Cisco Fabric Services Over Ethernet; Guidelines And Limitations For Cfs - Cisco Nexus 5600 Series Configuration Manual

Cisco Fabric Services over Ethernet

The following features are supported for CFS distribution over IP:
• One scope of distribution over an IP network:
Cisco Fabric Services over Ethernet
The Cisco Fabric Services over Ethernet (CFSoE) is a reliable state transport mechanism that you can use to
synchronize the actions of the vPC peer devices. CFSoE carries messages and packets for many features linked
with vPC, such as STP and IGMP. Information is carried in CFS/CFSoE protocol data units (PDUs).
When you enable the vPC feature, the device automatically enables CFSoE, and you do not have to configure
anything. CFSoE distributions for vPCs do not need the capabilities to distribute over IP or the CFS regions.
You do not need to configure anything for the CFSoE feature to work correctly on vPCs.
You can use the show mac address-table command to display the MAC addresses that CFSoE synchronizes
for the vPC peer link.
Note Do not enter the no cfs eth distribute or the no cfs distribute command. CFSoE must be enabled for
vPC functionality. If you do enter either of these commands when vPC is enabled, the system displays an
error message.
When you enter the show cfs application command, the output displays "Physical-eth," which shows the
applications that are using CFSoE.

Guidelines and Limitations for CFS

CFS has the following configuration guidelines and limitations:
• If the virtual port channel (vPC) feature is enabled for your device, do not disable CFSoE.
• All CFSoIP-enabled devices with similar multicast addresses form one CFSoIP fabric.
• Make sure that CFS is enabled for the applications that you want to configure.
• Anytime you lock a fabric, your username is remembered across restarts and switchovers.
• Anytime you lock a fabric, configuration changes attempted by anyone else are rejected.
• While a fabric is locked, the application holds a working copy of configuration changes in a pending
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◦ Unrestricted uncoordinated distributions: Multiple parallel distributions are allowed in the network
in the presence of an existing coordinated distribution. Unrestricted uncoordinated distributions
are allowed to run in parallel with all other types of distributions.
◦ Physical scope: The distribution spans the entire IP network.
CFSoE must be enabled for the vPC feature to work.
Note
database or temporary storage area, not in the running configuration.
Using Cisco Fabric Services
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