Juniper QFX5120-32C-DC-AFO Switch

Juniper QFX5120-32C-DC-AFO Switch

Juniper QFX5120-32C-DC-AFO is a compact 1U data center Ethernet switch built for high-density 100GbE deployments in spine, leaf, and aggregation environments. It delivers 32 x 100GbE QSFP28 ports with breakout support for 10GbE and 25GbE connectivity, making it suitable for scalable fabric designs and migration to higher-speed architectures. With DC power input, front-to-back airflow for hot aisle deployment, and redundant power and fan modules, this model is designed for reliable operation in demanding data center installations.

Properties	Juniper QFX5120-32C-DC-AFO
Description	QFX5120-32C, 32 x 100GbE QSFP28, 1U, DC power, front-to-back airflow
Product Family	QFX5120 Series
Product Type	Ethernet Switch
Dimensions (HxWxD) Inches	1.7 x 17.26 x 20.27 in. (4.32 x 43.84 x 51.5 cm)
Rack Units	1 U
Weight	21.12 lb (9.58 kg)
Power Consumption	Max load: 310 W, Typical load: 291 W
Interface Options
10GbE	2 native ports plus 124 with 4 x 10GbE breakout cable
25GbE	124 with breakout cable
40GbE QSFP+	32 (ports 0-31 can be configured as 4 x 10GbE interfaces)
100GbE QSFP28	32 (ports 0-31 can be configured as 4 x 25GbE interfaces)
Management and Console	1 x RJ-45 in-band management port, 1 x USB 2.0 port, 1 x RS-232 console port
Supported Optics and Cables	SFP+ 10GbE optical modules; SFP+ DAC cables: 1/3/5 m twinax copper and 1/3/5/7 m active twinax copper; SFP28 DAC cables: 1/3 m twinax copper; SFP28 optics: SR, LR; QSFP+ to SFP+ 10GbE direct attach breakout copper (1/3 m twinax copper cable); QSFP+ DAC cables: 1/3 m twinax copper; QSFP+ optics: SR4, LX4, ESR4, ER4, LR4; QSFP28 optics: SR4, ER4, PSM4, CWDM4, LR4
Rack Installation Kit	Versatile four-post mounting options for 19-in server rack or datacom rack
Airflow	Front-to-back (airflow out) for hot aisle deployment; redundant (N+1) and hot-pluggable fan modules for front-to-back airflow; redundant variable-speed fans to reduce power draw
Power Supply and Fan Modules	Dual redundant (1+1) and hot-pluggable 650 W AC/DC power supplies; 100-240 V single phase AC power; -48 to -60 V DC power supply; redundant 5+1 and hot-pluggable fan modules for front-to-back airflow

Specifications	QFX5120-32C-DC-AFO
CPU	2.2 GHz quad-core Intel CPU
Memory	16 GB
Storage	64 GB SSD
Switching Capacity	6.4 Tbps (bidirectional) / 2 Bpps
Switching Mode	Cut-through and store-and-forward
Total Packet Buffer	16 MB
MAC Addresses per System	288,000
VLAN IDs	4,093
Number of Link Aggregation Groups (LAGs)	80
Number of Ports per LAG	64
IPv4 Unicast Routes	351,000 prefixes; 208,000 host routes; 64 ECMP paths
IPv4 Multicast Routes	104,000
IPv6 Multicast Routes	52,000
IPv6 Unicast Routes	168,000 prefixes; 104,000 host routes
Address Resolution Protocol (ARP) Entries	64,000
Jumbo Frame	9,216 bytes
Spanning Tree Protocol (STP)	Multiple Spanning Tree Protocol (MSTP) instances: 64 VLAN Spanning Tree Protocol (VSTP) instances: 509
Traffic Mirroring	Mirroring destination ports per switch: 4 Maximum number of mirroring sessions: 4 Mirroring destination VLANs per switch: 4
Software Specifications
Layer 2 Features	STP—IEEE 802.1D (802.1D-2004) Rapid Spanning Tree Protocol (RSTP) (IEEE 802.1w); MSTP (IEEE 802.1s) Bridge protocol data unit (BPDU) protect Loop protect Root protect RSTP and VSTP running concurrently VLAN—IEEE 802.1Q VLAN trunking Routed VLAN interface (RVI) Port-based VLAN Private VLAN (PVLAN) VLAN translation Static MAC address assignment for interface Per VLAN MAC learning (limit) MAC learning disable Link Aggregation and Link Aggregation Control Protocol (LACP) (IEEE 802.3ad) MACsec with AES256 (QFX5120-48YM only) Virtual chassis—up to 2 members on QFX5120-48Y, QFX5120-32C and QFX5120-48T
Layer 3 Features (IPv4)	Static routing Routing protocols (RIP, OSPF, IS-IS, BGP) Virtual Router Redundancy Protocol (VRRP) Virtual router Dynamic Host Configuration Protocol (DHCP) relay Proxy Address Resolution Protocol (ARP)
EVPN-VXLAN Features	MAC virtual routing and forwarding (MAC-VRF) multiple EVPN instances (EVI) with service-types vlan-based, vlan-aware, vlan-bundle Symmetric inter-IRB routing with anycast gateway and EVPN type-5 instances Proxy IGMPv2—EVPN route types 6/7/8 ARP/ND proxy/suppression ESI-LAG A/A multihoming using Enterprise and SP-style interfaces Enhanced Ethernet loop detection Filter-based forwarding on IRB.VGA EVPN advanced route policing VLAN-id overlapping using SP-style interfaces VLAN rewrite support in EVPN-VXLAN enterprise-style (EP-style) interfaces – vlan-id overlap in EP-style interfaces OISM - draft-ietf-bess-evpn-irb-mcast
Multicast Features	Internet Group Management Protocol (IGMP): v1, v2, v3 IGMP snooping: v1, v2, and v3 (Layer 2 only) IGMP filter Protocol Independent Multicast-Sparse Mode (PIM-SM), PIM-Source-Specific Multicast (PIM-SSM), PIM-Dense Mode (PIM-DM) in pure IP fabric use case Multicast Source Discovery Protocol (MSDP)
Link Aggregation	MC-LAG LAG load sharing algorithm—bridged or routed (unicast or multicast) traffic IP: Session Initiation Protocol (SIP), Dynamic Internet Protocol (DIP), TCP/UDP source port, TCP/UDP destination port Layer 2 and non-IP: MAC SA, MAC DA, Ethertype, VLAN ID, source port
Quality of Service (QoS)	L2 and L3 QoS: Classification, rewrite, queuing Rate limiting Ingress policing: Single-rate two-color policer, two-rate three-color policer Egress policing: Policer, policer mark down action Egress shaping: Per queue on each port 10 hardware queues per port (8 unicast and 2 multicast) Strict-priority queue (SPQ), shaped-deficit weighted round-robin (SDWRR), weighted random early detection (WRED), weighted tail drop 802.1p remarking Layer 2 classification criteria: Interface, MAC address, Ethertype, 802.1p, VLAN Congestion avoidance capabilities: WRED Trust IEEE 802.1p (ingress) Remarking of bridged packets Default inner to outer DiffServ code point (DSCP) copy for EVPN-VXLAN
Security and Filters	Secure interface login and password RADIUS TACACS+ Ingress and egress filters: Allow and deny, port filters, VLAN filters, and routed filters, including management port filters Filter actions: Logging, system logging, reject, mirror to an interface, counters, assign forwarding class, permit, drop, police, mark SSH v1, v2 Static ARP support in pure IP fabric Storm control, port error disable, and autorecovery Source MAC address filtering on the port DHCP snooping in pure IP fabric use case
IP Storage	Priority-based flow control (PFC)—IEEE 802.1Qbb, DCBX PFC using DSCP and explicit congestion notification (ECN) for ROCEv2
High Availability	Bidirectional Forwarding Detection (BFD) Uplink failure detection
MPLS	Static label-switched paths (LSPs) RSVP-based signaling of LSPs LDP-based signaling of LSPs LDP tunneling (LDP over RSVP) MPLS class of service (CoS) MPLS LSR support IPv6 tunneling (6PE) (via IPv4 MPLS backbone) IPv4 L3 VPN (RFC 2547, RFC 4364)
Management and Analytics Platforms	Juniper Apstra for Data Center Juniper Mist Wired Assurance for Campus Junos Space Network Director for Campus Paragon Insights
Traffic Mirroring	Port-based LAG port VLAN-based Filter-based Mirror to local Mirror to remote destinations (L2 over VLAN)
Device Management and Operations	Role-based CLI management and access CLI via console, telnet, or SSH Extended ping and traceroute Junos OS configuration rescue and rollback Image rollback SNMP v1/v2/v3 Junos XML management protocol sFlow v5 Beacon LED for port and system Inband Flow Analyzer (IFA) ZTP OpenStack Neutron Plug-in Python Junos OS event, commit, and OP scripts Junos Telemetry Interface
Operating Temperature	32° to 104° F (0° to 40° C)
Storage Temperature	-40° to 158° F (-40° to 70° C)
Operating Altitude	Up to 6000 ft (1829 m)
Relative Humidity Operating	5% to 90% (noncondensing)
Relative Humidity Non-operating	0% to 95% (noncondensing)
IEEE Standards	IEEE 802.1D IEEE 802.1w IEEE 802.1 IEEE 802.1Q IEEE 802.1p IEEE 802.1ad IEEE 802.3ad IEEE 802.1AB IEEE 802.3x IEEE 802.1Qbb IEEE 802.1Qaz
T11 Standards	INCITS T11 FC-BB-5

Accessories
QFX520048Y-DPSU-AO	DC power supply unit, front-to-back airflow for QFX5120-32C-DC-AFO
QFX520048Y-FAN-AO	Front-to-back airflow fan model for QFX5120-32C models
QFX512032C-RMK	4-post rack mount kit for QFX5120-32C models
QFX5K-2PST-RMK	2-post rack mount kit for QFX5120-32C models
MACsec Encryption
S-QFX5KC1-MACSEC-1	Class C1 QFX5000, MACsec AES 256 Encryption Sub Software, Term: 1 Yr
S-QFX5KC1-MACSEC-3	Class C1 QFX5000, MACsec AES 256 Encryption Sub Software, Term: 3 Yrs
S-QFX5KC1-MACSEC-5	Class C1 QFX5000, MACsec AES 256 Encryption Sub Software, Term: 5 Yrs
S-QFX5KC1-MACSEC-P	Class C1 QFX5000, MACsec AES 256 Encryption Software, Perpetual
Flex Software
S-QFX5K-C1-A1-3	Flex Sub Software, Class 1 QFX5000 line, Adv 1, Term: 3 Yrs
S-QFX5K-C1-A1-5	Flex Sub Software, Class 1 QFX5000 line, Adv 1, Term: 5 Yrs
S-QFX5K-C1-A1-P	Flex Software, Class 1 QFX5000 line, Adv 1, Perpetual
S-QFX5K-C1-A2-3	Flex Sub Software, Class 1 QFX5000 line, Adv 2, Term: 3 Yrs
S-QFX5K-C1-A2-5	Flex Sub Software, Class 1 QFX5000 line, Adv 2, Term: 5 Yrs
S-QFX5K-C1-A2-P	Flex Software, Class 1 QFX5000 line, Adv 2, Perpetual
S-QFX5K-C1-P1-3	Flex Sub Software, Class 1 QFX5000 line, Prem 1, Term: 3 Yrs
S-QFX5K-C1-P1-5	Flex Sub Software, Class 1 QFX5000 line, Prem 1, Term: 5 Yrs
S-QFX5K-C1-P1-P	Flex Software, Class 1 QFX5000 line, Prem 1, Perpetual
S-QFX5K-C2-A1-3	Flex Sub Software, Class 2 QFX5000 line, Adv 1, Term: 3 Yrs
S-QFX5K-C2-A1-5	Flex Sub Software, Class 2 QFX5000 line, Adv 1, Term: 5 Yrs
S-QFX5K-C2-A1-P	Flex Software, Class 2 QFX5000 line, Adv 1, Perpetual
S-QFX5K-C2-A2-3	Flex Sub Software, Class 2 QFX5000 line, Adv 2, Term: 3 Yrs
S-QFX5K-C2-A2-5	Flex Sub Software, Class 2 QFX5000 line, Adv 2, Term: 5 Yrs
S-QFX5K-C2-A2-P	Flex Software, Class 2 QFX5000 line, Adv 2, Perpetual
S-QFX5K-C2-P1-3	Flex Sub Software, Class 2 QFX5000 line, Prem 1, Term: 3 Yrs

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