Cisco CXP Transceiver Modules - Refurbished, Used, New

Best Selling

Cisco CXP transceiver modules are 100G parallel optics for the CXP ports found on first-generation 100G line cards for the Nexus 7000 and 7700, the ASR 9000 and the ONS optical transport platforms. A CXP module carries 100GBASE-SR10 over twelve lanes of multimode fiber in each direction through a single MPO-24 connector, which makes it the short-reach option for 100G links inside a building, between rows or between a core switch and an optical shelf. This collection covers the CXP-100G-SR12 and the ONS-CXP-100G-SR10. NetworkTigers sells Cisco CXP modules refurbished, used and new. Every module is tested before it ships so it links at 100G when it arrives.

Cisco CXP modules by part and reach

Part	Reach and connector	Shop
CXP-100G-SR12	100GBASE-SR10, 850 nm, multimode fiber, MPO-24 connector. For Nexus 7000 and 7700 and ASR 9000 CXP line card ports.	CXP-100G-SR12
ONS-CXP-100G-SR10	100GBASE-SR10, 850 nm, multimode fiber, MPO-24 connector. The ONS-coded variant for optical transport line cards.	ONS-CXP-100G-SR10
Short reach, OM3 fiber	Up to 100 m on OM3 multimode with a 24-fiber MPO trunk	CXP-100G-SR12 \| ONS-CXP-100G-SR10
Short reach, OM4 fiber	Up to 150 m on OM4 multimode with a 24-fiber MPO trunk	CXP-100G-SR12 \| ONS-CXP-100G-SR10
All Cisco CXP listings	Every CXP module on the page, refurbished, used and new	CXP-100G
Related Cisco optics	Other Cisco 100G and 40G form factors	All Cisco optics \| CFP \| CPAK \| QSFP

Which Cisco CXP module do I need?

Check the port, not just the speed. CXP is a larger form factor than QSFP28 and fits only a CXP cage. If your line card takes CPAK, CFP or QSFP28, you need that form factor instead, even though all of them can run 100G.
Match the part to the platform. Use the CXP-100G-SR12 in Nexus and ASR line cards, and the ONS-CXP-100G-SR10 where the ONS platform expects an ONS-coded module. Tell us the line card part number and we will confirm the match before you ship it.
Fiber and connector. SR10 needs a 24-fiber MPO trunk, OM3 or OM4, with the correct polarity. A 12-fiber MPO cable used for 40G QSFP optics will not carry a 100G SR10 link.
Distance. Plan on 100 m over OM3 and 150 m over OM4, measured along the routed path. For longer runs, a single-mode optic in a CPAK or CFP port is the right tool.
Both ends. SR10 links need SR10 at each end. A CXP SR10 module will not link to a 100GBASE-SR4 QSFP28 on the far side.

Frequently asked questions

Why do listings say SR10 when the part number says SR12?
The CXP connector has twelve lanes in each direction. 100GBASE-SR10 uses ten of them at 10G each; the SR12 part number refers to the physical lane count. Both parts on this page run as 100GBASE-SR10.

Are CXP modules still worth buying?
Yes, if you run CXP line cards. Replacing a failed CXP optic is far cheaper than replacing the line card and its neighbors with QSFP28 hardware, and these modules keep existing 100G links running on the fiber already in the building.

Can I use a CXP module for 120G InfiniBand?
The CXP form factor is also used for 12x 10G InfiniBand links, but the Cisco modules here are coded for 100 Gigabit Ethernet on Cisco line cards. Tell us the host if you have an InfiniBand application and we will check.

NetworkTigers has sold enterprise network equipment since 1996. Every module carries the NetworkTigers 365-day warranty. Need a matched pair or a quantity? Ask us for a quote.