VPP Agent
The VPP Agent is a Go implementation of a control/management plane for VPP based cloud-native Virtual Network Functions (VNFs). The VPP Agent is built on top of CN Infra, a framework for developing cloud-native VNFs (CNFs).
The VPP Agent can be used as-is as a management/control agent for VNFs based on off-the-shelf VPP (e.g. a VPP-based vswitch), or as a framework for developing management agents for VPP-based CNFs. An example of a custom VPP-based CNF is the Contiv-VPP vswitch.
Please note that the content of this repository is currently WORK IN PROGRESS!
Status
Releases
| Release | Release Date | Info |
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latest release |
Have a look at the release notes for a complete list of changes.
Branches
| Branch | Info | Last Commit |
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has switched to v3 |
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has been DEPRECATED |  |
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provides legacy v2 |  |
All development is done against master branch.
Images
| Image | Image Size/Layers | Info | |
|---|---|---|---|
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with minimal footprint |
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prepared for developers |
Quickstart
For a quick start with the VPP Agent, you can use the pre-built Docker images on DockerHub that contain the VPP Agent and VPP: ligato/vpp-agent (or for ARM64: ligato/vpp-agent-arm64).
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Start ETCD on your host (e.g. in Docker as described here).
Note: for ARM64 see the information for etcd.
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Run VPP + VPP Agent in a Docker container:
docker run -it --rm --name agent1 --privileged ligato/vpp-agent
- Manage VPP agent using agentctl:
docker exec -it agent1 agentctl --help
docker exec -it agent1 agentctl status
- Check the configuration (via agentctl or in VPP console):
docker exec -it agent1 agentctl dump all
docker exec -it agent1 vppctl -s localhost:5002 show interface
Next Steps
See README of development docker image for more details.
Documentation
Extensive documentation for the VPP Agent can be found at docs.ligato.io.
Architecture
The VPP Agent is basically a set of VPP-specific plugins that use the CN-Infra framework to interact with other services/microservices in the cloud (e.g. a KV data store, messaging, log warehouse, etc.). The VPP Agent exposes VPP functionality to client apps via a higher-level model-driven API. Clients that consume this API may be either external (connecting to the VPP Agent via REST, gRPC API, Etcd or message bus transport), or local Apps and/or Extension plugins running on the same CN-Infra framework in the same Linux process.
The VNF Agent architecture is shown in the following figure:
Each (northbound) VPP API - L2, L3, ACL, ... - is implemented by a specific VNF Agent plugin, which translates northbound API calls/operations into (southbound) low level VPP Binary API calls. Northbound APIs are defined using protobufs, which allow for the same functionality to be accessible over multiple transport protocols (HTTP, gRPC, Etcd, ...). Plugins use the GoVPP library to interact with the VPP.
The following figure shows the VPP Agent in context of a cloud-native VNF, where the VNF's data plane is implemented using VPP/DPDK and its management/control planes are implemented using the VNF agent:
Contributing
If you are interested in contributing, please see the contribution guidelines.
