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diff --git a/docs/testing/user/testspecification/vpn/index.rst b/docs/testing/user/testspecification/vpn/index.rst new file mode 100644 index 00000000..0a8a8d17 --- /dev/null +++ b/docs/testing/user/testspecification/vpn/index.rst @@ -0,0 +1,532 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) Ericsson AB + +====================== +VPN test specification +====================== + +.. toctree:: + :maxdepth: 2 + +Scope +===== + +The VPN test area evaluates the ability of the system under test to support VPN +networking for virtual workloads. The tests in this test area will evaluate +establishing VPN networks, publishing and communication between endpoints using +BGP and tear down of the networks. + +References +========== + +This test area evaluates the ability of the system to perform selected actions +defined in the following specifications. Details of specific features evaluated +are described in the test descriptions. + +- RFC 4364 - BGP/MPLS IP Virtual Private Networks + + - https://tools.ietf.org/html/rfc4364 + +- RFC 4659 - BGP-MPLS IP Virtual Private Network + + - https://tools.ietf.org/html/rfc4659 + +- RFC 2547 - BGP/MPLS VPNs + + - https://tools.ietf.org/html/rfc2547 + + +Definitions and abbreviations +============================= + +The following terms and abbreviations are used in conjunction with this test +area + +- BGP - Border gateway protocol +- eRT - Export route target +- IETF - Internet Engineering Task Force +- iRT - Import route target +- NFVi - Network functions virtualization infrastructure +- Tenant - An isolated set of virtualized infrastructures +- VM - Virtual machine +- VPN - Virtual private network +- VLAN - Virtual local area network + + +System Under Test (SUT) +======================= + +The system under test is assumed to be the NFVi and VIM in operation on a +Pharos compliant infrastructure. + + +Test Area Structure +=================== + +The test area is structured in four separate tests which are executed +sequentially. The order of the tests is arbitrary as there are no dependencies +across the tests. Specifially, every test performs clean-up operations which +return the system to the same state as before the test. + +The test area evaluates the ability of the SUT to establish connectivity +between Virtual Machines using an appropriate route target configuration, +reconfigure the route targets to remove connectivity between the VMs, then +reestablish connectivity by re-association. + + +Test Descriptions +================= + +---------------------------------------------------------------- +Test Case 1 - VPN provides connectivity between Neutron subnets +---------------------------------------------------------------- + +Short name +---------- + +opnfv.sdnvpn.subnet_connectivity + + +Use case specification +---------------------- + +This test evaluates the use case where an NFVi tenant uses a BGPVPN to provide +connectivity between VMs on different Neutron networks and subnets that reside +on different hosts. + + +Test preconditions +------------------ + +2 compute nodes are available, denoted Node1 and Node2 in the following. + + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for verifying connectivity +'''''''''''''''''''''''''''''''''''''' + +Connectivity between VMs is tested by sending ICMP ping packets between +selected VMs. The target IPs are passed to the VMs sending pings by means of a +custom user data script. Whether or not a ping was successful is determined by +checking the console output of the source VMs. + + +Test execution +'''''''''''''' + +* Create Neutron network N1 and subnet SN1 with IP range 10.10.10.0/24 +* Create Neutron network N2 and subnet SN2 with IP range 10.10.11.0/24 + +* Create VM1 on Node1 with a port in network N1 +* Create VM2 on Node1 with a port in network N1 +* Create VM3 on Node2 with a port in network N1 +* Create VM4 on Node1 with a port in network N2 +* Create VM5 on Node2 with a port in network N2 + +* Create VPN1 with eRT<>iRT +* Create network association between network N1 and VPN1 + +* VM1 sends ICMP packets to VM2 using ``ping`` + +* **Test assertion 1:** Ping from VM1 to VM2 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM3 using ``ping`` + +* **Test assertion 2:** Ping from VM1 to VM3 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM4 using ``ping`` + +* **Test assertion 3:** Ping from VM1 to VM4 fails: ``ping`` exits with a non-zero return code + +* Create network association between network N2 and VPN1 + +* VM4 sends ICMP packets to VM5 using ``ping`` + +* **Test assertion 4:** Ping from VM4 to VM5 succeeds: ``ping`` exits with return code 0 + +* Configure iRT=eRT in VPN1 + +* VM1 sends ICMP packets to VM4 using ``ping`` + +* **Test assertion 5:** Ping from VM1 to VM4 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM5 using ``ping`` + +* **Test assertion 6:** Ping from VM1 to VM5 succeeds: ``ping`` exits with return code 0 + +* Delete all instances: VM1, VM2, VM3, VM4 and VM5 + +* Delete all networks and subnets: networks N1 and N2 including subnets SN1 and SN2 + +* Delete all network associations and VPN1 + + +Pass / fail criteria +'''''''''''''''''''' + +This test evaluates the capability of the NFVi and VIM to provide routed IP +connectivity between VMs by means of BGP/MPLS VPNs. Specifically, the test +verifies that: + +* VMs in the same Neutron subnet have IP connectivity regardless of BGP/MPLS + VPNs (test assertion 1, 2, 4) + +* VMs in different Neutron subnets do not have IP connectivity by default - in + this case without associating VPNs with the same import and export route + targets to the Neutron networks (test assertion 3) + +* VMs in different Neutron subnets have routed IP connectivity after + associating both networks with BGP/MPLS VPNs which have been configured with + the same import and export route targets (test assertion 5, 6). Hence, + adjusting the ingress and egress route targets enables as well as prohibits + routing. + +In order to pass this test, all test assertions listed in the test execution +above need to pass. + + +Post conditions +--------------- + +N/A + +------------------------------------------------------------ +Test Case 2 - VPNs ensure traffic separation between tenants +------------------------------------------------------------ + +Short Name +---------- + +opnfv.sdnvpn.tenant_separation + + +Use case specification +---------------------- + +This test evaluates if VPNs provide separation of traffic such that overlapping +IP ranges can be used. + + +Test preconditions +------------------ + +2 compute nodes are available, denoted Node1 and Node2 in the following. + + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for verifying connectivity +'''''''''''''''''''''''''''''''''''''' + +Connectivity between VMs is tested by establishing an SSH connection. Moreover, +the command "hostname" is executed at the remote VM in order to retrieve the +hostname of the remote VM. The retrieved hostname is furthermore compared +against an expected value. This is used to verify tenant traffic separation, +i.e., despite overlapping IPs, a connection is made to the correct VM as +determined by means of the hostname of the target VM. + + + +Test execution +'''''''''''''' + +* Create Neutron network N1 +* Create subnet SN1a of network N1 with IP range 10.10.10.0/24 +* Create subnet SN1b of network N1 with IP range 10.10.11.0/24 + +* Create Neutron network N2 +* Create subnet SN2a of network N2 with IP range 10.10.10.0/24 +* Create subnet SN2b of network N2 with IP range 10.10.11.0/24 + +* Create VM1 on Node1 with a port in network N1 and IP 10.10.10.11. +* Create VM2 on Node1 with a port in network N1 and IP 10.10.10.12. +* Create VM3 on Node2 with a port in network N1 and IP 10.10.11.13. +* Create VM4 on Node1 with a port in network N2 and IP 10.10.10.12. +* Create VM5 on Node2 with a port in network N2 and IP 10.10.11.13. + +* Create VPN1 with iRT=eRT=RT1 +* Create network association between network N1 and VPN1 + +* VM1 attempts to execute the command ``hostname`` on the VM with IP 10.10.10.12 via SSH. + +* **Test assertion 1:** VM1 can successfully connect to the VM with IP + 10.10.10.12. via SSH and execute the remote command ``hostname``. The + retrieved hostname equals the hostname of VM2. + +* VM1 attempts to execute the command ``hostname`` on the VM with IP 10.10.11.13 via SSH. + +* **Test assertion 2:** VM1 can successfully connect to the VM with IP + 10.10.11.13 via SSH and execute the remote command ``hostname``. The + retrieved hostname equals the hostname of VM3. + +* Create VPN2 with iRT=eRT=RT2 +* Create network association between network N2 and VPN2 + +* VM4 attempts to execute the command ``hostname`` on the VM with IP 10.10.11.13 via SSH. + +* **Test assertion 3:** VM4 can successfully connect to the VM with IP + 10.10.11.13 via SSH and execute the remote command ``hostname``. The + retrieved hostname equals the hostname of VM5. + +* VM4 attempts to execute the command ``hostname`` on the VM with IP 10.10.11.11 via SSH. + +* **Test assertion 4:** VM4 cannot connect to the VM with IP 10.10.11.11 via SSH. + +* Delete all instances: VM1, VM2, VM3, VM4 and VM5 + +* Delete all networks and subnets: networks N1 and N2 including subnets SN1a, SN1b, SN2a and SN2b + +* Delete all network associations, VPN1 and VPN2 + + +Pass / fail criteria +'''''''''''''''''''' + +This test evaluates the capability of the NFVi and VIM to provide routed IP +connectivity between VMs by means of BGP/MPLS VPNs. Specifically, the test +verifies that: + +* VMs in the same Neutron subnet (still) have IP connectivity between each + other when a BGP/MPLS VPN is associated with the network (test assertion 1). + +* VMs in different Neutron subnets have routed IP connectivity between each + other when BGP/MPLS VPNs with the same import and expert route targets are + associated with both networks (assertion 2). + +* VMs in different Neutron networks and BGP/MPLS VPNs with different import and + export route targets can have overlapping IP ranges. The BGP/MPLS VPNs + provide traffic separation (assertion 3 and 4). + +In order to pass this test, all test assertions listed in the test execution +above need to pass. + + +Post conditions +--------------- + +N/A + +-------------------------------------------------------------------------------- +Test Case 3 - VPN provides connectivity between subnets using router association +-------------------------------------------------------------------------------- + +Short Name +---------- + +opnfv.sdnvpn.router_association + + +Use case specification +---------------------- + +This test evaluates if a VPN provides connectivity between two subnets by +utilizing two different VPN association mechanisms: a router association and a +network association. + +Specifically, the test network topology comprises two networks N1 and N2 with +corresponding subnets. Additionally, network N1 is connected to a router R1. +This test verifies that a VPN V1 provides connectivity between both networks +when applying a router association to router R1 and a network association to +network N2. + + +Test preconditions +------------------ + +2 compute nodes are available, denoted Node1 and Node2 in the following. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for verifying connectivity +'''''''''''''''''''''''''''''''''''''' + +Connectivity between VMs is tested by sending ICMP ping packets between +selected VMs. The target IPs are passed to the VMs sending pings by means of a +custom user data script. Whether or not a ping was successful is determined by +checking the console output of the source VMs. + + +Test execution +'''''''''''''' + +* Create a network N1, a subnet SN1 with IP range 10.10.10.0/24 and a connected router R1 +* Create a network N2, a subnet SN2 with IP range 10.10.11.0/24 + +* Create VM1 on Node1 with a port in network N1 +* Create VM2 on Node1 with a port in network N1 +* Create VM3 on Node2 with a port in network N1 +* Create VM4 on Node1 with a port in network N2 +* Create VM5 on Node2 with a port in network N2 + +* Create VPN1 with eRT<>iRT so that connected subnets should not reach each other + +* Create route association between router R1 and VPN1 + +* VM1 sends ICMP packets to VM2 using ``ping`` + +* **Test assertion 1:** Ping from VM1 to VM2 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM3 using ``ping`` + +* **Test assertion 2:** Ping from VM1 to VM3 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM4 using ``ping`` + +* **Test assertion 3:** Ping from VM1 to VM4 fails: ``ping`` exits with a non-zero return code + +* Create network association between network N2 and VPN1 + +* VM4 sends ICMP packets to VM5 using ``ping`` + +* **Test assertion 4:** Ping from VM4 to VM5 succeeds: ``ping`` exits with return code 0 + +* Change VPN1 so that iRT=eRT + +* VM1 sends ICMP packets to VM4 using ``ping`` + +* **Test assertion 5:** Ping from VM1 to VM4 succeeds: ``ping`` exits with return code 0 + +* VM1 sends ICMP packets to VM5 using ``ping`` + +* **Test assertion 6:** Ping from VM1 to VM5 succeeds: ``ping`` exits with return code 0 + +* Delete all instances: VM1, VM2, VM3, VM4 and VM5 + +* Delete all networks, subnets and routers: networks N1 and N2 including subnets SN1 and SN2, router R1 + +* Delete all network and router associations and VPN1 + + +Pass / fail criteria +'''''''''''''''''''' + +This test evaluates the capability of the NFVi and VIM to provide routed IP +connectivity between VMs by means of BGP/MPLS VPNs. Specifically, the test +verifies that: + +* VMs in the same Neutron subnet have IP connectivity regardless of the import + and export route target configuration of BGP/MPLS VPNs (test assertion 1, 2, 4) + +* VMs in different Neutron subnets do not have IP connectivity by default - in + this case without associating VPNs with the same import and export route + targets to the Neutron networks or connected Neutron routers (test assertion 3). + +* VMs in two different Neutron subnets have routed IP connectivity after + associating the first network and a router connected to the second network + with BGP/MPLS VPNs which have been configured with the same import and export + route targets (test assertion 5, 6). Hence, adjusting the ingress and egress + route targets enables as well as prohibits routing. + +* Network and router associations are equivalent methods for binding Neutron networks + to VPN. + +In order to pass this test, all test assertions listed in the test execution +above need to pass. + + +Post conditions +--------------- + +N/A + +--------------------------------------------------------------------------------------------------- +Test Case 4 - Verify interworking of router and network associations with floating IP functionality +--------------------------------------------------------------------------------------------------- + +Short Name +---------- + +opnfv.sdnvpn.router_association_floating_ip + + +Use case specification +---------------------- + +This test evaluates if both the router association and network association +mechanisms interwork with floating IP functionality. + +Specifically, the test network topology comprises two networks N1 and N2 with +corresponding subnets. Additionally, network N1 is connected to a router R1. +This test verifies that i) a VPN V1 provides connectivity between both networks +when applying a router association to router R1 and a network association to +network N2 and ii) a VM in network N1 is reachable externally by means of a +floating IP. + + +Test preconditions +------------------ + +At least one compute node is available. + +Basic test flow execution description and pass/fail criteria +------------------------------------------------------------ + +Methodology for verifying connectivity +'''''''''''''''''''''''''''''''''''''' + +Connectivity between VMs is tested by sending ICMP ping packets between +selected VMs. The target IPs are passed to the VMs sending pings by means of a +custom user data script. Whether or not a ping was successful is determined by +checking the console output of the source VMs. + + +Test execution +'''''''''''''' + +* Create a network N1, a subnet SN1 with IP range 10.10.10.0/24 and a connected router R1 +* Create a network N2 with IP range 10.10.20.0/24 + +* Create VM1 with a port in network N1 +* Create VM2 with a port in network N2 + +* Create VPN1 +* Create a router association between router R1 and VPN1 +* Create a network association between network N2 and VPN1 + + +* VM1 sends ICMP packets to VM2 using ``ping`` + +* **Test assertion 1:** Ping from VM1 to VM2 succeeds: ``ping`` exits with return code 0 + +* Assign a floating IP to VM1 + +* The host running the test framework sends ICMP packets to VM1 using ``ping`` + +* **Test assertion 2:** Ping from the host running the test framework to the + floating IP of VM1 succeeds: ``ping`` exits with return code 0 + +* Delete floating IP assigned to VM1 + +* Delete all instances: VM1, VM2 + +* Delete all networks, subnets and routers: networks N1 and N2 including subnets SN1 and SN2, router R1 + +* Delete all network and router associations as well as VPN1 + + +Pass / fail criteria +'''''''''''''''''''' + +This test evaluates the capability of the NFVi and VIM to provide routed IP +connectivity between VMs by means of BGP/MPLS VPNs. Specifically, the test +verifies that: + +* VMs in the same Neutron subnet have IP connectivity regardless of the import + and export route target configuration of BGP/MPLS VPNs (test assertion 1) + +* VMs connected to a network which has been associated with a BGP/MPLS VPN are + reachable through floating IPs. + +In order to pass this test, all test assertions listed in the test execution +above need to pass. + + +Post conditions +--------------- + +N/A |