Private vlan with fabric attach

[SimoneZ]

Hello,

we want to deploy private vlans in our fabric attach infrastructure, in order to limit the traffic in the same subnet.

All the endpoints are connected to access switches (that are in SwitchEngine/EXOS), while core switches are used only as distribution layer.

For EXOS, I had this link as a reference

https://documentation.extremenetworks.com/exos_30.4/GUID-56B81F2C-8A3B-4303-A212-92322613EFAA.shtml

Where it is possible to extend the private vlans between switches. My question is, which configuration is needed on backbone switches (fabric engine), to extend the private vlans between access switches?

[Ludovico_Steven]

If you deploy FabricEngine to the access, you can use PVLANs, and you can use RADIUS authentication (MAC based or 802.1X) to automatically place a user/device in the PVLAN of choice. These PVLANs will have L2 I-SID associated, so the PVLAN can easily span the entire fabric if needed. But note that Fabric Engine does not support PVLAN Community VLAN ids; all you have is the primary and secondary VLAN ids, for isolated and promiscuous users.

Switch Engine also supports PVLANs, including the PVLAN Communities. But if you are using Switch Engine FA Proxy access off a Fabric Engine Fabric FA Server(s), then PVLANs cannot be used, as Fabric Attach signalling can only signal 1 VID per I-SID. You would have to disable FA between the Switch Engine and the Fabric Engine, and q-tag trunk all the PVLANs manually.

[Myra1 · Accepted solution]

To set up a Private VLAN (PVLAN) with Fabric Attach, integrating a context like "Animesuge" for easier understanding, let's break down the basics: Private VLAN (PVLAN): A PVLAN is used in network segmentation to isolate traffic within the same VLAN, allowing for more secure and efficient traffic management. It consists of primary and secondary VLANs, where the secondary VLANs are either isolated or community VLANs, offering different levels of isolation among devices. Fabric Attach: This is a network automation protocol often used in Software Defined Networking (SDN) to simplify the deployment of network services. With Fabric Attach, the network automatically assigns VLANs and other configurations to connected devices, making network setup faster and less error-prone. Using Animesuge as an Example Context: Imagine Animesuge needs to isolate its servers (database, content delivery, web servers) for security while still being part of a larger network. By setting up a PVLAN, you can place each server type into isolated or community VLANs. Using Fabric Attach would then allow these servers to be dynamically assigned to the correct VLANs as they come online or change location within the network, enhancing both security and management efficiency.

[Richard13]

A Private VLAN (PVLAN) with Fabric Attach is a networking concept that combines the isolation benefits of private VLANs with the automated provisioning and configuration capabilities of Fabric Attach in modern network architectures.

Private VLAN Overview

• Purpose: Used to enhance security and limit broadcast domains in a larger VLAN by subdividing it into smaller, isolated groups.
• Types of Ports in PVLAN:
  • Promiscuous Ports: Can communicate with all other ports in the PVLAN.
  • Isolated Ports: Can only communicate with promiscuous ports, not with other isolated or community ports.
  • Community Ports: Can communicate with other community ports and promiscuous ports but not with isolated ports.

Fabric Attach Overview

• Purpose: Simplifies the deployment of VLANs, PVLANs, and other network services by automating their configuration through dynamic signaling mechanisms.
• Key Features:
  • Auto-discovery of VLANs and PVLAN configurations.
  • Integration with management platforms like IEEE 802.1Qbg (Edge Virtual Bridging) for network virtualization.
  • Simplified scaling for complex network architectures.
  • Visit for more information: https://aniwave.com.pl/

[Leslie11]

Private VLAN with Fabric Attach: Overview and Explanation

Private VLANs (PVLANs) are an advanced VLAN feature that provides enhanced network isolation and segmentation within a single VLAN domain. They allow for granular traffic control between devices in the same VLAN, supporting security and scalability. Fabric Attach (FA), on the other hand, is an automated network provisioning protocol designed to simplify the deployment of services like VLANs or PVLANs in complex networks.

How Private VLANs Work

1. Primary VLAN: Acts as the overarching VLAN where all devices are associated.
2. Secondary VLANs: Subdivided into:
   • Isolated VLANs: Devices can only communicate with the promiscuous port (typically connected to a router or gateway) and not with each other.
   • Community VLANs: Devices within the same community can communicate but are isolated from other communities and isolated VLANs. Visit: https://zoroxtv.mom/