cisco Catalyst 6800 Catalyst 6840-X
The Cisco Catalyst 6840-X switch series is a compact 1U fixed-configuration 10GbE aggregation and campus core switch delivering enterprise-class Layer 2 and Layer 3 services. Featuring 16, 24, or 32 fixed 10G SFP+ ports with 40G QSFP+ uplinks, the 6840-X offers low power consumption, full MPLS/VPLS forwarding, and native VSS multi-chassis virtualization in a short 1U depth.
Specifications
| Brand | cisco |
|---|---|
| Family | Catalyst 6800 |
| Form factor | 1U fixed switch |
| Released | Jun 2015 |
| End of sale | Oct 2020 |
| End of support | Oct 2025 |
| Form factor | 1U or 2U fixed-configuration switch |
| Port density | 16, 24, or 32 ports 10GbE SFP+ with 2x or 4x 40GbE QSFP+ uplinks |
| Switching capacity | Up to 960 Gbps |
| Forwarding rate | Up to 720 Mpps |
| Power supplies | Dual redundant hot-swappable power supplies and fan trays |
| Software | Cisco IOS 15.2(1)SY with full Enterprise Services |
Generations
- Next generation: cisco Catalyst 9500 Catalyst 9500
Check compatibility with Cisco
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Cisco has tested with the cisco Catalyst 6800 Catalyst 6840-X.
- Compatibility Cisco UCS Hardware Compatibility List
- Compatibility Cisco Optics-to-Device Compatibility Matrix
- Support Cisco Support and Downloads
Equivalent models from other brands
FAQ
How does the 6840-X differ from the 4500-X?
The 6840-X runs the Catalyst 6500/6800 software code base (IOS 15SY) with native Instant Access FEX support and 40GbE uplinks.
Can two 6840-X switches form a VSS pair?
Yes, Virtual Switching System is fully supported using 10G or 40G ports as virtual switch links.
Buying or selling Catalyst 6840-X?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Cisco Catalyst 6840-X Product Documentation, checked 2026-10-27
- Cisco Catalyst 6840-X Data Sheet and Technical Specifications, checked 2026-10-27