• Cisco C6840-X-LE-40G silver server rack with black panel and ports
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Cisco

Cisco C6840-X-LE-40G | Catalyst 6840-X 40-Port 10G SFP+ Switch, 2x 40G, LE

C6840-X-LE-40G

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Description

The Catalyst 6840-X is a fixed-configuration 2RU campus backbone switch built on the Catalyst 6500 Supervisor 2T architecture. It suits small and midsize campus cores and distribution layers that need 10G and 40G density with full Layer 2 and Layer 3 services, including MPLS, VPLS and IPv4/IPv6 routing.

This C6840-X-LE-40G model provides 40 x 10G SFP/SFP+ ports plus 2 native 40G QSFP+ uplinks, with up to 240 Gbps of full-duplex switching capacity and up to 180 Mpps of forwarding performance. It is the Standard Tables (LE) variant, with 256K IPv4 routes, 128K MAC entries and 1.5M NetFlow entries per system. Power comes from 1+1 redundant 1100W supplies, available in AC or DC, and the chassis supports Virtual Switching System (VSS) pairing for high availability.

Optics support covers 10G SFP+ modules such as SFP-10G-SR, LRM, LR, ER and ZR, SFP+ twinax cables, and a range of 1G SFP modules including GLC-SX-MM, GLC-LH-SM and GLC-T. VSS is supported between all four 6840-X chassis models.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Virtual Switching System (VSS) pairing for a single point of management and high availability
- Cisco TrustSec with IEEE 802.1AE MACsec encryption, role-based ACL and CoPP
- Virtualisation suite with L2/L3 VPN, full MPLS, VPLS, EVN, VRF-aware NAT/NetFlow and GRE
- Flexible and Sampled NetFlow with hierarchical QoS for application visibility and control
- Large buffers, SGT, LISP, dual priority queues and two-level shaping
- Cisco Catalyst Instant Access and Smart Install Director for zero-touch deployment
- Hot-swappable redundant power supplies and fan tray with four redundant fans

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Ports: 40 x 10G SFP/SFP+ (plus 8 x 10G using breakout cable)
- Uplinks: 2 x 40G native QSFP+
- Switching capacity: Up to 240 Gbps full duplex
- Forwarding performance: Up to 180 Mpps
- Chassis: 2RU fixed
- Power supplies: 1+1 redundant, 1100W AC or DC
- Input voltage: 100 to 240 VAC; -48 to -72 VDC
- MAC entries: 128K
- Routes: 256K IPv4 / 128K IPv6
- NetFlow entries: 1.5M per system
- ACL entries: 64K shared for QoS/security
- Multicast routes: 128K IPv4 / 64K IPv6
- VLANs: 4094
- Jumbo frame support: Up to 9216 bytes
- Onboard memory: 4GB
- Software compatibility: 15.2(2)SY and later releases
- Dimensions (H x W x D): 8.89 x 44.07 x 54.66 cm
- Weight (chassis with 2 power supplies and built-in fan): 16.8 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -20 to 65 C
- Relative humidity (operating): 5% to 90% non-condensing
- Maximum port density (VSS): 78 x 10G native ports per pair

FAQs

Q: Which software feature sets does the 6840-X run?
A: The Catalyst 6840-X runs IOS 15.2(2)SY or later, with IP Services and Advanced Enterprise Services feature sets. Cisco ONE Software for Access Switching is also available.

Q: Which power supplies does this model use?
A: The C6840-X-LE-40G is the only 6840-X model that uses the 1100W supplies, C6840-X-1100W-AC= or C6840-X-1100W-DC=. It supports 1+1 redundant hot-swappable supplies.

Q: Which optics and cables work with the 10G ports?
A: 10G SFP+ options include SFP-10G-SR, LRM, LR, ER, ZR and DWDM-SFP10G, and twinax cables such as SFP-H10GB-CU1M, CU3M and CU5M. 1G SFP modules such as GLC-SX-MM, GLC-LH-SM and GLC-T are also supported.

Q: How does the LE variant differ from other 6840-X models?
A: The LE variant uses Standard Tables, giving 256K IPv4 routes and 1.5M NetFlow entries per system, and pairs 40 x 10G SFP+ ports with 2 x 40G QSFP+ uplinks and 1100W power supplies.

Q: Does the 6840-X support VSS?
A: Yes. VSS is supported between all four 6840-X chassis models, giving up to 78 x 10G native ports per VSS pair.

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