2.24. test_ip6_vrf_multi_instance module

IP6 VRF Multi-instance Test Case HLD:

NOTES:
  • higher number of pg-ip6 interfaces causes problems => only 15 pg-ip6 interfaces in 5 VRFs are tested
  • jumbo packets in configuration with 15 pg-ip6 interfaces leads to problems too
config 1
  • add 15 pg-ip6 interfaces
  • configure 5 hosts per pg-ip6 interface
  • configure 4 VRFs
  • add 3 pg-ip6 interfaces per VRF
test 1
  • send IP6 packets between all pg-ip6 interfaces in all VRF groups
verify 1
  • check VRF data by parsing output of ip6_fib_dump API command
  • all packets received correctly in case of pg-ip6 interfaces in VRF
  • no packet received in case of pg-ip6 interfaces not in VRF
config 2
  • reset 2 VRFs
test 2
  • send IP6 packets between all pg-ip6 interfaces in all VRF groups
verify 2
  • check VRF data by parsing output of ip6_fib_dump API command
  • all packets received correctly in case of pg-ip6 interfaces in VRF
  • no packet received in case of pg-ip6 interfaces not in VRF
config 3
  • add 1 of reset VRFs and 1 new VRF
test 3
  • send IP6 packets between all pg-ip6 interfaces in all VRF groups
verify 3
  • check VRF data by parsing output of ip6_fib_dump API command
  • all packets received correctly in case of pg-ip6 interfaces in VRF
  • no packet received in case of pg-ip6 interfaces not in VRF
config 4
  • reset all VRFs (i.e. no VRF except VRF=0 created)
test 4
  • send IP6 packets between all pg-ip6 interfaces in all VRF groups
verify 4
  • check VRF data by parsing output of ip6_fib_dump API command
  • all packets received correctly in case of pg-ip6 interfaces in VRF
  • no packet received in case of pg-ip6 interfaces not in VRF
class test_ip6_vrf_multi_instance.TestIP6VrfMultiInst(methodName='runTest')

Bases: framework.VppTestCase

IP6 VRF Multi-instance Test Case

create_stream(src_if, packet_sizes)

Create input packet stream for defined interface using hosts list.

Parameters:
  • src_if (object) – Interface to create packet stream for.
  • packet_sizes (list) – List of required packet sizes.
Returns:

Stream of packets.
create_vrf_and_assign_interfaces(count, start=1)

Create required number of FIB tables / VRFs, put 3 l2-pg interfaces to every FIB table / VRF.

Parameters:
  • count (int) – Number of FIB tables / VRFs to be created.
  • start (int) – Starting number of the FIB table / VRF ID. (Default value = 1)
reset_vrf(vrf_id)

Reset required FIB table / VRF.

Parameters:vrf_id (int) – The FIB table / VRF ID to be reset.
run_verify_test()
Create packet streams for all configured l2-pg interfaces, send all prepared packet streams and verify that:
  • all packets received correctly on all pg-l2 interfaces assigned to bridge domains
  • no packet received on all pg-l2 interfaces not assigned to bridge domains
Raises:RuntimeError – If no packet captured on l2-pg interface assigned to the bridge domain or if any packet is captured on l2-pg interface not assigned to the bridge domain.
setUp()

Clear trace and packet infos before running each test.

classmethod setUpClass()

Perform standard class setup (defined by class method setUpClass in class VppTestCase) before running the test case, set test case related variables and configure VPP.

tearDown()

Show various debug prints after each test.

test_ip6_vrf_01()

IP6 VRF Multi-instance test 1 - create 4 VRFs

test_ip6_vrf_02()

IP6 VRF Multi-instance test 2 - reset 2 VRFs

test_ip6_vrf_03()

IP6 VRF Multi-instance 3 - add 2 VRFs

test_ip6_vrf_04()

IP6 VRF Multi-instance test 4 - reset 4 VRFs

verify_capture(pg_if, capture)

Verify captured input packet stream for defined interface.

Parameters:
  • pg_if (object) – Interface to verify captured packet stream for.
  • capture (list) – Captured packet stream.
verify_vrf(vrf_id)

Check if the FIB table / VRF ID is configured.

Parameters:vrf_id (int) – The FIB table / VRF ID to be verified.
Returns:1 if the FIB table / VRF ID is configured, otherwise return 0.
test_ip6_vrf_multi_instance.is_ipv6_misc_ext(p)

Is packet one of uninteresting IPv6 broadcasts (extended to filter out ICMPv6 Neighbor Discovery - Neighbor Advertisement packets too)?