Juniper EX9253 line delivers a number of common architectural elements across its campus distribution and core Ethernet switches. The REs employed by these switches run Junos OS, which processes all L2 and L3 protocols and manages the chassis. The EX9251 switch and the EX9253 line cards include Packet Forwarding Engines (PFEs) that process network traffic. Juniper EX9253 is designed for small enterprise campus deployments. The switch’s shallow depth makes it ideal for wiring closets and distribution facilities. To maintain uninterrupted operation, redundant variable-speed fans cool the system, as well as the RE and PFE. Redundant hot-swappable power supplies convert building power to the internal voltage required by the system. Juniper EX9253 is designed for medium-sized enterprises, with efficient multicast replication handling and deep buffering to ensure performance at scale. To maintain uninterrupted operation, trays with redundant, variable-speed fans cool the line cards, RE, and PFE. Juniper EX9253 power supplies convert building power to the internal voltage required by the system. All EX9253 components are hot-swappable, and all central functions are available in redundant configurations, providing high operational availability and ensuring continuous system operation during maintenance or repairs.

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Switch
Security	Ingress and egress L2-L4 access control lists (ACLs): Port ACLs, VLAN ACLs, Router ACLs Control plane denial-of-service (DoS) protection
VLAN	32,000 VLANs
Manageable	Yes
Layer 2 switching	Yes, 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 (L2PT)
Layer 3 Switching	Yes, Static routing, RIP v1/v2, OSPF v1/v2 OSPF v3, Filter-based forwarding, Virtual Router Redundancy Protocol (VRRP)
Number of Port	12x QSFP28 40GbE/100GbE + 6x QSFP+ 40GbE
Stackable	N/A
Redundant Power Supply	Yes, 6 power supplies
Rackmount	Yes
Warranty	Juniper Indonesia Enhanced Limited Lifetime Warranty

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