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diff --git a/docs/vpp/limitations.md b/docs/vpp/limitations.md new file mode 100644 index 00000000..9582347a --- /dev/null +++ b/docs/vpp/limitations.md @@ -0,0 +1,42 @@ +--- +lastproofread: '2026-02-17' +--- + +(vpp-limitations)= + +```{include} /_include/need_improvement.txt +``` + +# VPP Dataplane Limitations + +VPP Dataplane provides significant performance advantages, but has some +limitations you should consider. + +- **Feature Parity** + + VPP does not support all features available in the Linux kernel dataplane. + Some networking features, specific protocols, or services may not be + available. + + While VPP supports various interface types similar to the kernel, their + capabilities may differ. + +- **NIC and Driver Compatibility** + + VyOS currently supports only DPDK drivers for network interfaces. + Not all network interface cards are compatible with DPDK drivers. + +- **Data Path Limitations** + + If a feature exists only in the kernel dataplane, traffic that uses that + feature cannot traverse VPP interfaces. Examples include: + + - Firewall + - QoS + + When traffic uses the pure VPP path, it does not reach the kernel, where + such features are implemented. Plan how traffic flows through your VyOS + instance to ensure it reaches the necessary features. + + VPP provides native alternatives for some features. For example, VPP + native ACLs provide basic firewall functionality. |
