Users Guide

FCoE Transit

The Fibre Channel over Ethernet (FCoE) Transit feature is supported on the S5000 switch on Ethernet

interfaces. When you enable the switch for FCoE transit, the switch functions as a FIP snooping bridge.

NOTE: FIP snooping is not supported on Fibre Channel interfaces, in an S5000 switch stack, or on links

between VLT peer switches.

Topics:

• Fibre Channel over Ethernet

• Ensure Robustness in a Converged Ethernet Network

• FIP Snooping on Ethernet Bridges

• FIP Snooping in a Switch Stack

• Using FIP Snooping

• FCoE Transit Configuration Example

Fibre Channel over Ethernet

FCoE provides a converged Ethernet network that allows the combination of storage-area network (SAN) and

LAN traffic on a Layer 2 link by encapsulating Fibre Channel data into Ethernet frames.

FCoE works with the Ethernet enhancements provided in data center bridging (DCB) to support lossless (no-

drop) SAN and LAN traffic. In addition, DCB provides flexible bandwidth sharing for different traffic types, such

as LAN and SAN, according to 802.1p priority classes of service. For more information, refer to the

Data Center Bridging (DCB) chapter.

Ensure Robustness in a Converged

Ethernet Network

Fibre Channel networks used for SAN traffic employ switches that operate as trusted devices. To

communicate with other end devices attached to the Fibre Channel network, end devices log into the switch

to which they are attached.

Because Fibre Channel links are point-to-point, a Fibre Channel switch controls all storage traffic that an end

device sends and receives over the network. As a result, the switch can enforce zoning configurations, ensure

that end devices use their assigned addresses, and secure the network from unauthorized access and denial-

of-service (DoS) attacks.

FCoE Transit 389