Cisco C9400X-SUP-2 | Catalyst 9400 Supervisor 2 Module, 240 Gbps/Slot, 4x 25G SFP28

Q: What is the difference between C9400X-SUP-2 and C9400X-SUP-2XL?
A: The SUP-2 provides 240 Gbps per slot with four 25G/10G SFP28 uplinks, optimized for mid-tier aggregation. The SUP-2XL delivers 480 Gbps per slot with four 100G/40G QSFP28 uplinks plus four 25G/10G SFP28 uplinks, designed for core and high-capacity aggregation.

Q: Can this supervisor module be used with older Catalyst 9400 line cards?
A: Yes, the C9400X-SUP-2 is backward compatible with existing Catalyst 9400 line cards. However, line cards will operate at their supported bandwidth (e.g., 240 Gbps, 120 Gbps, or 80 Gbps per slot depending on the line card model), and you must run compatible IOS XE software.

Q: Does the C9400X-SUP-2 require a Cisco DNA license?
A: Cisco DNA licensing is optional. The supervisor supports advanced Cisco DNA features such as SD-Access, Encrypted Traffic Analytics, and automation when DNA Essentials, Advantage, or Premier licenses are applied to the switch.

Q: Can I install the C9400X-SUP-2 in a redundant configuration?
A: Yes, Catalyst 9400 Series chassis support dual supervisor configurations for high availability. The C9400X-SUP-2 supports stateful switchover (NSF/SSO) and in-service software upgrades (ISSU) for zero-downtime maintenance.

Q: What are the uplink port capabilities on the C9400X-SUP-2?
A: The module features four SFP28 ports supporting 25 Gbps and 10 Gbps speeds. These onboard uplinks free up line card slots for user-facing ports and simplify cabling in aggregation deployments.