Data Sheet EX9250 ETHERNET SWITCH DATASHEET Product Description The Juniper Networks® EX9250 line of compact, programmable, and scalable Ethernet switches is ideal for aggregating access switches such as Juniper Networks EX2300, EX3400, EX4300, and EX4600 Ethernet Switches deployed in campus wiring closets and in on-premises data centers. Product Overview The EX9250 line of Ethernet switches provides compact, programmable, and scalable core and aggregation devices for enterprise environments, reducing cost and complexity while offering carrier-class reliability. The EX9250 Ethernet switches dramatically simplify campus and data center architectures by enabling Evolved Enterprise Core deployments with Ethernet VPN, creating a path to a 100GbE core. The EX9250 is also a key component of Juniper’s AI-Driven Enterprise. The switch decouples the overlay network from the underlay with technologies such as Ethernet VPN (EVPN) and Virtual Extensible LAN (VXLAN), addressing the needs of the modern enterprise network by allowing network administrators to create logical L2 networks over different L3 networks. Two EX9250 chassis options are available, providing considerable deployment flexibility: • EX9251 Ethernet Switch is a fixed-configuration 1 U chassis that supports 8-port 1GbE/10GbE and 4-port 40GbE/100GbE. • EX9253 Ethernet Switch is a two-slot modular 3 U chassis that supports any combination of the following line cards: - EX9253-6Q12C, a 12-port QSFP28 40GbE/100GbE and 6-port QSFP+ 40GbE line card - EX9253-6Q12C-M, a 12-port QSFP28 40GbE/100GbE and 6-port QSFP+ 40GbE line card with Media Access Control Security (MACsec) support Fully configured, a single EX9253 chassis can support up to 144 10GbE ports (all at wire speed), delivering one of the industry’s densest line-rate 10GbE port densities for this class of feature-rich and programmable switch. The EX9253 switch is capable of delivering up to 2.4 Tbps per slot. Custom Silicon The EX9250 switches are based on Juniper One custom silicon, an ASIC designed by Juniper that provides a programmable Packet Forwarding Engine (PFE) and natively supports networking protocols such as virtualization using MPLS over IP and overlay network protocols. ASIC micro code changes, delivered through updates to Juniper Networks Junos® operating system, protect investments by allowing existing hardware to support new or future networking protocols. As a key component of Juniper’s Cloud-Enabled Enterprise architecture, EX9250 switches provide a simple, open, and smart approach to building enterprise networks. The EX9250 switches support Junos Fusion Enterprise technology, which enables a large number of devices deployed throughout a building to be managed as a single logical device. The EX9250 switches also support Data Center Interconnect (DCI), critical to workload mobility and application availability, by delivering leading technologies such as MPLS, virtual private LAN service (VPLS), and

EX9250 Ethernet Switch Datasheet EX9250 switches offer Evolved Enterprise Core capabilities that allow the creation of larger networks supporting both Layer 2 and Layer 3 application traffic. An Evolved Enterprise Core is enabled by combining technologies such as EVPN and VXLAN. EVPN uses control plane-based learning to ensure efficient network utilization and natively supports active/active multihoming. VXLAN overlay with EVPN allows L2 connectivity across the network while providing active/active redundancy, aliasing, and mass media access control (MAC) withdrawal. In an Evolved Enterprise...

EX9250 Ethernet Switch Datasheet Up to 1 million MAC addresses Up to 512,000 Address Resolution Protocol (ARP) entries with mid-scale (ML) license (256,000 entries without ML license) Up to 512,000 forwarding information base (FIB) entries with ML license (256,000 entries without ML license) Jumbo frames (9192 bytes maximum) 32,000 VLANs VLAN Registration Protocol 802.3ad—Link Aggregation Control Protocol (LACP) 802.1D—Spanning Tree Protocol (STP) 802.1w—Rapid Spanning Tree Protocol (RSTP) 802.1s—Multiple Spanning Tree Protocol (MSTP) VLAN Spanning Tree Protocol (VSTP) Layer 2 Protocol Tunneling...

EX9250 Ethernet Switch Datasheet Figure 1: EX9250 as distribution and core in EVPN multihoming and campus fabric architectures. Campus fabric architectures let you manage your campus and data center as a single IP fabric, with over-the-top (OTT) policy and control provided by Juniper. Any number of switches can be connected in a Clos network or IP fabric; EVPN-VLAN extends the fabric and connects multiple enterprise buildings while VXLAN stretches L2 across the network. An IP Clos network between the distribution and core layers can exist in two modes: centrally routed bridging overlay or edge-routed...

EX9250 Ethernet Switch Datasheet • The EX9253 supports control and management plane functionality with an integrated RE that features an 8-core, 1.6 GHz Intel processor with 64 gigabytes of DRAM and dual front-pluggable SSDs, each providing 100 GB of storage for Junos OS images and logs. Dedicated hardware on the RE supports chassis management functions such as environmental monitoring. Communication between the RE modules and individual line cards takes place over a dedicated internal GbE out-of-band control interface. Both the EX9251 and EX9253 feature AUX, console, and Ethernet ports on the...

EX9250 Ethernet Switch Datasheet Figure 2: EX9250 collapses layers in campus, data center, and combined campus and data center environments. These attributes are fundamental to the core value of the software, enabling all Junos OS-powered products to be updated simultaneously with the same software release. All features are fully regression tested, making each new release a true superset of the previous version; customers can deploy the software with complete confidence that all existing capabilities will be maintained and operate in the same way. Simplified Management and Operations A range...