Converged Enhanced Ethernet Administrator’s Guide 11
53-1002163-02
FCoE Initialization Protocol 1
DRAFT: BROCADE CONFIDENTIAL
•Commit and abort—Defined logingroup changes can be aborted with no effect on existing
sessions. The Brocade FCoE hardware does not apply the configurations to new sessions until
the changes are committed. Once defined, logingroups are committed. The Brocade FCoE
hardware immediately uses the new configuration.
•No traffic disruption—Changing the logingroup without committing the changes does not affect
existing sessions. After committing the changes, ENodes that were already logged in continue
to function even when that member is removed from the logingroup. New logins from the
former member are rejected.
Name server
The Brocade FCoE hardware name server function operates as follows:
•ENode login and logout to and from the Brocade FCoE hardware updates the name server in
the FC fabric. The Brocade FCoE hardware maintains the MAC address to WWN/PID mappings.
•ENode login and logout—When an ENode login occurs through any means (FIP FLOGI, FIP
FDISC, FCoE FLOGI, or FCoE FDISC), an entry is added to the name server. When an ENode
logout occurs through any means (FIP LOGO, FCoE LOGO, or implicit logout), the entry is
removed from the name server.
•ENode data—The Brocade FCoE hardware maintains a VN_port table. The table tracks the
ENode MAC address, FIP login parameters for each login from the same ENode, and WWN/PID
mappings on the FC side. You can display the VN_port table with the fcoe -loginshow port
command.
FC zoning
The Brocade FCoE hardware FC zoning operates as follows:
•The virtual devices created by the Brocade FCoE hardware on behalf of the ENodes are subject
to FC zoning. An ENode is only allowed to access devices in the same zones. Administrative
Domains (ADs) are not supported in the Fabric OS v7.0.0 release.
•ENodes can access FC devices in the same zones— FC devices that are not in the same zones
cannot be accessed. Zone members can overlap in multiple zones (that is, overlapping zones).
Zoning changes are immediately enabled by hardware enforced zoning.
•ENodes can access all FC devices with no zoning—ENodes can access all FC devices in the
fabric when cfgdisable is issued and Default Zone is set to All Access Mode.
•Field replacement—When a Brocade FCoE hardware is replaced in the field, you can perform a
configdownload on a previously saved configuration. No zoning change is required.
Registered State Change Notification (RSCN)
The Brocade FCoE hardware RSCN function operates as follows:
•RSCN events generated in the FC fabric are forwarded to the ENodes. RSCN events generated
on the FCoE side are forwarded to the FC devices. CEE is not aware of RSCN events.
•Device RSCN—An RSCN is generated to all registered and affected members when an ENode
either logs in or logs out of an FCF through any means. An RSCN is generated when an FC
N_port device either logs in or logs out of the FC fabric.