Cilium vs Faucet

Cilium is an open-source, cloud-native system for providing, securing, and observing network connectivity between workloads using eBPF. Its networking capabilities include CNI, Layer 4 load balancing, Cluster Mesh, kube-proxy replacement, BGP, service mesh, Gateway API, IPv6, host firewall, and ingress. Network policies can enforce identity-aware rules from L3 through L7, including DNS- and HTTP-aware filtering. Security features include runtime protection and transparent encryption of managed host and endpoint traffic using IPsec, WireGuard, or ztunnel; ztunnel support is marked beta. For visibility, Cilium lists service maps, metrics and tracing export, network flow logs, and protocol visibility. Hubble, built on Cilium and eBPF, provides visibility into service communication and behavior. Documentation describes Prometheus and Grafana integrations and Kubernetes support for services including GKE, AKS, EKS, OpenShift, RKE, k3s, and Alibaba ACK. Its container image requires AMD64 or AArch64 hosts running Linux kernel 5.10 or later, or an equivalent kernel such as 4.18 on RHEL 8.10. For environments above 500 nodes, the quick installation guide directs readers to large-environment guidance or specific datapath modes.

Faucet is a free, open-source OpenFlow controller for network operators managing production networks and OpenFlow hardware. It moves routing, neighbour discovery and switching algorithms into vendor-independent server software with a centralised control plane. Faucet controls OpenFlow 1.3.x switches with multiple tables and group tables, supporting VLANs, IPv4 and IPv6, static and BGP routing, access control lists, port mirroring and switch stacking. Policy-based forwarding can offload processing to external systems, including 802.1X through hostapd. YAML provides network configuration, with a documented command for checking configuration before loading it. Installation options include pip3, apt-get and Docker; the guide places Faucet with Gauge, Prometheus and Grafana, while InfluxDB supplies time-series statistics. TLS can protect the switch control channel, and fail-secure or fail-standalone modes are available. High availability uses redundant controllers with matching configuration but no shared state. Faucet runs on Linux and self-hosted deployments and is licensed under Apache-2.0.