Fip Snooping; Enabling And Disabling Fip Snooping - Dell M6220 User Configuration Manual

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FIP Snooping

The FCoE Initialization Protocol (FIP) is used to perform the functions of

FC_BB_E device discovery, initialization, and maintenance. FIP uses a

separate EtherType from FCoE to distinguish discovery, initialization, and

maintenance traffic from other FCoE traffic. FIP frames are standard

Ethernet size (1518 Byte 802.1q frame), whereas FCoE frames are a

maximum of 2240 bytes. FIP snooping is a frame inspection method used by

FIP Snooping Bridges to monitor FIP frames and apply policies based upon

the L2 header information in those frames.

FIP snooping allows for:

Auto configuration of Ethernet ACLs based on information in the

Ethernet headers of FIP frames.

Emulation of FC point-to-point links within the DCB Ethernet network.

Enhanced FCoE security/robustness by preventing FCoE MAC spoofing.

The role of FIP snooping-enabled ports on the switch falls under one of the

following types:

Perimeter or Edge port (connected directly to a Fibre Channel end node or

Fibre Channel forwarder (FCF) facing port (that receives traffic from

FCFs targeted to the ENodes).

The PowerConnect M8024-k FIP Snooping Bridge feature supports the

configuration of the perimeter port role and FCF-facing port roles and is intended

for use only at the edge of the switched network.

The default port role in an FCoE-enabled VLAN is as a perimeter port. FCF-

facing ports are configured by the user.

When FIP snooping is globally enabled on the switch, FC-BB-5 Annex D

ACLs are installed on the switch, and FIP frames are snooped. FIP snooping

will not allow FIP or FCoE frames to be forwarded over a port until the port is

operationally enabled for PFC. VLAN tagging must be enabled on the

interface in order to carry the dot1p values through the network. Establishing

Configuring Data Center Bridging Features

M8024 M6348 M8024-k