---
title: "Ring Topology - Dual Switch Redundancy"
description: "## Overview"
section: nanda
raw: "RING_TOPOLOGY.md"
source: ai-generated
tags: network, aruba, siemens, vlan
last-updated: 2026-09-15
---

# 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:

| Switch | Model | Management IP | Role |
|--------|-------|---------------|------|
| LAN-SW | Aruba JL253A (2930F) | 192.168.28.240 | Primary edge switch |
| Siemens PoE Switch | Scalance XR326-2C | 192.168.28.241 | Secondary edge switch |

## Physical Connection

```text
                    ┌─────────────────┐
                    │   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

- [x] AI Generated
- [ ] Human Generated
- [ ] AI Edited
- [ ] Human Edited