8.2.14. Tap Interface

8.2.14.1. api-crud-tap-func

Tap Interface CRUD Tests

  • [Top] Network Topologies: TG=DUT1 2-node topology with two links between nodes.
  • [Enc] Packet Encapsulations: No packet sent.
  • [Cfg] DUT configuration: Add/Modify/Delete linux-TAP on DUT1.
  • [Ver] Verification: Check dump of tap interfaces for correctness.
  • [Ref] Applicable standard specifications:
Name VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: Tap Interface Modify And Delete 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 tap_connect tapname tap_int2 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_flags sw_if_index 6 admin-up 
 tap_modify sw_if_index 5 tapname tap_int1MOD 
 sw_interface_tap_dump 
 tap_delete sw_if_index 5 
 sw_interface_tap_dump 
 sw_interface_tap_dump 
 tap_delete sw_if_index 6 
 sw_interface_tap_dump 
  
 DUT2: 
 no VAT command executed

8.2.14.2. eth2p-eth-l2bdbasemaclrn-eth-2tap-func

Tap Interface Traffic Tests

  • [Top] Network Topologies: TG=DUT1 2-node topology with two links between nodes.
  • [Enc] Packet Encapsulations: Eth-IPv4-ICMPv4 for L2 switching of IPv4.
  • [Cfg] DUT configuration: DUT1 and DUT2 are configured with L2 bridge-domain (L2BD) MAC learning enabled; Split Horizon Groups (SHG) are set depending on test case; Namespaces (NM) are set on DUT1 with attached linux-TAP.
  • [Ver] TG verification: Test ICMPv4 Echo Request packets are sent by TG on link to DUT1; On receipt TG verifies packets for correctness and their IPv4 src-addr, dst-addr, and MAC addresses.
  • [Ref] Applicable standard specifications:
Name VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: Tap Interface Simple BD 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 tap_connect tapname tap_int2 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_flags sw_if_index 6 admin-up 
 bridge_domain_add_del bd_id 19 flood 1 uu-flood 1 forward 1 learn 1 arp-term 0 
 bridge_domain_add_del bd_id 20 flood 1 uu-flood 1 forward 1 learn 1 arp-term 0 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_l2_bridge sw_if_index 5 bd_id 20 shg 0 enable 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_l2_bridge sw_if_index 2 bd_id 20 shg 0 enable 
 sw_interface_set_flags sw_if_index 6 admin-up 
 sw_interface_set_l2_bridge sw_if_index 6 bd_id 19 shg 0 enable 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_l2_bridge sw_if_index 1 bd_id 19 shg 0 enable 
  
 DUT2: 
 no VAT command executed

8.2.14.3. eth2p-eth-l2bdbasemaclrn-l2shg-eth-2tap-func

Tap Interface Traffic Tests

  • [Top] Network Topologies: TG=DUT1 2-node topology with two links between nodes.
  • [Enc] Packet Encapsulations: Eth-IPv4-ICMPv4 for L2 switching of IPv4.
  • [Cfg] DUT configuration: DUT1 and DUT2 are configured with L2 bridge-domain (L2BD) MAC learning enabled; Split Horizon Groups (SHG) are set depending on test case; Namespaces (NM) are set on DUT1 with attached linux-TAP.
  • [Ver] TG verification: Test ICMPv4 Echo Request packets are sent by TG on link to DUT1; On receipt TG verifies packets for correctness and their IPv4 src-addr, dst-addr, and MAC addresses.
  • [Ref] Applicable standard specifications:
Name VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: Tap Interface BD - Different Split Horizon 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 tap_connect tapname tap_int2 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_flags sw_if_index 6 admin-up 
 bridge_domain_add_del bd_id 21 flood 1 uu-flood 1 forward 1 learn 1 arp-term 0 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_l2_bridge sw_if_index 2 bd_id 21 shg 0 enable 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_l2_bridge sw_if_index 5 bd_id 21 shg 2 enable 
 sw_interface_set_flags sw_if_index 6 admin-up 
 sw_interface_set_l2_bridge sw_if_index 6 bd_id 21 shg 3 enable 
  
 DUT2: 
 no VAT command executed
TC02: Tap Interface BD - Same Split Horizon 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 tap_connect tapname tap_int2 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_flags sw_if_index 6 admin-up 
 bridge_domain_add_del bd_id 21 flood 1 uu-flood 1 forward 1 learn 1 arp-term 0 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_l2_bridge sw_if_index 2 bd_id 21 shg 0 enable 
 sw_interface_set_flags sw_if_index 5 admin-up 
 sw_interface_set_l2_bridge sw_if_index 5 bd_id 21 shg 2 enable 
 sw_interface_set_flags sw_if_index 6 admin-up 
 sw_interface_set_l2_bridge sw_if_index 6 bd_id 21 shg 2 enable 
  
 DUT2: 
 no VAT command executed

8.2.14.4. eth2p-ethip4-ip4base-eth-1tap-func

Tap Interface Traffic Tests

  • [Top] Network Topologies: TG=DUT1 2-node topology with two links between nodes.
  • [Enc] Packet Encapsulations: Eth-IPv4-ICMPv4 for L2 switching of IPv4.
  • [Cfg] DUT configuration: DUT1 and DUT2 are configured with L2 bridge-domain (L2BD) MAC learning enabled; Split Horizon Groups (SHG) are set depending on test case; Namespaces (NM) are set on DUT1 with attached linux-TAP.
  • [Ver] TG verification: Test ICMPv4 Echo Request packets are sent by TG on link to DUT1; On receipt TG verifies packets for correctness and their IPv4 src-addr, dst-addr, and MAC addresses.
  • [Ref] Applicable standard specifications:
Name VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: Tap Interface IP Ping Without Namespace 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 sw_interface_add_del_address sw_if_index 5 16.0.10.1/24 
 sw_interface_add_del_address sw_if_index 2 192.168.0.1/24 
 sw_interface_set_flags sw_if_index 5 admin-up 
 ip_neighbor_add_del sw_if_index 2 dst 192.168.0.2 mac fa:16:3e:6b:a9:9f 
 ip_neighbor_add_del sw_if_index 5 dst 16.0.10.2 mac 02:00:00:00:00:02 
  
 DUT2: 
 no VAT command executed
TC02: Tap Interface IP Ping With Namespace 
 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 tap_connect tapname tap_int1 
 sw_interface_add_del_address sw_if_index 5 16.0.10.1/24 
 sw_interface_add_del_address sw_if_index 2 192.168.0.1/24 
 sw_interface_set_flags sw_if_index 5 admin-up 
 ip_neighbor_add_del sw_if_index 2 dst 192.168.0.2 mac fa:16:3e:6b:a9:9f 
 ip_neighbor_add_del sw_if_index 5 dst 16.0.10.2 mac 02:00:00:00:00:02 
  
 DUT2: 
 no VAT command executed