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XENPAK documentation, and support for XENPAK on the Cisco 3750 Series switches

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XENPAK is a transceiver that provides 10-Gigabit Ethernet connectivity on the Cisco Catalyst WS-C3750G-16TD switches. XENPAK modules are only supported on the Cisco Catalyst 3750G-16TD switches.

These are the XENPAKs that are supported on the Cisco Catalyst WS-3750 switches:

  • XENPAK-10-GB-ER: 10GBASE-ER Serial 1550-nm extended-reach, single-mode fiber (SMF), dispersion-shifted fiber

  • XENPAK-10-GB-LR: 10GBASE-LR Serial 1310-nm long-reach, single-mode fiber (SMF), dispersion-shifted fiber (DSF)

  • XENPAK-10-GB-SR: (limited orderability) XENPAK: 10GBASE-SR Serial 850-nm short-reach multimode (MMF)

These XENPAK transceivers are also available:

  • XENPAK-10-GB-LX4: 10GBASE-LX4 Serial 1310-nm multimode (MMF)

  • XENPAK-10-GB-CX4: 10GBASE for CX4 (copper) cable


The new Cisco Catalyst 3750-24PS and Catalyst 3750-48PS switches do not support the XENPAKs.

WS-X6704-10GE 4-port 10-Gigabit Ethernet XENPAK is not supported by the Supervisor Engine 32.

Refer to Cisco 10GBASE XENPAK Modules for more information.

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