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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

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Fibre Channel

OS10 switches with Fibre Channel (FC) ports operate in one of the following modes: Direct attach (F_Port), NPIV Proxy Gateway (NPG). In the FSB mode, you cannot use the FC ports.

F_Port

Fibre Channel fabric port (F_Port) is the switch port that connects the FC fabric to a host. S4148U-ON, MX9116n, and MX7116n switches support F_Port.

Enable Fibre Channel F_Port mode globally using the feature fc domain-ID domain-ID command in CONFIGURATION mode. 

OS10(config)# feature fc domain-id 100

NPIV Proxy Gateway

A node port (N_Port) is a port on a network node that acts as a host or storage device, and is used in FC point-to-point or FC switched fabric topologies.

N_Port ID Virtualization (NPIV) allows multiple N_Port IDs to share a single physical N_Port.

The NPIV Proxy Gateway (NPG) provides Fibre Channel over Ethernet (FCoE) to Fibre Channel (FC) bridging and conversely. Starting from OS 10.4.1, NPG supports FC to FC switching as well.

The S4148U-ON supports both, CNA and HBA, in NPG mode.

MX9116n, and MX7116n switches support NPG mode.

Enable NPG mode globally using the feature fc npg command in CONFIGURATION mode.

To change the port mode from default N_Port, use the fc port-mode F command on FC interfaces.

NOTE In a switch that is configured in NPG or F-Port mode, OS10 does not support scale profile VLAN configuration. To use scale profile configuration in NPG or F-Port mode, enable CPU-based VLAN flooding on the vfabric VLAN using the mode L3 command.

FIP snooping bridge

FCoE encapsulates FC frames over Ethernet networks. FCoE Initialization protocol (FIP) establishes FC connectivity with Ethernet ports. FSB implements security characteristics to admit valid FCoE traffic in the Ethernet networks. FIP and FCoE provide FC emulation-over-Ethernet links. OS10 switches with Ethernet ports operate in FSB.

MX9116n and MX5108n switches operate in Full Switch and SmartFabric modes. When the switch is in SmartFabric mode, it is recommended to use the untagged VLAN as 1 for FCoE-enabled interfaces. 

OS10(config)# feature fip-snooping

An Ethernet switch operating in FSB mode snoops FIP packets on FCoE-enabled VLANs and discovers the following information:

  • End nodes (E-Nodes)
  • Fibre Channel Forwarder (FCF)
  • Connections between E-Nodes and FCFs
  • Sessions between E-Nodes and FCFs
NOTE OS10 supports multiple E-Nodes in F_Port mode.
NOTE Remove all the NPIV Proxy Gateways (NPG), F-Port and vfabric related configurations from startup configuration before changing the IOM operating modes.

Using the discovered information, the switch installs ACL entries that provide security and point-to-point link emulation.

FIP snooping bridge

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