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This section includes the following topics: Using FabricPath and conversational MAC address learning, the device has to learn far fewer MAC addresses, which results in smaller, more manageable MAC tables. Conversational learning can be applied to both FabricPath (FP) and CE VLANs.
#Bidirectional mac address learning series
This FabricPath Layer 2 IS-IS is a separate process than Layer 3 IS-IS.īeginning in the Cisco NX-OS Release 5.1 and when you use the F Series module, Cisco supports the conversation-based MAC learning schema. There is no need to run the Spanning Tree Protocol (STP) it is a purely Layer 2 domain. With FabricPath, you use the Layer 2 intermediate System-to-Intermediate System (IS-IS) protocol for a single control plane that functions for unicast, broadcast, and multicast packets. Finally, FabricPath is very useful in high-performance, low-latency computing. FabricPath also allows LAN extensions across data centers at Layer 2, which is useful in disaster recovery operations, as well as clustering applications such as databases. The FabricPath encapsulation facilitates MAC mobility and server virtualization, which means that you can physically move the Layer 2 node but retain the same MAC address and VLAN association for the virtual machine. Instead, you can use FabricPath across data centers, some of which have only Layer 2 connectivity, with no need for Layer 3 connectivity and IP configurations. In a FabricPath network, you do not need to run the Spanning Tree Protocol (STP) with its blocking ports. The FabricPath network still delivers packets on a best-effort basis (which is similar to the Classical Ethernet network), but the FabricPath network can use multiple paths for Layer 2 traffic.
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FabricPath Switching Example Configuration.Displaying and Clearing FabricPath Switching Statistics.Guidelines and Limitations for FabricPath Switching.Licensing Requirements for FabricPath Switching.This chapter includes the following sections:
#Bidirectional mac address learning how to
This chapter describes how to configure FabricPath switching on the Cisco NX-OS devices. Note You must have an F Series module installed in your Cisco Nexus 7000 Series chassis in order to run FabricPath and conversational learning. Guidelines and Limitations for FabricPath SwitchingĮnabling the FabricPath Feature Set on the VDC on the deviceĭisabling the FabricPath Feature Set on the VDCĬonfiguring the MAC Learning Mode for CE VLANs (Optional)Ĭonfiguring the FabricPath Timers (Optional)ĭisabling FabricPath Graceful Merges (Optional)ĭisplaying and Clearing FabricPath Switching StatisticsįabricPath Switching Example Configurationįeature History for Configuring FabricPath Switching Using the CLI Licensing Requirements for FabricPath Switching Interoperation between the M Series and the F Series Modules Conflict Resolution and Optional FabricPath Tunings