
- :param dut2_node: Node to run an app with DMM on.
- :param dut1_if_name: DUT1 to DUT2 interface name.
- :param dut2_if_name: DUT2 to DUT1 interface name.
- :param script_name: Name of the script to run.
- :param dut1_ip: DUT1 IP address.
- :param dut2_ip: DUT2 IP address.
- :type dut1_node: dict
- :type dut2_node: dict
- :type dut1_if_name: str
- :type dut2_if_name: str
- :type script_name: str
- :type dut1_ip: str
- :type dut2_ip: str
- """
- cmd = 'cd {0}/{1} && ./{2} run 0 {3} {4} {5} ' \
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name,
- dut1_if_name, dut1_ip, dut2_ip)
- cmd += '2>&1 | tee log_{0}.txt &'.format(script_name)
- exec_cmd(dut1_node, cmd)
- time.sleep(10)
-
- cmd = 'cd {0}/{1} && ./{2} run 1 {3} {4} {5} ' \
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name,
- dut2_if_name, dut1_ip, dut2_ip)
- cmd += '2>&1 | tee log_{0}.txt'.format(script_name)
- exec_cmd(dut2_node, cmd)
-
- @staticmethod
- def verify_test_result(dut1_node, dut2_node, script_name):
- """
- Verify the test and return result.
-
- :param dut1_node: Node to verify test result on.
- :param dut2_node: Node to verify test result on.
- :param script_name: Name of the script to run.
- :type dut1_node: dict
- :type dut2_node: dict
- :type script_name: str
- :returns: test result PASS/FAIL.
- :rtype: str
- """
- cmd = 'cd {0}/{1} && ./{2} verify 0' \
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name)
- (_, stdout_ser, _) = exec_cmd(dut1_node, cmd)
-
- cmd = 'cd {0}/{1} && ./{2} verify 1' \
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name)
- (_, stdout_cli, _) = exec_cmd(dut2_node, cmd)
-
- if stdout_ser.find('DMM_CSIT_TEST_PASSED') != -1 \
- and stdout_cli.find('DMM_CSIT_TEST_PASSED') != -1:
- return "PASS"
- else:
- return "FAIL"
-
- @staticmethod
- def print_dmm_log(dut1_node, dut2_node, script_name):
- """
- Print DMM logs.
-
- :param dut1_node: Node to print DMM logs of.
- :param dut2_node: Node to print DMM logs of.
- :param script_name: Name of the script to run.
- :type dut1_node: dict
- :type dut2_node: dict
- :type script_name: str
- """
- cmd = 'cd {0}/{1} && ./{2} log 0'\
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name)
- exec_cmd(dut1_node, cmd)
-
- cmd = 'cd {0}/{1} && ./{2} log 1'\
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name)
- exec_cmd(dut2_node, cmd)
- cmd = 'mv /var/log/nStack/running.log /var/log/nStack/{0}_ser.log'\
- .format(script_name)
- exec_cmd(dut1_node, cmd, sudo=True)
- cmd = 'mv /var/log/nStack/running.log /var/log/nStack/{0}_cli.log'\
- .format(script_name)
- exec_cmd(dut2_node, cmd, sudo=True)
-
- @staticmethod
- def cleanup_dmm_dut(dut1_node, dut2_node, script_name):
- """
- Cleanup DMM DUT node.
-
- :param dut1_node: DMM node to be cleaned up.
- :param dut2_node: DMM node to be cleaned up.
- :param script_name: Name of the script to run.
- :type dut1_node: dict
- :type dut2_node: dict
- :type script_name: str
- """
- cmd = 'cd {0}/{1} && ./{2} cleanup 0'\
- .format(con.REMOTE_FW_DIR, con.DMM_RUN_SCRIPTS, script_name)
- exec_cmd(dut1_node, cmd)
- exec_cmd(dut2_node, cmd)
- time.sleep(5)
-
- @staticmethod
- def run_dmm_func_test_cases(dut1_node, dut2_node, dut1_if_name,
- dut2_if_name, dut1_ip, dut2_ip, prefix_len):
- """
- Execute all the functional test cases and return result.
-
- :param dut1_node: Node to run an app with DMM on.
- :param dut2_node: Node to run an app with DMM on.
- :param dut1_if_name: DUT1 to DUT2 interface name.
- :param dut2_if_name: DUT2 to DUT1 interface name.
- :param dut1_ip: IP address to configure on DUT1.
- :param dut2_ip: IP address to configure on DUT2.
- :param prefix_len: Prefix length.
- :type dut1_node: dict
- :type dut2_node: dict
- :type dut1_if_name: str
- :type dut2_if_name: str
- :type dut1_ip: str
- :type dut2_ip: str
- :type prefix_len: int
- :returns: Total testcase count, Passed testcase count.
- :rtype: tuple(int, int)
- """
- passed = 0
- total = 0
- failed = 0
- path = '{0}/*'.format(con.DMM_RUN_SCRIPTS)
- files = [os.path.basename(x) for x in glob.glob(path)]
- print "list of files : {0}".format(files)
-
- for name in files:
- print("file name : {}").format(name)
- total += 1
- SingleCliSer.setup_dmm_dut(dut1_node, dut2_node, dut1_if_name,
- dut2_if_name, name, dut1_ip, dut2_ip,
- prefix_len)
- SingleCliSer.execute_test(dut1_node, dut2_node, dut1_if_name,
- dut2_if_name, name, dut1_ip, dut2_ip)
- result = SingleCliSer.verify_test_result(dut1_node, dut2_node,
- '{0}'.format(name))
- if result == "PASS":
- passed += 1
- elif result == "FAIL":
- failed += 1
-
- SingleCliSer.print_dmm_log(dut1_node, dut2_node, name)
- SingleCliSer.cleanup_dmm_dut(dut1_node, dut2_node, name)
- print("TOTAL :{} PASSED : {} FAILED: {}").format\
- (total, passed, failed)
-
- return total, passed
-
- @staticmethod
- def dmm_get_interface_name(dut_node, dut_interface):
- """
- Get the interface name.
-
- :param dut_node: Node to get the interface name on.
- :param dut_interface: Interface key.
- :type dut_node: dict
- :type dut_interface: str
- :returns: Interface name.
- :rtype: str
- """
- mac = Topology.get_interface_mac(dut_node, dut_interface)
- cmd = 'ifconfig -a | grep {0}'.format(mac)
- (stdout, _) = exec_cmd_no_error(dut_node, cmd)
- interface_name = stdout.split(' ', 1)[0]
- return interface_name
-
- @staticmethod
- def get_logs_from_node(dut_node):
- """
- Get logs from node to the test executor machine.
-
- :param dut_node: Node to artifact the logs of.
- :type dut_node: dict
- """
- ssh = SSH()
- ssh.connect(dut_node)
- ssh.scp(".", '/var/log/nStack/*.log',
- get=True, timeout=60, wildcard=True)
-
- (ret, _, _) = exec_cmd(dut_node, 'ls -l /var/log/app*.log')
- if ret == 0:
- ssh.scp(".", '/var/log/app*.log',
- get=True, timeout=60, wildcard=True)
-
- exec_cmd(dut_node, 'rm -rf /var/log/nStack/*.log', sudo=True)
- exec_cmd(dut_node, 'rm -rf /var/log/app*.log', sudo=True)
-
- @staticmethod
- def archive_dmm_logs(dut1_node, dut2_node):
- """
- Get logs from both DUT's to the test executor machine.
-
- :param dut1_node: DUT1 node.
- :param dut2_node: DUT2 node.
- :type dut1_node: dict
- :type dut2_node: dict
- """
- SingleCliSer.get_logs_from_node(dut1_node)
- SingleCliSer.get_logs_from_node(dut2_node)
diff --git a/resources/libraries/python/DMM/__init__.py b/resources/libraries/python/DMM/__init__.py
deleted file mode 100644
index d7abcb27b1..0000000000
--- a/resources/libraries/python/DMM/__init__.py
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-__init__ file for directory resources/libraries/python/DMM
-"""
diff --git a/resources/libraries/robot/dmm/dmm_utils.robot b/resources/libraries/robot/dmm/dmm_utils.robot
deleted file mode 100644
index 231c92a4f1..0000000000
--- a/resources/libraries/robot/dmm/dmm_utils.robot
+++ /dev/null
@@ -1,65 +0,0 @@
-# Copyright (c) 2018 Huawei Technologies Co.,Ltd.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-*** Settings ***
-| Library | resources.libraries.python.NodePath
-| Documentation | *Utilities for the path computing, pcap reading*
-| ...
-| ... | Utilities for the path computing, pcap file reading and also the port
-| ... | selection.
-
-*** Keywords ***
-| Path for 2-node testing is set
-| | [Documentation] | Compute the path for the 2 node testing.
-| | ...
-| | ... | *Arguments:*
-| | ... | - dut1_node - DUT1 node. Type: dictionary
-| | ... | - dut2_node - DUT2 node. Type: dictionary
-| | ...
-| | ... | *Return:*
-| | ... | - No value returned.
-| | ...
-| | ... | *Example:*
-| | ...
-| | ... | \| Path for 2-node testing is set \| ${nodes['DUT1']} \
-| | ... | \| ${nodes['DUT2'] \|
-| | ...
-| | [Arguments] | ${dut1_node} | ${dut2_node}
-| | Append Nodes | ${dut1_node} | ${dut2_node}
-| | Compute Path
-
-| Pick out the port used to execute test
-| | [Documentation] | Pick out the port used to execute the test.
-| | ...
-| | ... | *Arguments:*
-| | ... | - No arguments.
-| | ...
-| | ... | *Return:*
-| | ... | - No value returned.
-| | ...
-| | ... | *Example:*
-| | ...
-| | ... | \| Pick out the port used to execute test \|
-| | ...
-| | ${dut1_to_dut2_if} | ${dut1_node}= | Next Interface
-| | ${dut2_to_dut1_if} | ${dut2_node}= | Next Interface
-| | ${dut1_to_dut2_if_name}= | DMM Get Interface Name
-| | ... | ${dut1_node} | ${dut1_to_dut2_if}
-| | ${dut2_to_dut1_if_name}= | DMM Get Interface Name
-| | ... | ${dut2_node} | ${dut2_to_dut1_if}
-| | Set Suite Variable | ${dut1_node}
-| | Set Suite Variable | ${dut2_node}
-| | Set Suite Variable | ${dut1_to_dut2_if}
-| | Set Suite Variable | ${dut2_to_dut1_if}
-| | Set Suite Variable | ${dut1_to_dut2_if_name}
-| | Set Suite Variable | ${dut2_to_dut1_if_name}