The Catalyst 6840-X switch family consists of four fixed-aggregation switches supporting redundant power
supplies. The chassis has 16/24/32/40 fixed 10-Gigabit SFP+, 1-Gigabit SFP, or 100BASE-FX SFP ports
and also 40-Gigabit uplink ports on selected switch models.
Switch Models, page 1
•
Front Panel Components, page 2
•
Rear Panel, page 21
•
Switch Models
Table 1: Switch Models
DescriptionSwitch Model
16 10-Gigabit SFP+ ports and two power supply slotsCatalyst 6816-X-LE
32 10-Gigabit SFP+ ports and two power supply slotsCatalyst 6832-X-LE
Catalyst 6824-X-LE-40G
Catalyst 6840-X-LE-40G
24 10-Gigabit SFP+ports and two 40-Gigabit QSFP+ uplink
ports, and two power supply slots
40 10-Gigabit SFP+ and two 40-Gigabit QSFP+ uplink ports,
and two power supply slots
Catalyst 6840-X Switch Series Hardware Installation Guide
1
Page 2
Front Panel Components
Front Panel Components
Figure 1: Catalyst 6816-X-LE
Product Overview
Catalyst 6840-X Switch Series Hardware Installation Guide
2
Page 3
Product Overview
Front Panel Components
1
fiber-optic ports
Console port (RJ-45 Serial)616 10G SFP+ ports or 100 MB or 1G SFP
Ethernet management SFP port7Grounding pad2
System ID (blue beacon LED)8USB mini Type B console port3
Reset button9USB Type A host port4
Two power supply slots
10Ethernet management RJ-45 port5
1
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 4
Front Panel Components
1
Power supplies that are ordered are installed in the switch. If the second power supply is not ordered, a blank panel is installed.
Figure 2: Catalyst 6832-X-LE
Product Overview
1
fiber-optic ports
Catalyst 6840-X Switch Series Hardware Installation Guide
4
Console port (RJ-45 Serial)632 10G SFP+ ports or 100 MB or 1G SFP
Page 5
Product Overview
Ethernet management SFP port7Grounding pad2
System ID (blue beacon LED)8USB mini Type B console port3
Reset button9USB Type A host port4
Two power supply slots
10Ethernet management RJ-45 port5
2
Front Panel Components
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 6
Front Panel Components
2
Power supplies that are ordered are installed in the switch. If the second power supply is not ordered, a blank panel is installed.
Figure 3: Catalyst 6824-X-LE-40G
Product Overview
1
fiber-optic ports
Catalyst 6840-X Switch Series Hardware Installation Guide
6
Ethernet management SFP port724 10G SFP+ ports or 100 MB or 1G SFP
Two 40G QSFP+ uplink ports8Grounding pad2
Page 7
Product Overview
Front Panel Components
System ID (blue beacon LED)9USB mini Type B console port3
Reset button10USB Type A host port4
Two power supply slots
11Ethernet management RJ-45 port5
3
Console port (RJ-45 Serial)6
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 8
Front Panel Components
3
Power supplies that are ordered are installed in the switch. If the second power supply is not ordered, a blank panel is installed.
Figure 4: Catalyst 6840-X-LE-40G
Product Overview
1
fiber-optic ports
Catalyst 6840-X Switch Series Hardware Installation Guide
8
Two 40G QSFP+ uplink ports740 10G SFP+ ports or 100 MB or 1G SFP
Ethernet management SFP port8Grounding pad2
Page 9
Product Overview
SFP and SFP+ Transceiver Module Ports
System ID (blue beacon LED)9USB mini Type B console port3
Reset button10USB Type A host port4
Two power supply slots
11Ethernet management RJ-45 port5
4
Console port (RJ-45 Serial)6
4
Power supplies that are ordered are installed in the switch. If the second power supply is not ordered, a blank panel is installed.
SFP and SFP+ Transceiver Module Ports
The chassis contains 16/24/32/40 ports of 10-Gigabit Ethernet SFP+ or 100BASE-FX fiber-optic transceiver
modules. All ports support 1-Gigabit SFP, 10-Gigabit SFP+, or 100BASE-FX fiber-optic SFP modules with
two 40-Gigabit uplink ports on selected switch models.
The ports also support Cisco Trust Security (CTS) and virtual switch link (VSL) and can operate as an Instant
Access (IA) Parent in both 1-Gigabit, 10-Gigabit modes and 40-Gigabit modes.
The SFP and SFP+ transceiver modules provide copper or fiber-optic connections to other devices. These
transceiver modules are field-replaceable and provide the uplink interfaces when installed in an SFP module
slot. The SFP transceiver modules have LC connectors for fiber-optic connections or RJ-45 connectors for
copper connections.
For a list of supported SFP and SFP+ modules, see the switch data sheet: http://www.cisco.com/c/en/us/
The odd-numbered ports are on the upper row and the even-numbered ports on the lower row. The following
figures show how the ports and the LEDs are numbered on different switch models. This section also explains
the port mapping between 10-Gigabit and 40-Gigabit ports.
Catalyst 6816-X-LE
Figure 5: 10G native port numbering
Table 2: Port mapping for Catalyst 6816-X-LE
10-Gigabit ports
Configurable 40-Gigabit ports
5
171, 2, 3, and 4
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 10
SFP and SFP+ Transceiver Module Ports
Product Overview
10-Gigabit ports
Configurable 40-Gigabit ports
5
185, 6, 7, and 8
199, 10, 11, and 12
2013, 14, 15, and 16
5
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G SFP+ ports of the switch on one end to a 40G QSFP
port of the switch on the other end.
Catalyst 6832-X-LE
Figure 6: 10G native port numbering
Table 3: Port mapping for Catalyst 6832-X-LE
10-Gigabit ports
Catalyst 6840-X Switch Series Hardware Installation Guide
10
Configurable 40-Gigabit ports
331, 2, 3, and 4
345, 6, 7, and 8
359, 10, 11, and 12
3613, 14, 15, and 16
3717, 18, 19, and 20
3821, 22, 23, and 24
6
Page 11
Product Overview
SFP and SFP+ Transceiver Module Ports
10-Gigabit ports
Configurable 40-Gigabit ports
6
3925, 26, 27, and 28
4029, 30, 31, and 32
6
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G SFP+ ports of the switch on one end to a 40G QSFP
port of the switch on the other end.
Catalyst 6824-X-LE-40G
Figure 7: 10G native port numbering
Table 4: Port mapping for Catalyst 6824-X-LE
10-Gigabit ports
Configurable 40-Gigabit ports
7
351, 2, 3, and 4
365, 6, 7, and 8
379, 10, 11, and 12
3813, 14, 15, and 16
3917, 18, 19, and 20
4021, 22, 23, and 24
7
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G SFP+ ports of the switch on one end to a 40G QSFP
port of the switch on the other end.
40-Gigabit native ports
Configurable 10-Gigabit ports
8
27, 28, 29, and 3025
31, 32, 33, and 3426
8
To configure 40G ports to function as 10G ports, you need to use Cisco QSFP to four SFP+ Active Optical Breakout Cables that connect a 40G QSFP port of
the switch on one end to four 10G SFP+ ports of the switch on the other end.
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 12
SFP and SFP+ Transceiver Module Ports
Catalyst 6840-X-LE-40G
Figure 8: 10G native port numbering
Product Overview
Table 5: Port mapping for Catalyst 6840-X-LE
10-Gigabit ports
Configurable 40-Gigabit ports
511, 2, 3, and 4
525, 6, 7, and 8
539, 10, 11, and 12
5413, 14, 15, and 16
5517, 18, 19, and 20
5621, 22, 23, and 24
5725, 26, 27, and 28
5829, 30, 31, and 32
5933, 34, 35, and 36
6037, 38, 39, and 40
9
9
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G SFP+ ports of the switch on one end to a 40G QSFP
port of the switch on the other end.
40-Gigabit native ports
Catalyst 6840-X Switch Series Hardware Installation Guide
12
Configurable 10-Gigabit ports
43, 44, 45,, and 4641
47, 48, 49, and 5042
10
Page 13
Product Overview
Power Supply Slots
10
To configure 40G ports to function as 10G ports, you need to use Cisco QSFP to four SFP+ Active Optical Breakout Cables that connect a 40G QSFP port of
the switch on one end to four 10G SFP+ ports of the switch on the other end.
Power Supply Slots
The chassis has two power supply slots that accept either AC-input or DC-input power supplies, or one of
each. The chassis is delivered with power supplies pre-installed in the power supply slots. If only one power
supply is ordered, then a blank cover is installed in the empty power supply slot, which must remain installed
if a power supply is not installed.
Table 6: Power supplies supported by the switches
Power SupplySwitch
750W and 1100WCatalyst 6816-X-LE
750W and 1100WCatalyst 6832-X-LE
Catalyst 6840-X-LE-40G
Related Topics
Front Panel Components
Management Port
The management port is a 10/100/1000 copper Ethernet port directly connected to the route processor. The
switch also has a fibre port that can be used as the Ethernet Management port. It supports TFTP image
downloading, network management, SNMP, Telnet, and SSH connections. The management port is isolated
from other ports in the system in a dedicated management VRF; it is not part of the EARL forwarding logic.
The management port provides direct access to the CPU, even when the system is heavily loaded.
The management port is a Layer 3 port in host mode, and only accepts traffic that terminates on the router.
This port does not route packets between itself and other ports. The port processes only the following packet
types and properly enqueues them:
750W and 1100WCatalyst 6824-X-LE-40G
1100W
Note
If you insert a 750W power supply in to the
power supply slot of a Catalyst
6840-X-LE-40G switch, the switch fails to
boot.
Address Resolution Protocol (ARP)
•
IPv4 unicast
•
IPv6 unicast
•
Cisco Discovery Protocol (CDP)
•
Catalyst 6840-X Switch Series Hardware Installation Guide
13
Page 14
Mini USB Type B Console Port
Link Layer Discovery Protocol (LLDP)
•
Related Topics
Front Panel Components
Mini USB Type B Console Port
The Mini USB 2.0 Type B console port functions as a second console connection to the route processor. The
USB console port connection uses a Mini USB 2.0 cable. The USB console interface speed is same as the
RJ-45 console interface speed.
Windows computers require a driver for the USB port. Before using the USB port, you must download the
required driver to your computer from https://software.cisco.com/download/
By default, USB-prefer mode is enabled for the port; but it can be overridden using the command-line interface
(CLI). When this port is in the USB-prefer mode, the RJ-45 console port will be disabled, if both the ports
are connected. For more information on using the CLI to configure the USB console interface, see the Catalyst6500 Software Configuration Guide.
Product Overview
Related Topics
USB Type A Port
The USB 2.0 Type A port (disk0) is the only external storage interface for this switch. The port is connected
to the route processor, which allows the Cisco IOS software to access the port. The port supports Cisco USB
flash drives with capacities from 128 MB to 8 GB (USB devices with port densities of 128 MB, 256 MB, 1
GB, 4 GB, and 8 GB are supported). Cisco IOS software provides standard file system access to the flash
device: read, write, erase, and copy. The software also provides the ability to format the flash device with a
FAT file system (FAT32 and FAT16).
Related Topics
Console Port
The console port is an RJ-45 port that provides universal asynchronous receiver/transmitter (UART) support
to access the route processor with a serial console running at 9600 baud rate with 8 bits for data, no parity bit,
and 1 stop bit.
Related Topics
Front Panel Components
Front Panel Components
Front Panel Components
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 15
Product Overview
System Reset Button
This recessed access button is used to reset the system. Pressing the button brings down the route processor.
Related Topics
Front Panel Components
Fan Tray
The fan tray is responsible for cooling the entire chassis and interfacing with environmental monitors to trigger
alarms when conditions exceed thresholds. The fan tray supports Online Insertion and Removal (OIR).
The fan tray contains four high-efficiency fans with variable speed settings and thermal sensors. If one fan
fails, the speed of the others is increased and a minor alarm is triggered. If a major fan tray failure occurs, the
system is shut down. The individual fans are not field replaceable; the entire fan tray must be replaced in the
event of a major fan tray failure. See Removing the Fan Tray for additional information about the fan.
System Reset Button
Related Topics
Front Panel Components
Fan Tray LED, on page 19
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 16
LED Indicators
LED Indicators
Product Overview
You can use the switch LEDs to monitor switch activity and performance. You can also monitor the status of
the fan tray assembly, and the power supplies.
Figure 9: Status, Fan, and System ID LEDs
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 17
Product Overview
LED Indicators
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 18
LED Indicators
Status LED
Product Overview
The status LED indicates the status of the system.
Table 7: Status LED Indicator
DescriptionColor/State
System is not operational.Off
System is operating normally without alarms.Green
System has triggered a minor environmental alarm.Amber
System has triggered a major environmental alarm.Red
System ID LED
The System ID (blue beacon) LED can be provisioned by the operator to indicate that the switch needs
attention.
Table 8: System ID LED Indicator
Management Port LED
This table describes the management port LEDs.
Table 9: Management Port LED Indicator
DescriptionColor/State
The system needs attention.Blinking blue
DescriptionColor/State
Port is not provisioned.Off
Port is provisioned, but administratively not operational.Amber
Port is linked up.Green
Alternating green and amber
Catalyst 6840-X Switch Series Hardware Installation Guide
18
A port fault is detected, or the port beacon has been provisioned by
the operator.
Page 19
Product Overview
Fan Tray LED
LED Indicators
The Fan LED is located on the front panel of the switch. The following image depicts the Fan LED, the system
status LED, and the blue beacon LED on the front panel of the switch.
Table 10: Fan LED Indicator
DescriptionColor/State
The fan tray is not receiving power; the fans have stopped.Off
All fans are operating normally.Green
The fan tray has a failure.Amber
Related Topics
Fan Tray, on page 15
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 20
LED Indicators
Power Supply LEDs
The power supply includes LEDs on the front of the module. The different states of the LEDs are described
in the following table.
Figure 10: Power Supply LED
Product Overview
Table 11: Power Supply LED Indicators
Catalyst 6840-X Switch Series Hardware Installation Guide
20
DescriptionColor/StateLED
Power supply is operating normally.Solid greenOK
Power supply is shut down.Blinking greenOK
Page 21
Product Overview
Rear Panel
DescriptionColor/StateLED
Power supply is failed.YellowOK
Rear Panel
Figure 11: Rear Panel
Blinking yellowOK
The power supply needs attention, activated
for events like high temperature, high power
or slow fan.
Fan trays1
Catalyst 6840-X Switch Series Hardware Installation Guide
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Page 22
Rear Panel
Product Overview
Catalyst 6840-X Switch Series Hardware Installation Guide
22
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