Restrictions and guidelines: CFD configuration

When you configure CFD, follow these restrictions and guidelines:

• Configure CC before you use the MEP ID of the remote MEP to configure other CFD functions. This restriction does not apply when you use the MAC address of the remote MEP to configure other CFD functions.

• Do not configure a Layer 2 aggregate interface as an IPP if the following conditions exist:

  • The Layer 2 aggregate interface exists between an inward-facing MEP and a remote MEP.

  • The MAC address of the remote MEP is used for CFD functions.

  For information about IPPs, see DRNI configuration in Layer 2—LAN Switching Configuration Guide.

• Typically, a port blocked by the spanning tree feature cannot receive or send CFD messages except in the following cases:

  • The port is configured as an outward-facing MEP.

  • The port is configured as a MIP or inward-facing MEP, which can still receive and send CFD messages except CCM messages.

  For more information about the spanning tree feature, see Layer 2—LAN Switching Configuration Guide.