Check connector, platform and module support before substituting legacy data-center parts.
The practical distinction
A speed label summarizes throughput. It does not encode cage geometry, electrical lanes, media or supported host software. A CXP module cannot be substituted with QSFP28 merely because both are described as 100G.
What the product details tell you
- N5696-M4C uses CXP; it is not a QSFP28 port module. Equal aggregate rates do not establish a compatible plug or electrical interface.
- N5696-M12Q support depends on the intended Nexus host. Check the installation guide and software for the exact combination.
- N2K-C2232TM-E is a Fabric Extender, not an independent stand-alone switch. Maximum chassis port counts may depend on optional modules.
Applying it to a project
Record the current host, expansion modules, Fabric Extenders and uplinks. Check compatibility before changing the topology. Stage the target configuration and preserve the original image and cabling plan for rollback.
Checks that resolve the uncertainty
- Compare port and connector types physically and in the support documentation.
- Verify module and FEX recognition by the parent switch.
- Test the replacement under the required traffic and failure conditions.
Related products
Topic associations; verify the complete configuration before ordering.
- Cisco N5K-C5696Q Modular 40G Data Center Switch
- Cisco N2K-C2232TM-E 32-Port 10GBASE-T Fabric Extender
- Cisco N5696-M12Q 12-Port 40G Line Card
- Cisco N5696-M4C 4-Port 100G CXP Line Card
- Cisco N5K-C5624Q 12-Port Base / 24-Port Expandable 40G Switch
- Cisco N5K-C5648Q 24-Port Base / 48-Port Expandable 40G Switch
- Cisco N5K-C5672UP-RF 48-Port 10G Unified-Port Switch with Six 40G Ports
- Cisco N3K-C3172TQ-XL-RF 48-Port 10GBASE-T Switch with Six 40G Ports
Sources
- Nexus 2000 Fabric Extender — official reference
- Nexus 5600 — official reference
- Cisco BGP EVPN in the Datacenter — official reference
- Nexus 5600 40G — official reference
- Nexus 2000 — official reference
- Nexus 5600 10G — official reference
- Nexus 3172PQ/TQ XL — official reference
- Nexus 3172TQ-XL / — official reference