2.30. test_l2xc_multi_instance module

L2XC Multi-instance Test Case HLD:

NOTES:

• higher number (more than 15) of pg-l2 interfaces causes problems => only 14 pg-l2 interfaces and 10 cross-connects are tested
• jumbo packets in configuration with 14 l2-pg interfaces leads to problems too

config 1

• add 14 pg-l2 interfaces
• add 10 cross-connects (two cross-connects per pair of l2-pg interfaces)

test 1

• send L2 MAC frames between all pairs of pg-l2 interfaces

verify 1

• all packets received correctly in case of cross-connected l2-pg interfaces
• no packet received in case of not cross-connected l2-pg interfaces

config 2

• delete 4 cross-connects

test 2

• send L2 MAC frames between all pairs of pg-l2 interfaces

verify 2

• all packets received correctly in case of cross-connected l2-pg interfaces
• no packet received in case of not cross-connected l2-pg interfaces

config 3

• add new 4 cross-connects

test 3

• send L2 MAC frames between all pairs of pg-l2 interfaces

verify 3

• all packets received correctly in case of cross-connected l2-pg interfaces
• no packet received in case of not cross-connected l2-pg interfaces

config 4

• delete 10 cross-connects

test 4

• send L2 MAC frames between all pairs of pg-l2 interfaces

verify 4

• no packet received on all of l2-pg interfaces (no cross-connect created)

class test_l2xc_multi_instance.TestL2xcMultiInst(methodName='runTest')

Bases: framework.VppTestCase

L2XC Multi-instance Test Case

classmethod create_hosts(count)

Create required number of host MAC addresses and distribute them among interfaces. Create host IPv4 address for every host MAC address.

Parameters:count (int) – Number of hosts to create MAC/IPv4 addresses for.

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_xconnects(count, start=0)

Create required number of cross-connects (always two cross-connects per pair of packet-generator interfaces).

Parameters:

• count (int) – Number of cross-connects to be created.
• start (int) – Starting index of packet-generator interfaces. (Default value = 0)

delete_xconnects(count, start=0)

Delete required number of cross-connects (always two cross-connects per pair of packet-generator interfaces).

Parameters:

• count (int) – Number of cross-connects to be deleted.
• start (int) – Starting index of packet-generator interfaces. (Default value = 0)

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 cross-connects
• no packet received on all pg-l2 interfaces not assigned to cross-connects

Raises:RuntimeError – if no packet captured on l2-pg interface assigned to the cross-connect or if any packet is captured on l2-pg interface not assigned to the cross-connect.

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_l2xc_inst_01()

L2XC Multi-instance test 1 - create 10 cross-connects

test_l2xc_inst_02()

L2XC Multi-instance test 2 - delete 4 cross-connects

test_l2xc_inst_03()

L2BD Multi-instance 3 - add new 4 cross-connects

test_l2xc_inst_04()

L2XC Multi-instance test 4 - delete 10 cross-connects

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.