Data Sheet QFX5120 ETHERNET SWITCH ... - Juniper Networks

1 QFX5120 ETHERNET SWITCHP roduct DescriptionThe Juniper Networks QFX5120 SWITCH delivers high scale, high availability, and highperformance for data center and campus deployments. The QFX5120 SWITCH is a versatilerouting and switching platform addressing higher server access speed and campusdistribution use cases while offering high-density 1 GbE/10 GbE/25 GbE and 100 GbEuplinks for collapsed spine data center or campus distribution OptionsThe QFX5120 SWITCH includes four compact 1 U platforms the QFX5120 -48Y, theQFX5120-48YM, the QFX5120 -48T, and the QFX5120 -32C that provide wire-speedpacket performance, very low latency, and a rich set of Junos operating system QFX5120 -48Y is a 25 GbE/100 GbE data center leaf and campus distribution switchfeaturing: 48 25 GbE (SFP28)/10 GbE (SFP+)/1 GbE (SFP) downlink ports Eight 100 GbE (QSFP28)/40 GbE (QSFP+) uplink ports Up to 4 Tbps L2 and L3 performance (bidirectional), with latency as low as 550nanoseconds A GHz quad-core Intel CPU with 16 GB memory and 50 GB SSD storageUsing breakout cables, each of the eight 100 GbE QSFP28 ports can be broken into four25 GbE SFP28 ports, while each 40 GbE quad small form-factor pluggable plus (QSFP+)transceiver ports can be broken into four 10 GbE small form-factor pluggable plus (SFP+)transceiver ports, increasing the total number of supported 25 GbE and 10 GbE ports perswitch to QFX5120 -48YM is a 10 GbE/25 GbE/100 GbE data center leaf and campus distributionswitch featuring.

2 48 25 GbE (SFP28)/10 GbE (SFP+)/1 GbE (SFP) downlink ports Eight 100 GbE (QSFP28)/40 GbE (QSFP+) uplink ports Up to 4 Tbps L2 and L3 performance (bidirectional), with latency as low as 550nanoseconds Media Access Control Security (MACsec) AES-256 support across all ports A GHz quad-core Intel CPU with 16 GB memory and 100 GB SSD storageWhen using breakout cables, two of the 100 GbE QSFP28 ports (ports 50 and 52) can bebroken into four 25 GbE SFP28 or four 10 GbE SFP+ ports, increasing the maximum numberof 10 GbE/25 GbE ports supported to 56. When using breakouts, the total number of allports on the SWITCH , including 6x100 GbE ports and 56x10/25 GbE, is Sheet 1 Product OverviewThe QFX5120 SWITCH deliversrich, low latency Layer 2/Layer3 features and advanced EVPN-VXLAN capabilities, making it anideal data center top-of-rackand distribution SWITCH forcampus enterprise L3 gatewaycapabilities for routing betweenvirtualized and bare-metalservers, the QFX5120 isdesigned for extremely agiledata centers that requiresupport for overlay/underlaynetwork architectures.

3 Native25 GbE with 100 GbE uplinkports on the QFX5120 -48Y andQFX5120-48YM, 10 GbE/1 GbEcopper with 100 GbE uplinkports on the QFX5120 -48T,and 32 100 GbE ports on theQFX5120-32C make theQFX5120 family ideal for spine-and-leaf network QFX5120 -48T is a 10 GbE/100 GbE data center leaf andcampus distribution SWITCH featuring: 48 dual-speed 1 GbE/10 GbE RJ-45 copper downlink ports Six dual-speed 100 GbE (QSFP28)/40 GbE (QSFP+) uplink ports Up to Tbps L2 and L3 performance (bidirectional), withlatency as low as 550 nanoseconds A GHz quad-core Intel CPU with 16 GB memory and 100GB SSD storageUsing breakout cables, each 100 GbE QSFP28 port can be brokeninto four 25 GbE SFP28 ports, while each 40 GbE QSFP+ port canbe broken into four 10 GbE SFP+ ports, increasing the total numberof 25 GbE and 10 GbE ports per SWITCH to QFX5120 -32C is a compact 100 GbE data center leaf-and-spine and campus distribution SWITCH featuring: 32 100 GbE (QSFP28) or 40 GbE (QSFP+) uplink ports A GHz quad-core Intel CPU with 16 GB memory and 64GB SSD storage Up to Tbps L2 and L3 performance (bidirectional), withlatency as low as 550 nanosecondsUsing breakout cables, each 100 GbE QSFP28 port can be brokeninto four 25 GbE SFP28 ports and each 40 GbE QSFP+ port can bebroken into four 10 GbE SFP+ ports, increasing the total number of25 GbE and 10 GbE ports per SWITCH to addition, all QFX5120 SWITCH models include: Support for VXLAN as an L2 or L3 gateway Advanced Junos OS features such as ETHERNET VPN-VirtualExtensible LAN (EVPN-VXLAN), BGP add-path, L3 VPN, andMPLS Feature-rich automation capabilities with support for Pythonand zero-touch provisioning (ZTP)Junos OSThe high-performance QFX5120 SWITCH runs Junos OS, Juniper spowerful and robust network operating system that powers allJuniper switches, routers, and firewalls.

4 Key Junos OS features thatenhance the functionality and capabilities of the QFX5120 include: Software modularity, with process modules runningindependently in their own protected memory space and withthe ability to do process restarts Uninterrupted routing and forwarding, with features such asnonstop active routing (NSR) and nonstop bridging (NSB) Commit and rollback functionality that ensures error-freenetwork configurations A powerful set of scripts for on-box problem detection,reporting, and resolutionData Center DeploymentsData centers demand high-speed, low-latency, storage- and I/O-converged networking solutions that maximize performance forphysical servers, virtual servers, and storage. The QFX5120 Switchaddresses these issues with low-latency, lossless, high-density10 GbE, 25 GbE, and 100 GbE interfaces on a compact 1 U addition, the QFX5120 offers EVPN-VXLAN L2 and L3 gatewaysupport, making it an ideal solution for either edge routed orcentrally routed overlay deployments in the data center.

5 TheQFX5120 also supports flexible back-to-front and front-to-backairflow cooling options, ensuring consistency with server designsfor hot-aisle or cold-aisle Center Server AccessThe QFX5120 -48Y and QFX5120 -48YM support tri-speed 1 GbE/10 GbE/25 GbE, making them a perfect fit for top-of-rackdeployments. The 48 ports of native 10 GbE/25 GbE for serverconnectivity, plus up to eight 40 GbE or 100 GbE ports for uplinkconnectivity, provide very low oversubscription of :1 fromaccess to QFX5120 -48T supports dual-speed 1 GbE/10 GbE, also makingit a perfect fit for top-of-rack deployments. The 48 native 10 GbERJ-45 copper ports for server connectivity, plus up to six 40 GbE or100 GbE ports for uplink connectivity, provide an unsubscribed( :1) access-to-aggregation QFX5120 -32C can also be used for high-density 25 GbE serverconnectivity, with an option to break out the 100 GbE ports intofour 25 GbE Figure 1, the QFX5120 is deployed as a leaf acting as an edge-routed gateway.

6 In this topology, the VXLAN tunnel encapsulationand decapsulation take place on the QFX5120 leaf switches, whileJuniper Networks QFX5200-32C or Juniper NetworksQFX5210-64C spine switches are used for IP transit. JuniperNetworks QFX5110-32Q switches can also be used in the spine tobuild a 40 GbE fabric. QFX5120 ETHERNET Switch2 Figure 1: Edge-routed bridging at the leaf with QFX5200-32C/QFX5210-64C as spineswitchesIn Figure 2, the QFX5120 -48YM leaf and Juniper NetworksQFX10008 SWITCH spine are deployed as EVPN-VXLAN switchesacting as centrally routed gateways or distributed edge-routedgateways. If centrally routed bridging is used, the VXLAN tunnelencapsulation and decapsulation occur on the spine switches forinter-IRB (integrated routing and bridging) symmetric routingpurposes. If edge-routed bridging is used, the IP first hop gatewaysare distributed at the leaf-level QFX5120 -48YM switches usingType 5 symmetric inter-IRB routing. When using a QFX10000-30C-M MACsec line card installed in a spine QFX10008 SWITCH workingwith a leaf QFX5120 -48YM SWITCH , the leaf-to-spine architectureoffers end-to-end MACsec AES-256 2: QFX5120 -48T and QFX5120 -48Y/48YM in a leaf-and-spine deploymentData Center SpineThe QFX5120 -32C, with 32 ports of 100 GbE, can serve as thespine in small to medium-sized enterprise data centers.

7 TheQFX5120-32C can be deployed in a three-stage IP Clos withEVPN-VXLAN overlay to support as many as 1500 server accessports. The QFX5120 -48Y/ QFX5120 -48YM and QFX5120 -32C canalso be used as a collapsed spine data center deployment, offeringEthernet segment identifier-link aggregation group (ESI-LAG)connectivity to the rest of the network infrastructure QFX5120 switches can operate in both cut-through and store-and-forward modes, delivering sustained wire-speed switching withsub-microsecond latency and low jitter for any packet size(including jumbo frames) in either mode. With features such asmultichassis link aggregation (MC-LAG), the QFX5120 supportsactive/active server dual-homing and can use full bisectionalbandwidth from server to with Junos OS, the QFX5120 supports the mostadvanced and robust routing capabilities in the industry, OSPF forboth IPv4 and IPv6, as well as advanced routing capabilities such asIS-IS and BGP. With additional capabilities such as 64-way equal-cost multipath (ECMP) and BGP add path, the QFX5120 is an idealbuilding block for deploying the most robust L3 underlay for ETHERNET Switch3 Campus DeploymentsJuniper campus fabrics provide a single, standards-based EthernetVPN-Virtual Extensible LAN (EVPN-VXLAN)

8 Solution that can bedeployed in any campus, whether a two-tier network with acollapsed core distribution or a campus-wide system that involvesmultiple buildings with separate distribution and core QFX5120 -48Y and QFX5120 -48YM are ideal as campusdistribution switches with 10 GbE/25 GbE downlinks and 40 GbE/100 GbE uplinks supporting technologies like MC-LAG and QFX5120 -32C is ideal as a campus core SWITCH with 32 portsof 100 GbE and support for technologies like campus fabric QFX5120 -48T supports dual-speed 1 GbE/10 GbE, also makingit a perfect fit for top-of-rack deployments in campus environmentsfor server campus fabrics support the following validatedarchitectures: MC-LAG and EVPN Multihoming (Collapsed Core/Distribution): A pair of interconnected QFX5120 switches canbe deployed to provide EVPN multihoming (ESI-LAG) ormultichassis link aggregation (MC-LAG) in a collapsed core/distribution configuration. This eliminates the need forSpanning Tree Protocol (STP) across the campus network byproviding multihoming capabilities from the access to thedistribution layer, while distribution to the core is an L3 IPfabric.

9 ESI-LAG also supports horizontal scaling with more thantwo devices in the distribution layer and can extend EVPN tothe core. Campus Fabric Core-Distribution: A pair of interconnectedQFX5120 switches can provide EVPN L2 and L3 VXLAN gateway support. This eliminates the need for STP across thecampus network by providing a multihoming capability fromthe access to the distribution layer, while distribution to thecore is an L3 IP fabric using EVPN technology. The IP fabriccan also extend to connect multiple enterprise buildings, whileVXLAN allows stretching of L2 across buildings. An IP Closnetwork between the distribution and the core layers can existin two modes, both of which are supported by the QFX5120 :-Centrally routed bridging overlay: An IRB interfaceplaced at a central location in the fabric (in this case, acore device)-Edge routed bridging overlay: An IRB interface placed atthe edge of the fabric (in this case, a distribution device) Campus Fabric IP Clos: The Campus Fabric IP Closarchitecture pushes VXLAN Layer 2/3 gateway functionality tothe access layer.

10 In this architecture, the QFX5120 SWITCH actsas an IP fabric distribution 3: QFX5120 as distribution and core in EVPN multihoming and campus fabric architecturesQFX5120 ETHERNET Switch4 Features and Benefits Automation: The QFX5120 supports a number of networkautomation and plug-and-play operational features, includingZTP and event scripts, automatic rollback, and Pythonscripting. Flexible forwarding table: The QFX5120 includes a unifiedforwarding table, which allows the hardware table to be carvedinto configurable partitions of L2 media access control (MAC),L3 host, and longest prefix match (LPM) tables. In a pure L2environment, the QFX5120 supports 288,000 MACaddresses. In L3 mode, the table can support 208,000 hostentries. In LPM mode, it can support 351,000 prefixes. JunosOS provides configurable options through a CLI that canoptimize the QFX5120 for various deployment scenarios. Intelligent buffer management: The QFX5120 features a totalof 32 MB of shared buffers.