Overview

Ring Topology - Dual Switch Redundancy

Generated: 2026-09-05
Source: MAC address tables from Aruba JL253A and Siemens Scalance XR326-2C

Overview

This documentation describes the ring redundancy topology between two edge switches:

Physical Connection

                    ┌─────────────────┐
                    │   OpenWRT Router│
                    │ (Clacks)        │
                    └────────┬────────┘
                             │
          ┌──────────────────┼──────────────────┐
          │                  │                  │
    ┌─────▼─────┐    ┌───────▼───────┐  ┌──────▼──────┐
    │ Aruba JL253A│    │ Siemens XR   │  │ Other Devices│
    │ LAN-SW     │◄───►│ Scalance    │  │ (end stations)│
    └────────────┘    │ XR326-2C     │  └──────────────┘
                      └──────────────┘

Connection Paths

Primary Path (Suggested)

The primary path runs Router → Aruba Switch → Siemens Switch → End Devices.

1. Aruba Port ext-e 0/25 connects to router/firewall via SFP+ uplink
2. Aruba Port ext-e 0/26 connects to Siemens Port Ex0/26 (ring connection)
3. All other devices connect directly to Aruba switch ports

Alternate Path (Ring Redundancy)

When the primary uplink fails, traffic routes through:

1. Siemens Port Ex0/26 → Aruba Port ext-e 0/26
2. Traffic continues via Aruba’s main uplink path
3. MRP (Media Redundancy Protocol) handles failover automatically

MAC Address Analysis - Devices by VLAN and Access Path

Source Disclaimer

• AI Generated
• Human Generated
• AI Edited
• Human Edited