Description
Juniper QFX5120 Ethernet Switch – Manageable – 3 Layer Supported – Modular – 272 W Power Consumption – Optical Fiber – 1U High – Rack-mountable – 1 Year Limited Warranty
Product Overview
The QFX5120 Switch delivers rich, low latency Layer 2/Layer 3 features and advanced EVPN-VXLAN capabilities, making it an ideal data center top-of-rack and distribution switch for campus enterprise deployments.
Featuring L3 gateway capabilities for routing between virtualized and bare-metal servers, the QFX5120 is designed for extremely agile data centers that require support for overlay/underlay network architectures. Native 25GbE with 100GbE uplink ports on the QFX5120-48Y and QFX5120-48YM, 10GbE/1GbE copper with 100GbE uplink ports on the QFX5120-48T, and 32 100GbE ports on the QFX5120-32C make the QFX5120 family ideal for spine-and-leaf network deployments.
Product Description
The Juniper Networks® QFX5120 Switch delivers high scale, high availability, and high performance for data center and campus deployments. The QFX5120 Switch is a versatile routing and switching platform addressing higher server access speed and campus distribution use cases while offering high-density 1GbE/10GbE/25GbE and 100GbE uplinks for collapsed spine data center or campus distribution deployments.
Product Options
The QFX5120 Switch includes four compact 1 U platforms—the QFX5120-48Y, the QFX5120-48YM, the QFX5120-48T, and the QFX5120-32C—that provide wire-speed packet performance, very low latency, and a rich set of Junos® operating system features.
QFX5120-48Y
The QFX5120-48Y is a 25GbE/100GbE data center leaf and campus distribution switch featuring:
- 48 25GbE (SFP28)/10GbE (SFP+)/1GbE (SFP) downlink ports
- Eight 100GbE (QSFP28)/40GbE (QSFP+) uplink ports
- Up to 2/4 Tbps (uni/bidirectional) of L2 and L3 performance, with latency as low as 800 nanoseconds
- A 2.2 GHz quad-core Intel CPU with 16 GB memory and 50 GB SSD storage
Using breakout cables, each of the eight 100GbE QSFP28 ports can be broken into four 25GbE SFP28 ports, while each 40GbE quad small form-factor pluggable plus (QSFP+) transceiver ports can be broken into four 10GbE small form-factor pluggable plus (SFP+) transceiver ports, increasing the total number of supported 25GbE and 10GbE ports per switch to 80.
QFX5120-48YM
The QFX5120-48YM is a 10GbE/25GbE/100GbE data center leaf and campus distribution switch featuring:
- 48 25GbE (SFP28)/10GbE (SFP+)/1GbE (SFP) downlink ports
- Eight 100GbE (QSFP28)/40GbE (QSFP+) uplink ports
- Up to 2/4 Tbps (uni/bidirectional) of L2 and L3 performance, with latency as low as 800 nanoseconds
- Media Access Control Security (MACsec) AES-256 support across all ports
- A 2.9 GHz quad-core Intel CPU with 16 GB memory and 100 GB SSD storage
When using breakout cables, two of the 100GbE QSFP28 ports (ports 50 and 52) can be broken into four 25GbE SFP28 or four 10GbE SFP+ ports, increasing the maximum number of 10GbE/25GbE ports supported to 56. When using breakouts, the total number of all ports on the switch, including 6x100GbE ports and 56×10/25GbE, is 62.
QFX5120-48T
The QFX5120-48T is a 10GbE/100GbE data center leaf and campus distribution switch featuring:
- 48 dual-speed 1GbE/10GbE RJ-45 copper downlink ports
- Six dual-speed 100GbE (QSFP28)/40GbE (QSFP+) uplink ports
- Up to 1.08/2.16 Tbps (uni/bidirectional) of L2 and L3 performance, with latency as low as 800 nanoseconds
- A 2.2 GHz quad-core Intel CPU with 16 GB memory and 100 GB SSD storage
Using breakout cables, 40GbE QSFP+ ports 50 and 51 can be channelized into four 10GbE SFP+ ports each, increasing the total number of 10GbE ports per switch to 56.
QFX5120-32C
The QFX5120-32C is a compact 100GbE data center leaf-and-spine and campus distribution switch featuring:
- 32 100GbE (QSFP28) or 40GbE (QSFP+) uplink ports
- A 2.2 GHz quad-core Intel CPU with 16 GB memory and 64 GB SSD storage
- Up to 3.2/6.4 Tbps (uni/bidirectional) L2 and L3 performance, with latency as low as 800 nanoseconds
Using breakout cables, 100GbE QSFP28 ports 0-30 can be channelized into four 25GbE SFP28 ports*, and the 40GbE QSFP+ ports 0-30 can be channelized into four 10GbE SFP+ ports, increasing the total number of 25GbE per switch to 124 and the total number of 10GbE ports per switch to 126 (including SFP+ ports 32 and 33). Port 31 does not support 4x10G or 4x25G channelization options. Only 100GbE, 40GbE, and 2x50GbE channelization options are supported on port 31.
In addition, all QFX5120 switch models include:
- Support for VXLAN as an L2 or L3 gateway
- Advanced Junos OS features such as Ethernet VPN-Virtual Extensible LAN (EVPN-VXLAN), BGP add-path, L3 VPN, and MPLS
- Feature-rich automation capabilities with support for Python and zero-touch provisioning (ZTP)
Junos OS
The high-performance QFX5120 Switch runs Junos OS, Juniper’s powerful and robust network operating system that powers all Juniper switches, routers, and firewalls. Key Junos OS features that enhance the functionality and capabilities of the QFX5120 include:
- Software modularity, with process modules running independently in their own protected memory space and with the ability to do process restarts
- Uninterrupted routing and forwarding, with features such as nonstop active routing (NSR) and nonstop bridging (NSB)
- Commit and rollback functionality that ensures error-free network configurations
- A powerful set of scripts for on-box problem detection, reporting, and resolution
Data Center Deployments
Data centers demand high-speed, low-latency, storage- and I/O-converged networking solutions that maximize performance for physical servers, virtual servers, and storage. The QFX5120 Switch addresses these issues with low-latency, lossless, high-density 10GbE, 25GbE, and 100GbE interfaces on a compact 1 U platform. In addition, the QFX5120 offers EVPN-VXLAN L2 and L3 gateway support, making it an ideal solution for either edge routed or centrally routed overlay deployments in the data center. The QFX5120 also supports flexible back-to-front and front-to-back airflow cooling options, ensuring consistency with server designs for hot-aisle or cold-aisle deployments.
Data Center Server Access
The QFX5120-48Y and QFX5120-48YM support tri-speed 1GbE/10GbE/25GbE, making them a perfect fit for top-of-rack deployments. The 48 ports of native 10GbE/25GbE for server connectivity, plus up to eight 40GbE or 100GbE ports for uplink connectivity, provide very low oversubscription of 1.5:1 from access to aggregation.
The QFX5120-48T supports dual-speed 1GbE/10GbE, also making it a perfect fit for top-of-rack deployments. The 48 native 10GbE RJ-45 copper ports for server connectivity, plus up to six 40GbE or 100GbE ports for uplink connectivity, provide an unsubscribed (0.8:1) access-to-aggregation ratio.
The QFX5120-32C can also be used for high-density 25GbE server connectivity, with an option to break out the 100GbE ports into four 25GbE ports.
In Figure 1, the QFX5120 is deployed as a leaf acting as an edge-routed gateway. In this topology, the VXLAN tunnel encapsulation and decapsulation take place on the QFX5120 leaf switches, while Juniper Networks QFX5200-32C or Juniper Networks QFX5210-64C spine switches are used for IP transit. Juniper Networks QFX5110-32Q switches can also be used in the spine to build a 40GbE fabric.
