+
+| Vpp forwards packets via L2 bridge domain with split-horizon groups set in circular topology
+| | [Documentation] | Create bridge domains (learning enabled) on two VPP nodes,
+| | ... | add interfaces to each bridge domain where both interfaces
+| | ... | toward TG are in the same split-horizon group and 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
+| | When 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} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_tg_if2}
+| | ... | ${bd_id1} | ${shg1}
+| | And Interface is added to bridge domain | ${dut1_node} | ${dut1_to_dut2}
+| | ... | ${bd_id1}
+| | 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} | ${shg2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_tg_if2}
+| | ... | ${bd_id2} | ${shg2}
+| | And Interface is added to bridge domain | ${dut2_node} | ${dut2_to_dut1}
+| | ... | ${bd_id2}
+| | 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_dut1_if1}
+| | | ... | ${tg_to_dut1_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 VM via two L2 bridge domains
+| | [Documentation] | Setup and run VM connected to VPP via Vhost-User
+| | ... | interfaces and check ICMPv4 packet forwarding through VM
+| | ... | via two L2 bridge domains with learning enabled.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | VPP_VM_ENV
+| | Given Path for 2-node testing is set
+| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And Interfaces in 2-node path are up
+| | When VPP Vhost interfaces for L2BD forwarding are setup | ${dut_node}
+| | ... | ${sock1}
+| | ... | ${sock2}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And VM for Vhost L2BD forwarding is setup | ${dut_node} | ${sock1}
+| | ... | ${sock2}
+| | Then Send and receive ICMPv4 bidirectionally | ${tg_node} | ${tg_to_dut_if1}
+| | ... | ${tg_to_dut_if2}
+| | [Teardown] | Run Keywords | Show Packet Trace on All DUTs | ${nodes}
+| | ... | AND | Stop and Clear QEMU | ${dut_node} | ${vm_node}
+
+| VPP forwards ICMPv6 packets through VM via two L2 bridge domains
+| | [Documentation] | Setup and run VM connected to VPP via Vhost-User
+| | ... | interfaces and check ICMPv6 packet forwarding through VM
+| | ... | via two L2 bridge domains with learning enabled.
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | VPP_VM_ENV
+| | Given Path for 2-node testing is set
+| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And Interfaces in 2-node path are up
+| | When VPP Vhost interfaces for L2BD forwarding are setup | ${dut_node}
+| | ... | ${sock1}
+| | ... | ${sock2}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And VM for Vhost L2BD forwarding is setup | ${dut_node} | ${sock1}
+| | ... | ${sock2}
+| | Then Send and receive ICMPv6 bidirectionally | ${tg_node} | ${tg_to_dut_if1}
+| | ... | ${tg_to_dut_if2}
+| | [Teardown] | Run Keywords | Show Packet Trace on All DUTs | ${nodes}
+| | ... | AND | Stop and Clear QEMU | ${dut_node} | ${vm_node}
+
+| VPP forwards ICMPv4 packets through VM via two L2 bridge domains with static L2FIB entries
+| | [Documentation] | Setup and run VM connected to VPP via Vhost-User
+| | ... | interfaces and check ICMPv4 packet forwarding through VM
+| | ... | via two L2 bridge domains with learning disabled
+| | ... | (static L2BFIB entries).
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | VPP_VM_ENV
+| | Given Path for 2-node testing is set
+| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And Interfaces in 2-node path are up
+| | When VPP Vhost interfaces for L2BD forwarding are setup | ${dut_node}
+| | ... | ${sock1}
+| | ... | ${sock2}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id1}
+| | ... | learn=${FALSE}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if1}
+| | ... | ${dut_node}
+| | ... | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if2}
+| | ... | ${dut_node}
+| | ... | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id2}
+| | ... | learn=${FALSE}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if2}
+| | ... | ${dut_node}
+| | ... | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if1}
+| | ... | ${dut_node}
+| | ... | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And VM for Vhost L2BD forwarding is setup | ${dut_node} | ${sock1}
+| | ... | ${sock2}
+| | Then Send and receive ICMPv4 bidirectionally | ${tg_node} | ${tg_to_dut_if1}
+| | ... | ${tg_to_dut_if2}
+| | [Teardown] | Run Keywords | Show Packet Trace on All DUTs | ${nodes}
+| | ... | AND | Stop and Clear QEMU | ${dut_node} | ${vm_node}
+
+| VPP forwards ICMPv6 packets through VM via two L2 bridge domains with static L2FIB entries
+| | [Documentation] | Setup and run VM connected to VPP via Vhost-User
+| | ... | interfaces and check ICMPv6 packet forwarding through VM
+| | ... | via two L2 bridge domains with learning disabled
+| | ... | (static L2BFIB entries).
+| | [Tags] | 3_NODE_DOUBLE_LINK_TOPO | VPP_VM_ENV
+| | Given Path for 2-node testing is set
+| | ... | ${nodes['TG']} | ${nodes['DUT1']} | ${nodes['TG']}
+| | And Interfaces in 2-node path are up
+| | When VPP Vhost interfaces for L2BD forwarding are setup | ${dut_node}
+| | ... | ${sock1}
+| | ... | ${sock2}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id1}
+| | ... | learn=${FALSE}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if1}
+| | ... | ${dut_node}
+| | ... | ${dut_to_tg_if1}
+| | ... | ${bd_id1}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if2}
+| | ... | ${dut_node}
+| | ... | ${vhost_if1}
+| | ... | ${bd_id1}
+| | And Bridge domain on DUT node is created | ${dut_node} | ${bd_id2}
+| | ... | learn=${FALSE}
+| | And Interface is added to bridge domain | ${dut_node} | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Interface is added to bridge domain | ${dut_node} | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if2}
+| | ... | ${dut_node}
+| | ... | ${dut_to_tg_if2}
+| | ... | ${bd_id2}
+| | And Destination port is added to L2FIB on DUT node | ${tg_node}
+| | ... | ${tg_to_dut_if1}
+| | ... | ${dut_node}
+| | ... | ${vhost_if2}
+| | ... | ${bd_id2}
+| | And VM for Vhost L2BD forwarding is setup | ${dut_node} | ${sock1}
+| | ... | ${sock2}
+| | Then Send and receive ICMPv6 bidirectionally | ${tg_node} | ${tg_to_dut_if1}
+| | ... | ${tg_to_dut_if2}
+| | [Teardown] | Run Keywords | Show Packet Trace on All DUTs | ${nodes}
+| | ... | AND | Stop and Clear QEMU | ${dut_node} | ${vm_node}