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Four Optional Network Modules for Cisco Catalyst Switches

October 11 2013 , Written by Cisco & Cisco Router, Network Switch Published on #Cisco Modules - Cisco Cables - Cisco Memory

The Cisco Catalyst 3750-X Series and 3560-X Series Switches support four optional network modules for uplink ports. The 4 optional network modules are C3KX-NM-1G, C3KX-NM-10G, C3KX-NM-10GT and C3KX-SM-10G=.

What are the exact four optional network modules? Let’s have an overview on them.

C3KX-NM-1G: The module has four 1-Gigabit SFP module slots. Any combination of standard SFP modules is supported. SFP+ modules are not supported. If you insert an SFP+ module in the 1-Gigabit network module, the SFP+ module does not work, and the switch logs an error message.

Figure1: C3KX-NM-1G-1 Gigabit Ethernet Network Module

C3KX-NM-1G-1-Gigabit-Ethernet-Network-Module.jpg

1

Network module

3

LEDs

2

1 Gigabit Ethernet SFP slots

4

Captive screws

C3KX-NM-10G: The module has four slots. Two slots support only 1-Gigabit SFP modules. Two slots support either 1-Gigabit SFP or 10-Gigabit SFP+ modules. (Note:  The GLC-T SFP is not supported on the SFP+ slots of C3KX-NM-10G.) The four slots are grouped as two pairs, with each pair consisting of one SFP slot and one SFP+ slot. Each pair supports either two 1-Gigabit SFP modules or one 10-Gigabit SFP+ module. A 10-Gigabit SFP+ module cannot operate at the same time as the corresponding 1-Gigabit SFP module in the pair.

Figure2: C3KX-NM-10G-10-Gigabit Ethernet Network Module-SFP Ports
C3KX-NM-10G-10-Gigabit-Ethernet-Network-Module-SFP-Ports.jpg

1

Network module

4

LEDs

2

1 Gigabit Ethernet SFP slots

5

Captive screws

3

1 Gigabit or 10 Gigabit Ethernet SFP+ slots

 

 

Supported combinations of SFP and SFP+ modules:

  • Slots 1, 2, 3, and 4 with 1-Gigabit SFP modules
  • Slots 1 and 2 with 1-Gigabit SFP modules and Slot 4 with one 10-Gigabit SFP+ module
  • Slot 2 with one 10-Gigabit SFP+ module and Slots 3 and 4 with 1-Gigabit SFP modules
  • Slot 2 and Slot 4 each with 10-Gigabit SFP+ modules

A 10-Gigabit SFP+ module takes precedence over a 1-Gigabit SFP module except when an SFP module is first inserted in Slot 1 and has link. When you insert an SFP+ module in Slot 2, the SFP in Slot 1 retains link. The SFP+ module in Slot 2 does not operate.

When the SFP module in Slot 1 is shutdown, loses link, or is removed, the SFP+ module in Slot 2 turns on. The SFP module in Slot 1 does not work as long as an SFP+ module is in Slot 2, whether it has link up or not. The same precedence applies to Slots 3 and 4.

C3KX-NM-10GT: This module has two (copper) ports that support speeds of 1Gps or 10Gps.

Figure3: C3KX-NM-10GT-Two Port 10G BaseT Network Module

C3KX-NM-10GT-Two-Port-10G-BaseT-Network-Module.jpg

C3KX-NM-10GT-Two-Port-10G-BaseT-Network-Module02.jpg

C3KX-SM-10G=: This module has two slots that support either 1-Gigabit SFP or 10-Gigabit SFP+ modules (Te1/Gi2 and Te2/Gi4). The service module supports Net Flow and MACSec Uplink Encryption (switch- to-switch encryption between uplinks).

Figure4: C3KX-SM-10G-10G Service Module

C3KX-SM-10G-10G-Service-Module.jpg

1

Service module

2

1-Gigabit or 10-Gigabit Ethernet SFP+ slots

3

LEDs

4

Captive screws

C3KX-NM_BLNK=: The module has no ports.

Figure5: Blank Network Module

Blank-Network-Module.jpg

1

Network module

2

Captive screws

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