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-rw-r--r--tests/suites/vxlan/vxlan_bd_untagged.robot346
1 files changed, 332 insertions, 14 deletions
diff --git a/tests/suites/vxlan/vxlan_bd_untagged.robot b/tests/suites/vxlan/vxlan_bd_untagged.robot
index ecf2c55e33..5ce93e04b6 100644
--- a/tests/suites/vxlan/vxlan_bd_untagged.robot
+++ b/tests/suites/vxlan/vxlan_bd_untagged.robot
@@ -24,23 +24,341 @@
| Test Teardown | Show Packet Trace on All DUTs | ${nodes}
*** Variables ***
-| ${VNI}= | 23
-| ${BID}= | 23
+| ${vni_1}= | 23
+| ${vni_2}= | 35
+
+| ${bd_id1}= | 10
+| ${bd_id2}= | 20
+| ${bd_id3}= | 30
+| ${shg1}= | 1
+| ${shg2}= | 2
+
+| ${ip4_addr1}= | 172.16.0.1
+| ${ip4_addr2}= | 172.16.0.2
+| ${ip4_prefix}= | 24
+
+| ${ip6_addr1}= | 3ffe:64::1
+| ${ip6_addr2}= | 3ffe:64::2
+| ${ip6_prefix}= | 64
*** Test Cases ***
-| VPP can pass IPv4 bidirectionally through VXLAN
+| VPP can pass IPv4 bidirectionally through VXLAN using bridge domain
+| | [Documentation] | Create VXLAN interface on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on both VPP nodes, add
+| | ... | VXLAN interface and interface toward TG to bridge domains
+| | ... | and check traffic bidirectionally.
| | Given Path for 3-node testing is set
| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['DUT2']} | ${nodes['TG']}
-| | And Interfaces in 3-node path are up
-| | And IP addresses are set on interfaces | ${dut1_node} | ${dut1_to_dut2} | ${NONE}
-| | ... | ${dut2_node} | ${dut2_to_dut1} | ${NONE}
-| | ${dut1s_vxlan}= | When Create VXLAN interface | ${dut1_node} | ${VNI}
-| | | ... | ${dut1s_ip_address} | ${dut2s_ip_address}
-| | And Interfaces are added to BD | ${dut1_node} | ${BID}
-| | ... | ${dut1_to_tg} | ${dut1s_vxlan}
-| | ${dut2s_vxlan}= | And Create VXLAN interface | ${dut2_node} | ${VNI}
-| | | ... | ${dut2s_ip_address} | ${dut1s_ip_address}
-| | And Interfaces are added to BD | ${dut2_node} | ${BID}
-| | ... | ${dut2_to_tg} | ${dut2s_vxlan}
+| | And Interfaces in 3-node path are up
+| | And IP addresses are set on interfaces | ${dut1_node} | ${dut1_to_dut2} | ${NONE}
+| | ... | ${dut2_node} | ${dut2_to_dut1} | ${NONE}
+| | ${dut1s_vxlan}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${dut1s_ip_address} | ${dut2s_ip_address}
+| | And Interfaces are added to BD | ${dut1_node} | ${bd_id1}
+| | ... | ${dut1_to_tg} | ${dut1s_vxlan}
+| | ${dut2s_vxlan}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${dut2s_ip_address} | ${dut1s_ip_address}
+| | And Interfaces are added to BD | ${dut2_node} | ${bd_id1}
+| | ... | ${dut2_to_tg} | ${dut2s_vxlan}
| | Then Send and receive ICMPv4 bidirectionally
| | ... | ${tg_node} | ${tg_to_dut1} | ${tg_to_dut2}
+
+| Vpp forwards ICMPv4 packets through VXLAN tunnels in the same split-horizon group of one L2 bridge domain
+| | [Documentation] | Create two VXLAN interfaces on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on the first VPP node,
+| | ... | add VXLAN interfaces to the same split-horizon group of
+| | ... | the bridge domain where interfaces toward TG are added to.
+| | ... | Create two bridge domains (learning enabled) on the second
+| | ... | VPP node and add one VXLAN interface and one interface
+| | ... | toward TG to each of them. Check traffic bidirectionally.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO
+| | Given Path for 3-node BD-SHG testing is set | ${nodes['TG']}
+| | ... | ${nodes['DUT1']}
+| | ... | ${nodes['DUT2']}
+| | And Interfaces in 3-node BD-SHG testing are up
+| | And Set Interface Address | ${dut1_node} | ${dut1_to_dut2} | ${ip4_addr1}
+| | ... | ${ip4_prefix}
+| | And Set Interface Address | ${dut2_node} | ${dut2_to_dut1} | ${ip4_addr2}
+| | ... | ${ip4_prefix}
+| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${ip4_addr2}
+| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${ip4_addr1}
+| | ${dut1s_vxlan1}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${ip4_addr1} | ${ip4_addr2}
+| | ${dut1s_vxlan2}= | And Create VXLAN interface | ${dut1_node} | ${vni_2}
+| | | ... | ${ip4_addr1} | ${ip4_addr2}
+| | ${dut2s_vxlan1}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${ip4_addr2} | ${ip4_addr1}
+| | ${dut2s_vxlan2}= | And Create VXLAN interface | ${dut2_node} | ${vni_2}
+| | | ... | ${ip4_addr2} | ${ip4_addr1}
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan1} | up
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan2} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan1} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan2} | up
+| | And Vpp Node Interfaces Ready Wait | ${dut1_node}
+| | And Vpp Node Interfaces Ready Wait | ${dut2_node}
+| | And Bridge domain on DUT node is created | ${dut1_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if2}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan1}
+| | ... | ${bd_id1} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan2}
+| | ... | ${bd_id1} | ${shg1}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if1}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan1}
+| | ... | ${bd_id2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if2}
+| | ... | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan2}
+| | ... | ${bd_id3}
+| | Then Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if2}
+| | And Run Keyword And Expect Error | ICMP echo Rx timeout
+| | ... | Send and receive ICMPv4 bidirectionally
+| | | ... | ${tg_node} | ${tg_to_dut2_if1}
+| | | ... | ${tg_to_dut2_if2}
+
+| Vpp forwards ICMPv4 packets through VXLAN tunnels in different split-horizon groups of one L2 bridge domain
+| | [Documentation] | Create two VXLAN interfaces on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on the first VPP node,
+| | ... | add VXLAN interfaces to different split-horizon groups of
+| | ... | the bridge domain where interfaces toward TG are added to.
+| | ... | Create two bridge domains (learning enabled) on the second
+| | ... | VPP node and add one VXLAN interface and one interface
+| | ... | toward TG to each of them. Check traffic bidirectionally.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO
+| | Given Path for 3-node BD-SHG testing is set | ${nodes['TG']}
+| | ... | ${nodes['DUT1']}
+| | ... | ${nodes['DUT2']}
+| | And Interfaces in 3-node BD-SHG testing are up
+| | And Set Interface Address | ${dut1_node} | ${dut1_to_dut2} | ${ip4_addr1}
+| | ... | ${ip4_prefix}
+| | And Set Interface Address | ${dut2_node} | ${dut2_to_dut1} | ${ip4_addr2}
+| | ... | ${ip4_prefix}
+| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${ip4_addr2}
+| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${ip4_addr1}
+| | ${dut1s_vxlan1}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${ip4_addr1} | ${ip4_addr2}
+| | ${dut1s_vxlan2}= | And Create VXLAN interface | ${dut1_node} | ${vni_2}
+| | | ... | ${ip4_addr1} | ${ip4_addr2}
+| | ${dut2s_vxlan1}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${ip4_addr2} | ${ip4_addr1}
+| | ${dut2s_vxlan2}= | And Create VXLAN interface | ${dut2_node} | ${vni_2}
+| | | ... | ${ip4_addr2} | ${ip4_addr1}
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan1} | up
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan2} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan1} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan2} | up
+| | And Vpp Node Interfaces Ready Wait | ${dut1_node}
+| | And Vpp Node Interfaces Ready Wait | ${dut2_node}
+| | And Bridge domain on DUT node is created | ${dut1_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if2}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan1}
+| | ... | ${bd_id1} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan2}
+| | ... | ${bd_id1} | ${shg2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if1}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan1}
+| | ... | ${bd_id2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if2}
+| | ... | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan2}
+| | ... | ${bd_id3}
+| | Then Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv4 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut2_if1}
+| | ... | ${tg_to_dut2_if2}
+
+| VPP can pass IPv6 bidirectionally through VXLAN using bridge domain
+| | [Documentation] | Create VXLAN interface on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on both VPP nodes, add
+| | ... | VXLAN interface and interface toward TG to bridge domains
+| | ... | and check traffic bidirectionally.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO
+| | Given Path for 3-node testing is set
+| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['DUT2']} | ${nodes['TG']}
+| | And Interfaces in 3-node path are up
+| | And Set Interface Address | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr1}
+| | ... | ${ip6_prefix}
+| | And Set Interface Address | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr2}
+| | ... | ${ip6_prefix}
+| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr2}
+| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr1}
+| | ${dut1s_vxlan}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${ip6_addr1} | ${ip6_addr2}
+| | And Interfaces are added to BD | ${dut1_node} | ${bd_id1}
+| | ... | ${dut1_to_tg} | ${dut1s_vxlan}
+| | ${dut2s_vxlan}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${ip6_addr2} | ${ip6_addr1}
+| | And Interfaces are added to BD | ${dut2_node} | ${bd_id1}
+| | ... | ${dut2_to_tg} | ${dut2s_vxlan}
+| | Then Send and receive ICMPv6 bidirectionally
+| | ... | ${tg_node} | ${tg_to_dut1} | ${tg_to_dut2}
+
+| Vpp forwards ICMPv6 packets through VXLAN tunnels in the same split-horizon group of one L2 bridge domain
+| | [Documentation] | Create two VXLAN interfaces on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on the first VPP node,
+| | ... | add VXLAN interfaces to the same split-horizon group of
+| | ... | the bridge domain where interfaces toward TG are added to.
+| | ... | Create two bridge domains (learning enabled) on the second
+| | ... | VPP node and add one VXLAN interface and one interface
+| | ... | toward TG to each of them. Check traffic bidirectionally.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | EXPECTED_FAILING
+| | Given Path for 3-node BD-SHG testing is set | ${nodes['TG']}
+| | ... | ${nodes['DUT1']}
+| | ... | ${nodes['DUT2']}
+| | And Interfaces in 3-node BD-SHG testing are up
+| | And Set Interface Address | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr1}
+| | ... | ${ip6_prefix}
+| | And Set Interface Address | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr2}
+| | ... | ${ip6_prefix}
+| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr2}
+| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr1}
+| | ${dut1s_vxlan1}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${ip6_addr1} | ${ip6_addr2}
+| | ${dut1s_vxlan2}= | And Create VXLAN interface | ${dut1_node} | ${vni_2}
+| | | ... | ${ip6_addr1} | ${ip6_addr2}
+| | ${dut2s_vxlan1}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${ip6_addr2} | ${ip6_addr1}
+| | ${dut2s_vxlan2}= | And Create VXLAN interface | ${dut2_node} | ${vni_2}
+| | | ... | ${ip6_addr2} | ${ip6_addr1}
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan1} | up
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan2} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan1} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan2} | up
+| | And Vpp Node Interfaces Ready Wait | ${dut1_node}
+| | And Vpp Node Interfaces Ready Wait | ${dut2_node}
+| | And Bridge domain on DUT node is created | ${dut1_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if2}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan1}
+| | ... | ${bd_id1} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan2}
+| | ... | ${bd_id1} | ${shg1}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if1}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan1}
+| | ... | ${bd_id2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if2}
+| | ... | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan2}
+| | ... | ${bd_id3}
+| | Then Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if2}
+| | And Run Keyword And Expect Error | ICMP echo Rx timeout
+| | ... | Send and receive ICMPv6 bidirectionally
+| | | ... | ${tg_node} | ${tg_to_dut2_if1}
+| | | ... | ${tg_to_dut2_if2}
+
+| Vpp forwards ICMPv6 packets through VXLAN tunnels in different split-horizon groups of one L2 bridge domain
+| | [Documentation] | Create two VXLAN interfaces on both VPP nodes. Create one
+| | ... | bridge domain (learning enabled) on the first VPP node,
+| | ... | add VXLAN interfaces to different split-horizon groups of
+| | ... | the bridge domain where interfaces toward TG are added to.
+| | ... | Create two bridge domains (learning enabled) on the second
+| | ... | VPP node and add one VXLAN interface and one interface
+| | ... | toward TG to each of them. Check traffic bidirectionally.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | EXPECTED_FAILING
+| | Given Path for 3-node BD-SHG testing is set | ${nodes['TG']}
+| | ... | ${nodes['DUT1']}
+| | ... | ${nodes['DUT2']}
+| | And Interfaces in 3-node BD-SHG testing are up
+| | And Set Interface Address | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr1}
+| | ... | ${ip6_prefix}
+| | And Set Interface Address | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr2}
+| | ... | ${ip6_prefix}
+| | And VPP IP Probe | ${dut1_node} | ${dut1_to_dut2} | ${ip6_addr2}
+| | And VPP IP Probe | ${dut2_node} | ${dut2_to_dut1} | ${ip6_addr1}
+| | ${dut1s_vxlan1}= | When Create VXLAN interface | ${dut1_node} | ${vni_1}
+| | | ... | ${ip6_addr1} | ${ip6_addr2}
+| | ${dut1s_vxlan2}= | And Create VXLAN interface | ${dut1_node} | ${vni_2}
+| | | ... | ${ip6_addr1} | ${ip6_addr2}
+| | ${dut2s_vxlan1}= | And Create VXLAN interface | ${dut2_node} | ${vni_1}
+| | | ... | ${ip6_addr2} | ${ip6_addr1}
+| | ${dut2s_vxlan2}= | And Create VXLAN interface | ${dut2_node} | ${vni_2}
+| | | ... | ${ip6_addr2} | ${ip6_addr1}
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan1} | up
+| | And Set Interface State | ${dut1_node} | ${dut1s_vxlan2} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan1} | up
+| | And Set Interface State | ${dut2_node} | ${dut2s_vxlan2} | up
+| | And Vpp Node Interfaces Ready Wait | ${dut1_node}
+| | And Vpp Node Interfaces Ready Wait | ${dut2_node}
+| | And Bridge domain on DUT node is created | ${dut1_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if2}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan1}
+| | ... | ${bd_id1} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1s_vxlan2}
+| | ... | ${bd_id1} | ${shg2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if1}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan1}
+| | ... | ${bd_id2}
+| | And Bridge domain on DUT node is created | ${dut2_node} | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if2}
+| | ... | ${bd_id3}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2s_vxlan2}
+| | ... | ${bd_id3}
+| | Then Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if1}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if1}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut1_if2}
+| | ... | ${tg_to_dut2_if2}
+| | And Send and receive ICMPv6 bidirectionally | ${tg_node}
+| | ... | ${tg_to_dut2_if1}
+| | ... | ${tg_to_dut2_if2}