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Metro Ethernet Rings & Cisco REP in Action | ME-3400 Series Demo

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Автор: Null0 Labs

Загружено: 2025-10-30

Просмотров: 413

Описание: In today's deep-dive, we explore the configuration and behavior of Cisco's Resilient Ethernet Protocol (REP) within a Metro Ethernet ring topology using real Cisco ME-3400 series switches.

What you'll see in this video:
• Step-by-step REP configuration on a Metro Ethernet ring
• Client connections added to UNI interfaces on both the West and East switches
• A live failure simulation of:
⁠◦ A switch failure to the North
⁠◦ A link failure between East and West switches
• Real-time failover demonstration showcasing REP’s rapid convergence
• A clear breakdown of the differences between UNI and NNI interfaces and their roles in service provider networks

Understanding ME-3400 Port Types:
UNI – User Network Interface. Port downstream (towards customer). Port can’t run STP,
CDP or Etherchannel protocols like PAgP and LACP.

ENI – Enhanced Network Interface. Also facing towards customer but this port can support
STP, CDP and Etherchannel protocols.

NNI – Network Node Interface. Sometimes also called network to network interface. This port
is facing upstream towards the core. This port has support for STP, CDP and Etherchannel protocols.

The Cisco ME-3400 series switches are purpose-built for Metro Ethernet deployments, and differ significantly from traditional Catalyst switches. They offer three distinct port types tailored for service provider environments:

00:00 - Intro
05:00 - REP configuration
12:45 - Add Customer
18:40 - Simulate Ring failure
24:44 - Move Cutomer and Create UNI-Community
29:18 - Ring Balancing configuration
33:56 - Outro

Link to Github for Configs: https://github.com/null0labs/MetroEth...
Link to ME3400 Docs: [Cisco](https://www.cisco.com/c/en/us/td/docs...)

🛠️ Stuff I Use 🛠️
EVE-NG - multivendor network emulation software.
Linux, Ubuntu, Debian
OSX, Windows
Networking hardware - Multi vendor

👨🏻‍💻 About Me:
Hi I'm Matt a Senior Network Engineer with over two decades of hands-on experience architecting, securing, and optimizing high-availability networks across enterprise environments. I stream labs and create video content to help others level up their skills.


💻 Social:
Website: [null0labs.com](https://null0labs.com)
GitHub: [@null0labs](https://github.com/null0labs)
Instagram: [@null0labs](  / null0labs  )
Twitter/X: [@null0labs](  / null0labs  )
LinkedIn:[@mlewisonline](  / mlewisonline  )


🙋🏻‍♂️ Questions or ideas? Drop them in the comments.

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Metro Ethernet Rings & Cisco REP in Action | ME-3400 Series Demo

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