SRX550-645AP-M - Juniper SRX Series Service Gateways Overview
SRX550-645AP-M - Juniper SRX Series Service Gateways is a genuine network security and threat protection product from Juniper, a vendor known for scalable, high-performance networking platforms from the campus edge to the core. Belonging to the Juniper SRX Series family, the SRX550-645AP-M unit is built to the original factory specification, so it integrates with existing Juniper deployments predictably and behaves exactly as the platform documentation describes. In the network, it is deployed as a standalone unit or as part of a larger managed network, following the standard operating procedures of the platform.
From a specification standpoint, 247 W PoE budget. These are the original factory figures for this model, giving administrators a clear picture of what the unit can deliver before it enters service. Standard mounting, cabling and management practices apply, so deployment follows the same procedures as other Juniper hardware already running in the environment.
Typical deployments include perimeter protection with stateful inspection, branch-office security with VPN and threat prevention, and data-center north-south traffic filtering. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “SRX550 Services Gateway with 4G DRAM, 8G CF and 1 AC PSU”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the SRX550-645AP-M. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Enterprise WAN
Branch and campus routing with advanced services.
Service Provider
Edge routing for ISP and MPLS deployments.
Data Center
Interconnect core and aggregation layers reliably.
Buying a Pre-Owned SRX550-645AP-M
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
SRX550-645AP-M Specification | |
Description | SRX550 Services Gateway with 4 GB DRAM and 8 GB CF, 2 RU height, 6 GPIM slots, 2 Mini-PIM slots, 6 10/100/1000BASE-T ports, 4GbE SFP ports, dual PS slots, fans; ships with one 645 watt AC power supply with 247 W PoE power (power cord and rack-mount kit included) |
Junos OS software version tested | Junos OS 12.1 |
Firewall performance (max) | 5.5 Gbps |
IPS performance | 800 Mbps |
AES256+SHA-1 / 3DES+SHA-1 VPN performance | 1.0 Gbps |
Maximum concurrent sessions | 375,000 |
New sessions/second (sustained, TCP, 3-way) | 27,000 |
Maximum security policies | 7256 |
Maximum security intelligence data feed entries in firewall rules database | 600,000 IP addresses and 50,000 URLs |
Fixed I/O | 6 x 10/100/1000 BASE-T + 4 SFP |
I/O slots | 2 x SRX Series Mini-PIM, 6 x GPIM or multiple GPIM and XPIM combinations |
Services and Routing Engine slots | No |
Maximum number of PoE ports (PoE optional on some SRX Series models | Up to 40 ports of 802.3af/at with maximum 247 W |
USB | 2 |
Routing (Packet Mode) PPS | 1000 Kpps |
Concurrent VPN tunnels | 2,000 |
Memory (DRAM) | 2 GB/4 GB |
Memory slots | 2 DIMM |
Flash memory | 2 GB/8 GB CF internal |
USB port for external storage | Yes |
Dimensions (W x H x D) | 17.5 x 3.5 x 18.2 in (44.4 x 8.8 x 46.2 cm) |
Rack-mountable | Yes, 2 RU |
Power supply (AC) | 100–240 VAC, single 645 W or dual 645 W |
Maximum PoE power | 247 W redundant, or 494 W nonredundant |
Average power consumption | 85 W |
Average heat dissipation | 238 BTU/hr |
Redundant power supply (hot swappable) | Yes (up to maximum capacity of single PSU) |
Operational temperature | 32° to 104° F (0° to 40°C) |
SRX550-645AP-M - Deployment Notes
This SRX550-645AP-M security appliance is positioned for the throughput and VPN requirements of its specific SKU tier. Confirm the firewall throughput, VPN tunnel capacity, and interface configuration of this variant against your expected traffic profile before ordering.
For refresh or migration projects, verify the software version and license entitlements applicable to this unit. Our team can confirm the installed software and hardware revision before dispatch.
Every SRX550-645AP-M unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including interface status, console access and firmware state.
SRX550-645AP-M - Juniper Series Notes
This listing is part of the Juniper enterprise networking product family, sourced and tested by LinkNewNet for enterprise deployment. Juniper SRX firewall provides stateful inspection, VPN termination, and threat defense at the network perimeter. It is commonly deployed in internet-edge, site-to-site, and remote-access roles.
Deployment guidance: When planning this SRX550-645AP-M unit into a network, confirm the Junos OS version required, the power and cooling profile, and the upstream/downstream interface types that match your existing infrastructure. For a like-for-like refresh, match the feature set of the units already in service so management and automation behave consistently.
Our Juniper reconditioning process: Every pre-owned Juniper unit at LinkNewNet passes a documented reconditioning flow before dispatch - visual inspection, internal cleaning, firmware verification, port-by-port testing, and configuration reset to factory defaults. This ensures the unit you receive operates reliably and integrates cleanly with your existing Juniper management tools.
Related models in this family: EX8200-8XS, EX8208-SRE320, EX8208, EX4500-40F-VC1-BF, EX4200-48T. Compare specifications to confirm the right port density, feature set and uplink options for your deployment.
