Configuring SFP

Configuring SFP+


Note

Several Cisco platforms, NIMs, and SM cards support configuring multiple-rate SFPs on same interface, e.g., 1G SFP or 10G SFP+ on a 10G port.

In a port-channel bundle, all member interfaces should be of same speed, and duplex. It is recommended to use duplex interfaces of the same speed as member interfaces for configuring a port-channel.

For more information about interfaces that support multiple-rate SFPs, see the corresponding datasheets.

SUMMARY STEPS

  1. enable source-interface gigabitethernet slot/port
  2. configure terminal
  3. interface tengigabitethernet slot/port

DETAILED STEPS

  Command or Action Purpose

Step 1

enable source-interface gigabitethernet slot/port

Example:


Router# enable

Enables the privileged EXEC mode. If prompted, enter your password.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface tengigabitethernet slot/port

Example:

Router(config)# interface tengigabitethernet 4/11

Specifies the 10-Gigabit Ethernet interface to be configured.

Here:

slot/port—Specifies the location of the interface.

Configuring FEC

Forward Error Correction (FEC) checks and recovers potential errors during long-range data transmission. The Cisco Catalyst 8530L-8S8X4Y and the Cisco Catalyst 8530L-8S2X2Y Edge Platforms have long range SFP, therefore FEC must be configured.

SUMMARY STEPS

  1. enable source-interface gigabitethernet slot/port
  2. configure terminal
  3. interface twentyfivegigabitethernet slot/port
  4. fec { auto | cl108 | cl74 | off}

DETAILED STEPS

  Command or Action Purpose

Step 1

enable source-interface gigabitethernet slot/port

Example:


Router# enable

Enables the privileged EXEC mode. If prompted, enter your password.

Step 2

configure terminal

Example:


Router# configure terminal

Enters the global configuration mode.

Step 3

interface twentyfivegigabitethernet slot/port

Example:

Router(config)# interface twentyfivegigabitethernet 0/0/16 4/11

Specifies the 10-Gigabit Ethernet interface to be configured.

Here:

slot/port—Specifies the location of the interface.

Step 4

fec { auto | cl108 | cl74 | off}

Example:

Router(config)# interface twentyfivegigabitethernet 0/0/16 4/11

Configures FEC on the 25-Gigabit Ethernet interface.

Following are the modes of the fec command:

  • auto— Enables FEC based on SFP type

  • cl108— Enables clause108 <= RS-FEC(528,514)

  • cl74— Enables clause74 <= FC-FEC

  • disable— Disables FEC on interface

Note

 

  • The fec command is only applicable to 25G links.

  • For 10/25G dual-rate SFP, if the speed is changed from 25G to 10G, fec configuration should be removed first before speed change.