Users Guide

The following table lists the FIP functions.
Table 25. FIP Functions
FIP Function Description
FIP VLAN discovery FCoE devices (ENodes) discover the FCoE VLANs on which to
transmit and receive FIP and FCoE traffic.
FIP discovery FCoE end-devices and FCFs are automatically discovered.
Initialization FCoE devices learn ENodes from the FLOGI and FDISC to allow
immediate login and create a virtual link with an FCoE switch.
Maintenance A valid virtual link between an FCoE device and an FCoE switch is
maintained and the LOGO functions properly.
Logout On receiving a FLOGI packet, FSB deletes all existing sessions from
the ENode to the FCF.
Figure 38. FIP Discovery and Login Between an ENode and an FCF
FIP Snooping on Ethernet Bridges
In a converged Ethernet network, intermediate Ethernet bridges can snoop on FIP packets during the login process on an FCF. Then,
using ACLs, a transit bridge can permit only authorized FCoE traffic to be transmitted between an FCoE end-device and an FCF. An
Ethernet bridge that provides these functions is called a FIP snooping bridge (FSB).
On a FIP snooping bridge, ACLs are created dynamically as FIP login frames are processed. The ACLs are installed on switch ports
configured for ENode mode for server-facing ports and FCF mode for a trusted port directly connected to an FCF.
Enable FIP snooping on the switch, configure the FIP snooping parameters, and configure CAM allocation for FCoE. When you enable FIP
snooping, all ports on the switch by default become ENode ports.
Dynamic ACL generation on the switch operating as a FIP snooping bridge function as follows:
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FIP Snooping