From fa54a080fac977157454beb0853daf0ac0e6af66 Mon Sep 17 00:00:00 2001
From: Yuriy Andamasov <yuriy@vyos.io>
Date: Sat, 2 May 2026 17:25:47 +0300
Subject: feat(swap): import .md files and webp transition from myst/current
MIME-Version: 1.0
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Selective import from origin/myst/current (cf9c9b34):
- Add/update 255 .md files (full MyST conversion plus webp ref updates)
- Delete 175 PNG/JPG from docs/_static/images (webp twins already present)
- Delete 5 autotest topology.png (webp twins already present)

Preserved on swap (untouched):
- All .rst files (incremental swap pattern)
- conf.py, _ext/, _include/*.txt, .gitignore
- 115 canary md-*.md files
- 7 superpowers/specs/*.md design docs
- Logos vyos-logo.png / vyos-logo-icon.png (referenced by conf.py)

🤖 Generated by [robots](https://vyos.io)
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 docs/vpp/description.md | 87 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 docs/vpp/description.md

(limited to 'docs/vpp/description.md')

diff --git a/docs/vpp/description.md b/docs/vpp/description.md
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+++ b/docs/vpp/description.md
@@ -0,0 +1,87 @@
+---
+lastproofread: '2026-02-16'
+---
+
+(vpp-description)=
+
+```{include} /_include/need_improvement.txt
+```
+
+
+# VPP Dataplane Description
+
+## What is VPP in VyOS?
+
+VyOS supports two packet forwarding dataplanes:
+- **Linux kernel dataplane** (traditional)
+- **Vector Packet Processor (VPP) dataplane** (optional)
+
+VPP is a high-performance user space packet processor that improves
+throughput for demanding network workloads.
+
+## Key Benefits
+
+**Performance Improvement**
+
+VPP uses vector-based packet processing instead of one-by-one handling,
+delivering:
+- **Higher throughput** compared to kernel forwarding.
+- **Lower and more consistent latency** for time-sensitive applications.
+- **Linear scaling** with additional CPU cores.
+
+**VyOS Hybrid Integration**
+
+VyOS supports both dataplanes simultaneously, providing:
+- **Cross-dataplane forwarding**: Traffic can flow between the VPP dataplane
+  and kernel interfaces seamlessly.
+- **Transparent configuration**: Same CLI commands and most services work
+  regardless of dataplane.
+- **Gradual migration**: Enable VPP on high-traffic interfaces while keeping
+  others on kernel.
+
+## When to Use VPP
+
+**Consider VPP if you have:**
+- High-throughput requirements
+- Latency-sensitive applications requiring consistent performance
+
+**Stay with kernel dataplane if you have:**
+- Low to moderate traffic volumes
+- No latency-sensitive workloads
+- Applications requiring specific features not supported by VPP Dataplane
+
+## Packet Processing Integration
+
+VPP Dataplane integration minimizes configuration changes. Features in the
+kernel dataplane continue to operate there. VPP Dataplane only handles packet
+forwarding for interfaces explicitly assigned to it.
+
+Traffic flow examples between VPP and kernel dataplane interfaces:
+
+```{image} /_static/images/vpp/vyos_vpp_integration.svg
+:align: center
+```
+
+
+### Green path
+
+Traffic between two VPP interfaces stays within VPP for maximum performance
+and can use only VPP dataplane features.
+
+### Blue path
+
+Traffic between a VPP interface and a kernel interface is processed by both
+dataplanes and can use features from both.
+
+**Note:** This path has slower performance than pure VPP or pure kernel
+forwarding because packets traverse both dataplanes.
+
+### Red path
+
+Traffic between two kernel interfaces stays within the kernel dataplane without
+VPP acceleration. This is the traditional VyOS dataplane operation.
+
+## CLI Integration
+
+VyOS CLI commands work with both dataplanes. Use the same commands to
+configure interfaces, routing, and other features regardless of the dataplane.
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