1 Test and Demonstrate SRv6 Mobile User Plane Plugin
2 ========================
6 To play with SRv6 Mobile User Plane on VPP, you need to install following packages:
12 Python packages (use pip):
20 1. Build up the docker container image as following:
23 $ git clone https://github.com/filvarga/srv6-mobile.git
24 $ cd ./srv6-mobile/src/plugins/srv6-mobile/extra
25 $ ./runner.py infra build
28 REPOSITORY TAG IMAGE ID CREATED SIZE
29 srv6m-image latest 577e786b7ec6 2 days ago 8GB
30 ubuntu 18.04 4c108a37151f 4 weeks ago 64.2MB
34 The runner script [runner.py](runner.py) has features to automate configurations and procedures for the test.
36 2. Instantiate test Scenario
38 Let's try following command to instantiate a topology:
41 $ ./runner.py infra start
44 This command instantiates 4 VPP containers with following topology:
46 ![Topology Diagram](topo-init.png)
48 You can check the instantiated docker instances with "docker ps".
53 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
54 44cb98994500 srv6m-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-4
55 6d65fff8aee9 srv6m-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-3
56 ad123b516b24 srv6m-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-2
57 5efed405b96a srv6m-image "/bin/sh -c 'vpp -c …" About a minute ago Up About a minute hck-vpp-1
61 You can login to and configure each instantiated container.
64 $ ./runner.py cmd vppctl 0
67 connecting to: hck-vpp-1
69 __/ __/ _ \ (_)__ | | / / _ \/ _ \
70 _/ _// // / / / _ \ | |/ / ___/ ___/
71 /_/ /____(_)_/\___/ |___/_/ /_/
77 ### SRv6 Drop-in between GTP-U tunnel
79 This test scenario introduces SRv6 path between GTP-U tunnel transparently. A GTP-U packet sent out from one end to another is translated to SRv6 and then back to GTP-U. All GTP-U tunnel identifiers are preserved in IPv6 header and SRH.
82 #### GTP-U over UDP/IPv4 case
84 This case uses SRv6 end functions, T.M.GTP4.D and End.M.GTP4.E.
86 ![Topology Diagram](topo-test_gtp4d.png)
88 VPP1 is configured with "T.M.GTP4.D", and VPP4 is configured with "End.M.GTP4.E". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv4 toward the packet capture. VPP1 translates it to SRv6 toward D4::TEID with SR policy <D2::, D3::> in SRH. VPP4 translates the SRv6 packet to the original GTP-U packet and send out to the packet capture.
90 To start this case with IPv4 payload over GTP-U, you can run:
93 $ ./runner.py test gtp4
96 If you want to use IPv6 payload instead of IPv4, you can run:
99 $ ./runner.py test gtp4_ipv6
102 If you use the latest scapy codes from the master branch, you can test the functions with GTP-U packet in 5G format:
105 $ ./runner.py test gtp4_5g
110 #### GTP-U over UDP/IPv6 case
112 This case uses SRv6 end functions, End.M.GTP6.D.Di and End.M.GTP6.E.
114 ![Topology Diagram](topo-test_gtp6d.png)
116 VPP1 is configured with "End.M.GTP6.D.Di", and VPP4 is configured with "End.M.GTP4.E". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv6 toward D:: of the packet capture. VPP1 translates it to SRv6 toward D:: with SR policy <D2::, D3::, D4::TEID> in SRH. VPP4 translates the SRv6 packet to the original GTP-U packet and send out to the packet capture.
118 To start this case with IPv4 payload over GTP-U, you can run:
121 $ ./runner.py test gtp6_drop_in
124 If you want to use IPv6 payload instead of IPv4, you can run:
127 $ ./runner.py test gtp6_drop_in_ipv6
133 This test scenario demonstrates GTP-U to SRv6 translation. A GTP-U packet sent out from one end to another is translated to SRv6.
135 #### GTP-U over UDP/IPv6 case
139 This case uses SRv6 end functions, End.M.GTP6.D and End.DT4.
141 ![Topology Diagram](topo-test_gtp6.png)
143 VPP1 is configured with "End.M.GTP6.D", and VPP4 is configured with "End.DT4". Others are configured with "End". The packet generator sends a GTP-U packet over UDP/IPv6 toward D::2. VPP1 translates it to SRv6 toward the IPv6 destination consists of D4:: and TEID of GTP-U with SR policy <D2::, D3::> in SRH. VPP4 decapsulates the SRv6 packet and lookup the table for the inner IPv4 packet and send out to the packet capture.
145 To start this case, you can run:
148 $ ./runner.py test gtp6
153 This case uses SRv6 end functions, End.M.GTP6.D and End.DT6.
156 ![Topology Diagram](topo-test_gtp6ip6.png)
158 The configurations are same with IPv4 payload case, except D4:: is configured as "End.DT6" in VPP4. VPP4 decapsulates the SRv6 packet and lookup the table for the inner IPv6 packet and send out to the packet capture.
160 If you want to use IPv6 payload instead of IPv4, you can run:
163 $ ./runner.py test gtp6_ipv6
168 - @subpage runner_doc.md