Hardware

Switching Capacity

• QFX5100-24Q: 2.56 Tbps/1.44 Bpps
• QFX5100-24Q-AA: 2.56 Tbps/1.44. Bpps

Weight

• QFX5100-24Q: 21.6 lb (9.8 kg)
• QFX5100-24Q-AA: 21.6 lb (9.8 kg)

Dimensions (HxWxD)

• QFX5100-24Q: 1.72 x17.36 x 20.48 in (4.37 x 44.09 x 52.02 cm)
• QFX5100-24Q-AA: 1.72 x17.36 x 20.48 in (4.37 x 44.09 x 52.02 cm)
• Switching mode: Cut-through and store-and-forward
• Front-to-back or back-to-front airflow (for hot aisle/cold aisle deployment)
• Management and rear console port connections

Power Consumption

• QFX5100-24Q-AFO/AFI: 161 W
• QFX5100-24Q-AA-AFO/AFI: 175 W

Interface Options

• QFX5100-24Q-AFO/AFI:
  • 1GbE SFP: N/A
  • 10GbE SFP: 96/104 (with breakout cable)
  • 40GbE QSFP: 24/32 (with 2 x QFX-EM-4Q)
• QFX5100-24Q-AA-AFO/AFI:
  • 1GbE SFP: N/A
  • 10GbE SFP: 96/104 (with breakout cable)
  • 40GbE QSFP: 24/32 (with 2 x QFX-EM-4Q)
• Each QSFP port can be configured as a 4 x 10GbE interface
• Each QSFP port can be configured as a 40 Gbps port
• USB port
• Console port
• 2 management ports: 1 RJ-45 and 1 SFP
• Supported transceiver and direct attach cable
• SFP 10GbE optical modules
• SFP DAC cables: 1/3/5 m twinax copper and 1/3/5/7/10 m active twinax copper
• SFP GbE optical and copper module
• QSFP to SFP 10GbE direct attach break-out copper (1/3 m twinax copper cable)

Rack Installation Kit

• Versatile four post mounting options for 19-in server rack or datacom rack

Airflow

• Front-to-back and back-to-front cooling
• Redundant variable-speed fans to reduce power draw

Power Supply and Fan Modules

• Dual redundant (11) and hot-pluggable power supplies
• 110-240 V single phase AC power
• -36 to -72 V DC power
• Redundant (N1) and hot-pluggable fan modules for front-to-back and back-to-front airflow

Performance Scale (Unidimensional)

• MAC addresses per system: 288,0003
• VLAN IDs: 4,096
• Number of link aggregation groups (LAGs): 128
• Number of ports per LAG: 32
• Number of FCoE VLANs/FC Virtual Fabrics: 4,095
• Firewall filters: 4000
• IPv4 unicast routes: 128,000 prefixes; 208,000 host routes; 644 ECMP paths
• IPv4 multicast routes: 104,000
• IPv6 multicast routes: 52,000
• IPv6 unicast routes: 64,000 prefixes
• ARP entries: 48,000
• Jumbo frame: 9,216 bytes
• Spanning Tree Protocol (STP)
  • Multiple Spanning Tree Protocol (MSTP) instances: 64
  • VLAN Spanning Tree Protocol (VSTP) instances: 253
• Traffic mirroring
  • Mirroring destination ports per switch: 4
  • Maximum number of mirroring sessions: 4
  • Mirroring destination VLANs per switch: 4

2Measured with 10GbE passive DAC and QSFP passive DAC. 
3MAC address table uses a hash-based scheme to program entries; therefore, some entries may not be programmed due to hash index collision.
4USR optics and QFSP SR4 optics.

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
• MAC address filtering
• Private VLAN (PVLAN)
• QinQ
• 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)
• IEEE 802.1AB Link Layer Discovery Protocol (LLDP)

Link Aggregation

• Multi-chassis link aggregation (MC-LAG)
• Redundant Trunk Group (RTG)
• LAG load sharing algorithm—bridged or routed (unicast or multicast) traffic:
  • IP: 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
  • FCoE packet: Source ID (SID), Destination ID (DID), Originator exchange ID (OXID), source port

Layer 3 Features (IPv4)

• Static routing
• Routing policy
• 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)

Multicast Features

• Internet Group Management Protocol (IGMP): v1, v2 , V3
• IGMP snooping: v1, v2, v3
• IGMP Filter
• PIM-SM
• Multicast Source Discovery Protocol (MSDP)
• 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
• Storm control, port error disable, and autorecovery
• Control plane denial-of-service (DoS) protection
• Dynamic ARP Inspection (DAI)
• Sticky MAC address
• DHCP snooping

Quality of Service (QoS)

• L2 and L3 QoS: Classification, rewrite, queuing
• Rate limiting:
  • Ingress policing: 1 rate 2 color, 2 rate 3 color
  • Egress policing: Policer, policer mark down action
  • Egress shaping: Per queue on each port
• 12 hardware queues per port (8 unicast and 4 multicast)
• Strict priority queuing (LLQ), smoothed 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

Data Center Bridging (DCB)

• Priority-based flow control (PFC)—IEEE 802.1Qbb
• Enhanced Transmission Selection (ETS)—IEEE 802.1Qaz
• Data Center Bridging Exchange Protocol (DCBX), DCBx FCoE, and iSCSI type, length, and value (TLVs)

Fibre Channel over Ethernet (FCoE)

• FCoE transit switch (FIP snooping ACL installation)
• FCoE session path learning
• FCoE session health monitoring
• Graceful restart for FIP snooping
• FC-BB-6 VN2VN snooping

Virtual Chassis

• 40GbE and 10GbE as Virtual Chassis port
• Virtual Chassis Routing Engine (RE) election
• Virtual Chassis pre-provisioning (plug and play)
• Auto-LAG formation of Virtual Chassis ports
• Mixed Virtual Chassis support
• FCoE transit across Virtual Chassis members
• QoS on Virtual Chassis ports
• Local Designated Forwarding
• Graceful RE switchover (GRES)
• Nonstop routing (NSR)
• Nonstop bridging (NSB)
• Monitor distributed aggregate interface
• Control plane protection for virtual RE

High Availability

• Topology-independent in-service software upgrade (TISSU)
• Sub-second Bidirectional Forwarding Detection (BFD)
• Uplink failure detection (UFD)

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 access control list (ACL)/policers
• MPLS LSR support
• IPv6 tunneling (6PE) (via IPv4 MPLS backbone)
• MPLS Operation, Administration, and Maintenance (OAM)—LSP ping
• IPv4 L3 VPN (RFC 2547, 4364

Server Virtualization Management and SDN-Related Protocols

• Junos Space Virtual Control
• VMware NSX VXLAN L2 Gateway
• VXLAN OVSDB
• OpenFlow 1.3 client

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
• High frequency statistics collection
• Beacon LED for port and system
• Automation and orchestration
• Zero-touch provisioning (ZTP)
• OpenStack Neutron Plug-in
• Puppet
• Chef
• Python
• Junos OS event, commit, and OP scripts

Traffic Mirroring

• Port-based
• LAG port
• VLAN-based
• Filter-based
• Mirror to local
• Mirror to remote destinations (L2 over VLAN)