Users Guide
Table 22. FIP Functions
FIP Function Description
FIP VLAN discovery FCoE devices (ENodes) discover the FCoE VLANs on which to
transmit and receive FIP and FCoE trac.
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 trac 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
congured 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, congure the FIP snooping parameters, and congure CAM allocation for FCoE. When you
enable FIP snooping, all ports on the switch by default become ENode ports.
306
FCoE Transit