+| Initialize L2 xconnect with Vhost-User and VLAN with DPDK link bonding in 3-node circular topology
+| | [Documentation]
+| | ... | Create two Vhost-User interfaces on all defined VPP nodes. Setup VLAN
+| | ... | on BondEthernet interfaces between DUTs. Cross connect one Vhost
+| | ... | interface with physical interface towards TG and other Vhost interface
+| | ... | with VLAN sub-interface. All interfaces are brought up.
+| | ...
+| | ... | *Arguments:*
+| | ... | - sock1 - Socket path for first Vhost-User interface. Type: string
+| | ... | - sock2 - Socket path for second Vhost-User interface. Type: string
+| | ... | - subid - ID of the sub-interface to be created. Type: string
+| | ... | - tag_rewrite - Method of tag rewrite. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize L2 xconnect with Vhost-User and VLAN with DPDK link\
+| | ... | bonding in 3-node circular topology \| /tmp/sock1 \| /tmp/sock2 \
+| | ... | \| 10 \| pop-1 \|
+| | ...
+| | [Arguments] | ${sock1} | ${sock2} | ${subid} | ${tag_rewrite}
+| | ...
+| | Set interfaces in path up
+| | Add DPDK bonded ethernet interfaces to topology file in 3-node single link topology
+| | Set Interface State | ${dut1} | ${dut1_eth_bond_if1} | up
+| | VPP Set interface MTU | ${dut1} | ${dut1_eth_bond_if1}
+| | Set Interface State | ${dut2} | ${dut2_eth_bond_if1} | up
+| | VPP Set interface MTU | ${dut2} | ${dut2_eth_bond_if1}
+| | Initialize VLAN dot1q sub-interfaces in 3-node circular topology
+| | ... | ${dut1} | ${dut1_eth_bond_if1} | ${dut2} | ${dut2_eth_bond_if1}
+| | ... | ${subid}
+| | Configure L2 tag rewrite method on interfaces
+| | ... | ${dut1} | ${subif_index_1} | ${dut2} | ${subif_index_2}
+| | ... | ${tag_rewrite}
+| | Configure vhost interfaces for L2BD forwarding | ${dut1}
+| | ... | ${sock1} | ${sock2}
+| | Configure L2XC | ${dut1} | ${dut1_if1} | ${vhost_if1}
+| | Configure L2XC | ${dut1} | ${subif_index_1} | ${vhost_if2}
+| | Configure vhost interfaces for L2BD forwarding | ${dut2}
+| | ... | ${sock1} | ${sock2}
+| | Configure L2XC | ${dut2} | ${subif_index_2} | ${vhost_if1}
+| | Configure L2XC | ${dut2} | ${dut2_if2} | ${vhost_if2}
+| | All VPP Interfaces Ready Wait | ${nodes}
+
+| Initialize L2 xconnect with Vhost-User and VLAN with VPP link bonding in 3-node circular topology
+| | [Documentation]
+| | ... | Create two Vhost-User interfaces on all defined VPP nodes. Create one
+| | ... | link bonding (BondEthernet) interface on both VPP nodes. Enslave one
+| | ... | physical interface towards next DUT by BondEthernet interface. Setup
+| | ... | VLAN on BondEthernet interfaces between DUTs. Cross connect one Vhost
+| | ... | interface with physical interface towards TG and other Vhost interface
+| | ... | with VLAN sub-interface. All interfaces are brought up.
+| | ...
+| | ... | *Arguments:*
+| | ... | - sock1 - Socket path for first Vhost-User interface. Type: string
+| | ... | - sock2 - Socket path for second Vhost-User interface. Type: string
+| | ... | - subid - ID of the sub-interface to be created. Type: string
+| | ... | - tag_rewrite - Method of tag rewrite. Type: string
+| | ... | - bond_mode - Link bonding mode. Type: string
+| | ... | - lb_mode - Load balance mode. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize L2 xconnect with Vhost-User and VLAN with VPP link\
+| | ... | bonding in 3-node circular topology \| /tmp/sock1 \| /tmp/sock2 \
+| | ... | \| 10 \| pop-1 \| \| xor \| l34 \|
+| | ...
+| | [Arguments] | ${sock1} | ${sock2} | ${subid} | ${tag_rewrite} | ${bond_mode}
+| | ... | ${lb_mode}
+| | ...
+| | Set interfaces in path up
+| | ${dut1_eth_bond_if1}= | VPP Create Bond Interface | ${dut1} | ${bond_mode}
+| | ... | ${lb_mode}
+| | Set Interface State | ${dut1} | ${dut1_eth_bond_if1} | up
+| | VPP Set interface MTU | ${dut1} | ${dut1_eth_bond_if1}
+| | VPP Enslave Physical Interface | ${dut1} | ${dut1_if2}
+| | ... | ${dut1_eth_bond_if1}
+| | ${dut2_eth_bond_if1}= | VPP Create Bond Interface | ${dut2} | ${bond_mode}
+| | ... | ${lb_mode}
+| | Set Interface State | ${dut2} | ${dut2_eth_bond_if1} | up
+| | VPP Set interface MTU | ${dut1} | ${dut1_eth_bond_if1}
+| | VPP Enslave Physical Interface | ${dut2} | ${dut2_if1}
+| | ... | ${dut2_eth_bond_if1}
+| | VPP Show Bond Data On All Nodes | ${nodes} | details=${TRUE}
+| | Initialize VLAN dot1q sub-interfaces in 3-node circular topology
+| | ... | ${dut1} | ${dut1_eth_bond_if1} | ${dut2} | ${dut2_eth_bond_if1}
+| | ... | ${subid}
+| | Configure L2 tag rewrite method on interfaces
+| | ... | ${dut1} | ${subif_index_1} | ${dut2} | ${subif_index_2}
+| | ... | ${tag_rewrite}
+| | Configure vhost interfaces for L2BD forwarding | ${dut1}
+| | ... | ${sock1} | ${sock2}
+| | Configure L2XC | ${dut1} | ${dut1_if1} | ${vhost_if1}
+| | Configure L2XC | ${dut1} | ${subif_index_1} | ${vhost_if2}
+| | Configure vhost interfaces for L2BD forwarding | ${dut2}
+| | ... | ${sock1} | ${sock2}
+| | Configure L2XC | ${dut2} | ${subif_index_2} | ${vhost_if1}
+| | Configure L2XC | ${dut2} | ${dut2_if2} | ${vhost_if2}
+
+| Initialize L2 bridge domain in 2-node circular topology
+| | [Documentation]
+| | ... | Setup L2 DB topology by adding two interfaces on DUT into BD
+| | ... | that is created automatically with index 1. Learning is enabled.
+| | ... | Interfaces are brought up.
+| | ...
+| | ... | *Arguments:*
+| | ... | - bd_id - Bridge domain ID. Type: integer
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize L2 bridge domain in 2-node circular topology \| 1 \|
+| | ...
+| | [Arguments] | ${bd_id}=${1}
+| | ...
+| | Set interfaces in path up
+| | Add interface to bridge domain | ${dut1} | ${dut1_if1} | ${bd_id}
+| | Add interface to bridge domain | ${dut1} | ${dut1_if2} | ${bd_id}
+