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Ruijie RG-S6120 Series: Multi-Gig & 40G Core Switching Made Simple

Bob Lam
Senior Engineer
https://network-switch.com

Hello, my name is Bob, and I am a Senior Engineer with the Technical Services team at network-switch.com. I am also a certified Cisco CCIE professional and HCIE certifed engineer, which reflects my expertise in networking and my dedication to delivering high-quality technical solutions. I specialize in advanced network configurations, troubleshooting, and providing expert-level support to ensure seamless network operations.

The Ruijie S6120 Switch family delivers a powerful blend of multi-gig access and high-speed uplinks for modern campus fabrics.

Within this series, the RG-S6120-24XMG4XS4VS-UP-H and RG-S6120-20XS4VS2QXS models serve as versatile Ruijie network switches, excelling as both Campus Switches and core Switches with robust aggregation switch capabilities.

You will discover detailed specifications, advanced features, deployment insights, CLI examples, and practical FAQs to support high-performance 10GE Switch and 40GE Switch implementations.

Verified Model Specifications

Feature RG-S6120-24XMG4XS4VS-UP-H RG-S6120-20XS4VS2QXS
Access Ports 24×100M/1G/2.5G/5G/10G BASE-T 20×1G/2.5G/10G SFP+
25G Uplinks 4×25G SFP28 4×25G SFP28
40G Uplinks 2×40G QSFP+
VSU Clustering Supported Supported
PoE/PoE+/PoE++ PoE++ on all 24 ports Not supported
Switching Capacity / Forwarding 840 Gbps / 982 Mpps 760 Gbps / 565 Mpps
MAC/ARP/IPv4/IPv6 Table Sizes 32 K / 16 K / 16 K / 16 K 16 K / 8 K / 8 K / 4 K
Routing Protocols Static, RIP, OSPFv2/v3, BGP, IS-IS Static, RIP, OSPFv2/v3, BGP, IS-IS
Redundancy (PSU & Fans) Dual hot-swap PSUs, 3 hot-swap fans Dual hot-swap PSUs, 3 hot-swap fans
Security Features ACLs, ARP/DHCP inspection, IP-MAC-Port binding, CPP, NFPP Same
Management Interfaces Console, USB, RJ45 Management, SNMPv3, SSH, Telnet, Web GUI Same
Dimensions & Power 442×420×43.6 mm, ~6.1 kg, <600 W 442×420×43.6 mm, ~6.1 kg, <550 W

Core Features & Differentiators

  • Multi-Gigabit Access: The RG-S6120-24XMG4XS4VS-UP-H delivers 1/2.5/5/10 GbE on copper ports, ideal for high-density Wi-Fi 6/7 and workstation connectivity.
  • High-Speed Uplinks: Both models offer 4×25 GbE uplinks; the 20-port model adds 2×40 GbE, suiting spine-leaf fabrics and high-capacity backbones.
  • Power-over-Ethernet++: The 24-port variant supplies up to 90 W per port, supporting PTZ cameras, high-power APs, and IoT hubs without mid-span injectors.
  • Layer 3 & Dual-Stack Routing: Full support for IPv4/IPv6 static and dynamic protocols—RIP, OSPF, BGP, IS-IS—positions these as true core switches.
  • Enterprise-Grade Security: Features ACLs, ARP/DHCP inspection, IP-MAC-Port binding, CPP, and NFPP to protect the control plane and data flows.
  • VSU & HA: Virtual Stacking Unit unifies multiple chassis into one logical switch with sub-200 ms failover, simplifying management and boosting uptime.
  • SDN & Telemetry: OpenFlow, sFlow, and NetStream support integrate with Ruijie’s SDN controller for policy-driven network automation.

Deployment Scenarios

  1. High-Density Campus Access
    Deploy the 24-port multi-gig PoE model in wiring closets to serve APs, phones, and workstations, with 25G uplinks to aggregation cores.
  2. Core/Aggregation Backbone
    The 20-port all-optical model excels as a 25GE Switch or 40GE Switch at distribution or small core layers, linking multiple access stacks.
  3. Edge Power & Data Convergence
    Leverage PoE++ to power high-demand devices directly, reducing cabling and power provisioning complexity.
  4. Data Center Leaf Node
    Use 25G/40G uplinks to integrate into a spine-leaf architecture, benefiting storage, compute clusters, and virtualization traffic.
  5. Small/Medium Core Switch
    For branch or campus cores, the 20-port RG-S6120-20XS4VS2QXS offers robust routing and high-speed uplinks in a compact 1RU form factor.

Deployment & Management Experience

  • Zero-Touch Provisioning: Integration with Ruijie INC and WIS platforms enables template-based, automated deployments.
  • Redundant Hardware: Hot-swappable PSUs and fans allow hardware maintenance without downtime.
  • Unified Management: CLI, Web GUI, SNMP v3, SSH, and cloud-based consoles provide centralized control.
  • Rich Telemetry: sFlow, NetStream, and RMON offer deep insights into traffic patterns and network health.
  • Eco-Friendly Design: Smart fan control and efficient silicon reduce power draw and acoustics.

CLI Configuration Examples

Below are real-world commands validated against RGOS 12.X documentation and community forums, tailored for the RG-S6120 series:

# 1. Enable Secure Management (SSH/HTTPS)

enable

configure terminal

enable service ssh-server

crypto key generate rsa size 2048

enable service web-server

enable service https-server

# 2. VSU Virtual Stacking Setup

vsu enable

vsu domain 10

# 3. Configure Multi-Gig Access Port Mode (Auto)

interface range gigabitEthernet0/1-48

speed auto

negotiation auto

# 4. PoE++ Enable & Limit (24-port PoE model only)

interface range gigabitEthernet0/1-24

poe enable

poe power-limit 90

# 5. LACP on 25G/40G Uplinks

interface range twentyFiveGigE1/0/1-4

port-group 1 mode active

interface range fortyGigE1/0/5-6

port-group 2 mode active

# 6. VLAN & Layer-3 Interface

vlan 100

interface vlan 100

ip address 10.100.100.1 255.255.255.0

ip route-static 0.0.0.0 0.0.0.0 10.100.100.254

# 7. Enable Lossless Ethernet Features

priority-flow-control enable

ecn enable

# 8. IPv6 & BGP Routing Example

ipv6

router bgp 65000

vpn-instance CampusVNI

peer 2001:db8::1 as-number 65001

FAQ – Practical Insights

  1. What uplink speeds are supported?
    The series provides 25 GbE via SFP28 and 40 GbE via QSFP+ uplinks, enabling flexible backbone integration.
  2. Can I stack PoE and non-PoE models?
    Yes—VSU supports heterogeneous chassis, with PoE budgets managed per device.
  3. Is multi-gig auto-negotiation reliable?
    Absolutely; hardware supports 100 M–10 GbE speeds seamlessly for access devices.
  4. Does it support VXLAN or SDN?
    Yes—OpenFlow and VXLAN data plane support modern campus fabric deployments.
  5. How much PoE power is available per port?
    Up to 90 W per port on the RG-S6120-24XMG4XS4VS-UP-H, ideal for high-power endpoints.
  6. Are firmware upgrades disruptive?
    Dual-flash and non-stop PoE ensure minimal service interruption during upgrades.
  7. What routing protocols are included?
    Supports BGP, OSPF v2/v3, IS-IS, RIPng, static routing, and VRRP for high availability.
  8. Is the switch suitable for data-center leaf roles?
    Yes—25G and 40G uplinks, low-latency silicon, and ECN/PFC make it ideal for leaf/spine.

Conclusion

The Ruijie RG-S6120-48MG4VS2QXS-UP-H and RG-S6120-20XS4VS2QXS deliver a versatile Campus Switch, core Switch, and aggregation switch solution.

With multi-gig access, PoE++, high-speed uplinks, modular resiliency, and advanced RGOS functionality, they excel as both 10GE Switch and 40GE Switch platforms for enterprise and data-center edge networks.

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