Table Of Contents
Installing a Network Module
Overview
Network Module LEDs
Installing a Network Module in the Switch
Safety Warnings
Tools and Equipment
Installing Network Modules
Removing a Network Module
SFP and SFP+ Modules
Installing SFP and SFP+ Modules
Removing SFP or SFP+ Modules
Finding the Network Module Serial Number
Installing a Network Module
This chapter describes how to install and connect a network module.
•
Overview
•Installing a Network Module in the Switch
•SFP and SFP+ Modules
•Finding the Network Module Serial Number
Overview
Table 3-1 Network Modules
|
|
Description
|
C3850-NM-4-1G
|
This module has four 1-Gigabit SFP module slots. Any combination of standard SFP modules are supported. SFP+ modules are not supported.
If you insert an SFP+ module in the 1-Gigabit network module, the SFP+ module does not operate, and the switch logs an error message.
|
C3850-NM-2-10G
|
This module has four slots that support the following combinations:
•Two slots (left side) support only 1-Gigabit SFP modules and two slots (right side) support either 1-Gigabit SFP or 10-Gigabit SFP modules.
•Three slots (left side) support 1-Gigabit SFP modules and one slot (right side) supports 10-Gigabit Ethernet SFP+.
Supported combinations of SFP and SFP+ modules:
•Slots 1, 2, 3, and 4 populated with 1-Gigabit SFP modules.
•Slots 1 and 2 populated with 1-Gigabit SFP modules, and Slot 4 populated with one 10-Gigabit SFP+ module.
•Slot 3 and Slot 4 each populated with 10-Gigabit SFP+ modules.
|
C3850-NM-4-10G
|
This module has four 10-Gigabit slots or four 1-Gigabit slots.
Note This is only supported on the 48-port models.
|
C3850-NM-BLANK
|
This module has no uplink ports.
|
Figure 3-1 C3850-NM-4-1G Network Module
1
|
Captive screws
|
3
|
LEDs
|
2
|
1-Gigabit Ethernet ports
|
|
|
Figure 3-2 C3850-NM-2-10G Network Module
1
|
Captive screws
|
3
|
1-Gigabit Ethernet SFP slots
|
2
|
1-Gigabit or 10-Gigabit Ethernet SFP+ slots
|
4
|
LEDs
|
Figure 3-3 C3850-NM-4-10G Network Module
1
|
Captive screws
|
3
|
LEDs
|
2
|
10-Gigabit slots or 1-Gigabit Ethernet SFP slots
|
|
|
Figure 3-4 Blank Network Module
1
|
Blank module
|
2
|
Captive screws
|
Network Module LEDs
The network module LEDs show the link status for the transceivers.
Table 3-2 Network Module LEDs
Color
|
Link Status
|
Off
|
Link is off.
|
Green
|
Link is on, no activity.
|
Blinking green
|
Activity on a link, no faults.
|
Blinking amber
|
Link is off due to a fault or because it has exceeded a limit set in the switch software.
Caution Link faults are caused when noncompliant cabling is connected to an SFP or an SFP+ port. Use only standard-compliant cabling to connect to SFP and SFP+ ports. You must remove from the network any cable or device that causes a link fault.
|
Amber
|
Link for the SFP or SFP+ is disabled.
|
Installing a Network Module in the Switch
•Safety Warnings
•Tools and Equipment
•Installing Network Modules
•Removing a Network Module
Safety Warnings
This section includes the installation cautions and warnings. Translations of the safety warnings appear in the Regulatory Compliance and Safety Information for the Catalyst 3850 Switches on Cisco.com:
http://www.cisco.com/go/cat3850_hw
Read this section before you install a network module.
Caution Proper ESD protection is required whenever you handle equipment. Installation and maintenance personnel should be properly grounded by grounding straps to eliminate the risk of ESD damage to the equipment. Equipment is subject to ESD damage whenever you remove it.
 |
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
|
|
Warning Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry could constitute an energy hazard. Statement 206
|
Tools and Equipment
You need to supply a number-2 Phillips screwdriver.
Installing Network Modules
Note Although network modules are hot-swappable, we recommend installing a network module before powering the switch.
Note The switch can operate without a network module, but a blank module (with no ports or SFP slots) is available and should be installed when uplink ports are not required.
Note The switch generates logs when you insert or remove a network module with SFP slots.
Use only supported network modules and SFP or SFP+ modules. Each module has an internal serial EEPROM that is encoded with security information. For information about supported SFP modules, see the "SFP and SFP+ Modules" section.
The network module is hot-swappable. If you remove a module, replace it with another network module or a blank module.
Note The switch complies with EMC, safety, and thermal specifications when a network module is present. If no uplink ports are required, install a blank network module.
When installing network modules, observe these precautions:
•Do not remove the EMC plug from the 10-Gigabit Ethernet slot until you install an SFP or SFP+ module. Either a module or a dust plug must be in the slot at all times.
•Do not remove the dust plugs from the fiber-optic SFP modules or the rubber caps from the fiber-optic cable until you connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.
•Removing and installing a network module can shorten its useful life. Do not remove and insert a network module more often than is necessary.
•To prevent ESD damage, follow your normal board and component handling procedures when connecting cables to the switch and other devices.
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Remove the module from the protective packaging.
Step 3 Remove the 10-Gigabit Ethernet module slot EMC plug, and save it.
Caution Verify the correct orientation of your module before installing it. Incorrect installation can damage the module.
Caution Do not install the network module with connected cables or installed SFP modules. Always remove any cables and modules before you install the network module.
Caution A module interface might become error-disabled when a network module with connected fiber-optic cables is installed or removed. If an interface is error-disabled, you can reenable the interface by using the
shutdown and
no shutdown interface configuration commands.
Step 4 Position the module face up to install it in the module slot. Slide the module into the slot until the back of the module faceplate is flush with the switch faceplate. Fasten the captive screws to secure the network module in place.
Figure 3-5 Installing the Network Module in the Switch
Removing a Network Module
Note The switch meets the applicable compliance and thermal specifications when a network module is present. If no uplink ports are required, install a blank network module.
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Caution Do not remove the network module with installed SFP cables or modules. Always remove any cables and modules before removing the network module from the slot.
Caution A module interface might become error-disabled when a network module with connected fiber-optic cables is installed or removed. If an interface is error-disabled, you can reenable the interface by using the
shutdown and
no shutdown interface configuration commands.
Step 2 Disconnect the cables from the SFP modules.
Step 3 Remove the SFP modules from the network module.
Step 4 Loosen the captive screws that hold the network module in place.
Step 5 Carefully press the tab on the right side of the network module to release it. Grasp the edges of the module, and carefully slide it out of the slot.
Step 6 Install a replacement network module or a blank module in the slot.
Step 7 Place the module that you removed in an antistatic bag or other protective environment.
SFP and SFP+ Modules
See the "SFP and SFP+ Modules" section for information on the supported modules.
Installing SFP and SFP+ Modules
You must have an installed network module to use SFP and SFP+ modules.
See the "SFP and SFP+ Modules" section, and the switch release notes on Cisco.com for the list of supported SFP and SFP+ modules. Use only supported SFP modules on the switch.
For cable specifications, see "Connector and Cable Specifications."
Observe these precautions:
|
Warning Class 1 laser product. Statement 1008
|
•Do not remove the dust plugs from the SFP modules or the rubber caps from the fiber-optic cable until you are ready to connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.
•Removing and installing an SFP module can shorten its useful life. Do not remove and insert any SFP module more often than is necessary.
•To prevent ESD damage, follow your normal board and component handling procedures when connecting cables to the switch and other devices.
Caution To avoid damage to the network module, install the network module before you install the SFP or SFP+ modules.
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Find the send (TX) and receive (RX) markings that identify the top of the SFP module.
On some SFP modules, the send and receive (TX and RX) markings might be shown by arrows that show the direction of the connection.
Step 3 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.
Step 4 Align the module in front of the slot opening, and push until you feel the connector snap into place.
Figure 3-6 Installing an SFP Module in the Network Module
Step 5 If the module has a bale-clasp latch, close it to lock the SFP module in place.
Step 6 Remove the SFP dust plugs and save.
Step 7 Connect the SFP cables.
Figure 3-7 Network Module with SFP Modules Installed
1
|
Network module
|
3
|
Send (TX) optical bore
|
2
|
SFP modules
|
4
|
Receive (RX) optical bore
|
Removing SFP or SFP+ Modules
Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.
Step 2 Disconnect the cable from the SFP module. For reattachment, note which cable connector plug is send (TX) and which is receive (RX).
Step 3 Insert a dust plug into the optical ports of the SFP module to keep the optical interfaces clean.
Step 4 If the module has a bale-clasp latch, pull the bale out and down to eject the module. If you cannot use your finger to open the latch, use a small, flat-blade screwdriver or other long, narrow instrument to open it.
Step 5 Grasp the SFP module, and carefully remove it from the slot.
Step 6 Place the SFP module in an antistatic bag or other protective environment.
Finding the Network Module Serial Number
If you contact Cisco Technical Assistance regarding a network module, you need to know its serial number.
Figure 3-8 Network Module Serial Number Location
Feedback
