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Extreme ExtremeRouting SLX 9640 Routers - Refurbished, Used, New
Extreme ExtremeRouting SLX 9640 routers are compact 1RU edge and border routers for enterprise WAN, service provider edge, internet peering and data center interconnect. The SLX 9640-24S combines 24 SFP+ ports for 1G and 10G with QSFP28 ports for 100G, and its routing table scale is sized for carrying full internet routes, which is what separates it from the SLX switches that share its form factor. It runs Extreme's SLX-OS with BGP, MPLS, segment routing, VXLAN and streaming telemetry. NetworkTigers sells SLX 9640 chassis, power supplies and fan modules refurbished, used and new. Every unit is tested before it ships so it works when it arrives.
SLX 9640 models and parts
| Model or part | Used for | Shop |
|---|---|---|
| EN-SLX-9640-24S | Base chassis, 24x 10G SFP+ and 100G QSFP28 ports, supplied without fans and power supplies unless the listing says otherwise | EN-SLX-9640-24S |
| EN-SLX-9640-24S-AC-F | Same chassis bundled with AC power supplies and front-to-back airflow fans | EN-SLX-9640-24S-AC-F |
| Airflow variants | The suffix gives power (AC or DC) and airflow (F front-to-back, R back-to-front); choose by which side of the rack supplies cold air | All SLX 9640 listings |
| Power supplies | Hot-swappable AC or DC supplies, two per chassis for redundancy, in the airflow direction of the router | SLX 9640 power |
| Fan modules | Hot-swappable fan trays, front-to-back or back-to-front, needed to complete a bare chassis | SLX 9640 fans |
| Optics and cables | SFP+ transceivers for the 24 access ports, QSFP28 optics and DAC for the 100G ports | QSFP28 |
| Related Extreme | Other SLX and MLX routing platforms | SLX 9540 | SLX 9850 | All SLX routers | MLX routers |
Which SLX 9640 do I need?
Decide first whether you want a complete router or a bare chassis. EN-SLX-9640-24S-AC-F arrives with AC supplies and fans fitted and is the simpler buy. EN-SLX-9640-24S is the chassis alone, which suits a site that already holds spare SLX power supplies and fans, or one that needs DC input or back-to-front airflow; in that case add supplies and fans of one airflow direction to the order. Then count ports: 24 SFP+ covers 1G and 10G handoffs to carriers, firewalls and core switches, and the QSFP28 ports carry 100G to the data center or another site. Check that the number of 100G ports in the listing matches what your design needs, and tell us the SLX-OS version you run so we can confirm the hardware matches. For a pure Layer 2 and Layer 3 switching role without large routing tables, an SLX switch is usually the better fit.
Frequently asked questions
How is the SLX 9640 different from the SLX 9540?
Both are 1RU routers with SFP+ and QSFP28 ports. The 9640 is the newer platform with higher forwarding capacity and larger route table scale, which matters for full-table peering and large MPLS deployments.
Can the 100G ports be broken out?
Supported QSFP28 ports break out to four 25G or four 10G links with a breakout cable or optic, which lets a 100G port feed several lower-speed devices. Check the SLX-OS release notes for the exact ports that support breakout on your version.
Does a used SLX 9640 come with a configuration on it?
No. Every unit is wiped and reset to factory defaults during testing, so it arrives clean and ready for your own configuration.
NetworkTigers has sold enterprise network equipment since 1996. Every router and part carries the NetworkTigers 365-day warranty. Need a quantity? Ask us for a quote.
Extreme EN-SLX-9640-24S-AC-F 24x 10GB SFP+ 4x 100GB QSFP28 F-B Airflow Switch
