Juniper QFX5120-48Y-AFO2 | QFX5120 48-Port 25G Switch, 8x 100G QSFP28

Q: What is the difference between the QFX5120-48Y-AFO and AFO2 models?
A: Both models share identical hardware specifications with 48x 25GbE SFP28 ports and 8x 100GbE QSFP28 uplinks. The AFO2 designation indicates this unit ships with redundant AC power supplies and fans with port-side exhaust airflow, suitable for front-to-back cooling designs and hot-aisle containment.

Q: Can the QSFP28 ports be broken out into multiple lower-speed ports?
A: Yes, each 100GbE QSFP28 port can be broken out into 4x25GbE ports using appropriate breakout cables, and each 40GbE QSFP+ configuration can be broken into 4x10GbE ports. This increases the total port count from 48 to 80 ports for 25GbE or 10GbE connectivity.

Q: What are the primary use cases for the QFX5120-48Y-AFO2?
A: The switch is optimized for data center leaf deployments in spine-leaf architectures, high-density 25GbE server access, EVPN-VXLAN overlay networks, virtualized environments, cloud-native workloads, and campus distribution layers requiring high-speed east-west traffic and scalable fabric integration.

Q: Does the QFX5120-48Y support Virtual Chassis technology?
A: Yes, the QFX5120 series supports Virtual Chassis technology, allowing multiple switches to be logically managed as a single device for simplified operations, enhanced redundancy, and streamlined fabric deployment.

Q: What Layer 2 and Layer 3 protocols does this switch support?
A: The QFX5120-48Y-AFO2 supports comprehensive Layer 2 features including VLANs, spanning tree protocols, and EVPN. Layer 3 capabilities include BGP, OSPF, IS-IS, BGP add-path, MPLS, L3 VPN, IPv6 6PE, and VXLAN routing as both L2 and L3 gateway with OVSDB protocol support.