8.2.6. IPv4 Routed-Forwarding¶

8.2.6.1. eth2p-ethip4-ip4base-func¶

IPv4 routing test cases RFC791 IPv4, RFC826 ARP, RFC792 ICMPv4. Encapsulations: Eth-IPv4-ICMPv4 on links TG-DUT1, TG-DUT2, DUT1-DUT2. IPv4 routing tests use circular 3-node topology TG - DUT1 - DUT2 - TG with one link between the nodes. DUT1 and DUT2 are configured with IPv4 routing and static routes. Test ICMPv4 Echo Request packets are sent in both directions by TG on links to DUT1 and DUT2 and received on TG links on the other side of circular topology. On receive TG verifies packets IPv4 src-addr, dst-addr and MAC addresses.

Name	VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: DUT replies to ICMPv4 Echo Req to its ingress interface	DUT1: no VAT command executed DUT2: no VAT command executed
TC02: DUT routes IPv4 to its egress interface	DUT1: no VAT command executed DUT2: no VAT command executed
TC03: DUT1 routes IPv4 to DUT2 ingress interface	DUT1: no VAT command executed DUT2: no VAT command executed
TC04: DUT1 routes IPv4 to DUT2 egress interface	DUT1: no VAT command executed DUT2: no VAT command executed
TC05: DUT1 and DUT2 route IPv4 between TG interfaces	DUT1: no VAT command executed DUT2: no VAT command executed
TC06: DUT replies to ICMPv4 Echo Reqs with size 64B-to-1500B-incr-1B	DUT1: no VAT command executed DUT2: no VAT command executed
TC08: DUT replies to ARP request	DUT1: no VAT command executed DUT2: no VAT command executed

8.2.6.2. eth2p-ethip4-ip4base-ip4arp-func¶

IPv4 ARP test cases RFC826 ARP: Eth-IPv4 and Eth-ARP on links TG-DUT1, TG-DUT2, DUT1-DUT2: IPv4 ARP tests use 3-node topology TG - DUT1 - DUT2 - TG with one link between the nodes. DUT1 and DUT2 are configured with IPv4 routing and static routes. DUT ARP functionality is tested by making TG send ICMPv4 Echo Requests towards its other interface via DUT1 and DUT2.

Name

VPP API Test (VAT) Commands History - Commands Used Per Test Case

TC01: DUT sends ARP Request for unresolved locally connected IPv4 address

 DUT1: 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_dump 
 sw_interface_add_del_address sw_if_index 1 192.168.1.1/24 
 sw_interface_add_del_address sw_if_index 3 192.168.2.1/24 
  
 DUT2: 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_dump 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_l2_xconnect rx_sw_if_index 3 tx_sw_if_index 1 
 sw_interface_set_l2_xconnect rx_sw_if_index 1 tx_sw_if_index 3

TC02: DUT sends ARP Request for route next hop IPv4 address

 DUT1: 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_dump 
 sw_interface_add_del_address sw_if_index 1 192.168.1.1/24 
 sw_interface_add_del_address sw_if_index 3 192.168.2.1/24 
 ip_add_del_route 32.0.0.1/24 via 192.168.2.2  sw_if_index 3  count 1    
  
 DUT2: 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_dump 
 sw_interface_set_flags sw_if_index 3 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_set_l2_xconnect rx_sw_if_index 3 tx_sw_if_index 1 
 sw_interface_set_l2_xconnect rx_sw_if_index 1 tx_sw_if_index 3

8.2.6.3. eth2p-ethip4-ip4base-ip4ecmp-func¶

Ipv4 Multipath routing test cases

[Top] Network topologies: TG=DUT 2-node topology with two links between nodes.

[Cfg] DUT configuration: On DUT configure interfaces IPv4 adresses, and multipath routing.

[Ver] TG verification: Test packets are sent from TG on the first link to DUT. Packet is received on TG on the second link from DUT1.

Name

VPP API Test (VAT) Commands History - Commands Used Per Test Case

TC01: IPv4 Equal-cost multipath routing

 DUT1: 
 sw_interface_set_flags sw_if_index 2 admin-up 
 sw_interface_set_flags sw_if_index 1 admin-up 
 sw_interface_dump 
 sw_interface_add_del_address sw_if_index 1 192.168.1.1/24 
 sw_interface_add_del_address sw_if_index 2 192.168.2.1/24 
 ip_neighbor_add_del sw_if_index 2 dst 192.168.2.10 mac 02:00:00:00:00:02 
 ip_neighbor_add_del sw_if_index 2 dst 192.168.2.20 mac 02:00:00:00:00:03 
 ip_add_del_route 32.0.0.1/24 via 192.168.2.10  sw_if_index 2  count 1  multipath  
 ip_add_del_route 32.0.0.1/24 via 192.168.2.20  sw_if_index 2  count 1  multipath  
  
 DUT2: 
 no VAT command executed

8.2.6.4. eth2p-ethip4-ip4base-ip4proxyarp-func¶

RFC1027 Proxy ARP test cases

[Top] Network topologies: TG-DUT1 2-node topology with single link between nodes.

[Cfg] DUT configuration: DUT1 is configured with Proxy ARP

[Ver] TG verification: Test ARP Request packet is sent from TG on link to DUT1; on receive TG verifies ARP reply packet for correctness and their IPv4 src-addr, dst-addr and MAC addresses.

[Ref] Applicable standard specifications: RFC1027.

Name	VPP API Test (VAT) Commands History - Commands Used Per Test Case
TC01: DUT sends ARP reply on behalf of another machine from the IP range	DUT1: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump sw_interface_add_del_address sw_if_index 1 10.0.0.1/24 proxy_arp_add_del 192.168.1.2 - 192.168.1.10 sw_interface_dump proxy_arp_intfc_enable_disable sw_if_index 1 enable DUT2: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump
TC02: DUT sends ARP reply on behalf of another machine from beginning of the IP range	DUT1: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump sw_interface_add_del_address sw_if_index 1 10.0.0.1/24 proxy_arp_add_del 192.168.1.2 - 192.168.1.10 sw_interface_dump proxy_arp_intfc_enable_disable sw_if_index 1 enable DUT2: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump
TC03: DUT sends ARP reply on behalf of another machine from end of the IP range	DUT1: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump sw_interface_add_del_address sw_if_index 1 10.0.0.1/24 proxy_arp_add_del 192.168.1.2 - 192.168.1.10 sw_interface_dump proxy_arp_intfc_enable_disable sw_if_index 1 enable DUT2: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump
TC04: DUT does not send ARP reply on behalf of another machine from below of the IP range	DUT1: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump sw_interface_add_del_address sw_if_index 1 10.0.0.1/24 proxy_arp_add_del 192.168.1.2 - 192.168.1.10 sw_interface_dump proxy_arp_intfc_enable_disable sw_if_index 1 enable DUT2: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump
TC05: DUT does not send ARP reply on behalf of another machine from above of the IP range	DUT1: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump sw_interface_add_del_address sw_if_index 1 10.0.0.1/24 proxy_arp_add_del 192.168.1.2 - 192.168.1.10 sw_interface_dump proxy_arp_intfc_enable_disable sw_if_index 1 enable DUT2: sw_interface_set_flags sw_if_index 1 admin-up sw_interface_set_flags sw_if_index 3 admin-up sw_interface_dump