Stream of Knowledge

 Understanding VTP Versions, Revision Numbers, and VTP Pruning in Cisco Networks VLAN Trunking Protocol (VTP) is a vital tool for simplifying VLAN management in large Layer 2 networks. But not all VTP versions are created equal. Understanding the evolution from VTP v1 to VTP v3 , along with the role of the VTP Revision Number and VTP Pruning , is essential for every network engineer. 🔁 VTP Version Comparison ➡ VTP Version 1 Default on older Cisco switches Supports VLANs 1–1005 Transparent mode relays only matching domain/version messages Drops unknown TLVs ➡ VTP Version 2 Default on newer switches Adds support for extended VLANs (1006–4094) in transparent mode Forwards unknown TLVs Relays VTP messages regardless of domain/version in transparent mode Skips consistency checks if MD5 digest is valid ➡ VTP Version 3 Major upgrade with extended VLAN support in advertisements Supports Private VLANs and MST (Multiple Spanning Tree) Introduces Prim...