HP StorageWorks Fabric OS 6.3.1c Release Notes (5697-0509 September 2010 - includes all 6.3.1x versions)

• Although the 2408 FCoE Converged Network Switch/DC SAN Director Switch 10/24 FCoE
Blade support the configuration of multiple CEE maps, HP recommends that you use only one CEE
map on all interfaces connected to CNAs. Additionally, CEE maps are not recommended for use
with non-FCoE traffic. QoS commands are for interfaces carrying non-FCoE traffic.
• HP recommends that Spanning Tree Protocol and its variants be disabled on CEE interfaces that
are connected to a server.
• The Fabric Provided MAC Address (FPMA) and Fibre Channel Identifier (FCID) assigned to a
VN_Port cannot be associated with any front-end CEE port on which the FLOGI was received.
• LLDP neighbor information may be released before the timer expires when DCBX is enabled on a
CEE interface. This occurs only when the CEE interface state changes from active to any other
state. When the DCBX is not enabled, the neighbor information is not released until the timer ex-
pires, regardless of the interface state.
• The FCoE login group name should be unique in a fabric-wide FCoE Login Management Config-
uration. The merge logic is designed to modify the login group name during merge when login
group names in participating configurations conflict with each other. The Organizationally Unique
Identifiers (OUI) of 00051E or 000533 (phased in beginning in April 2010) are being used by
Brocade while assigning the WWNs to 2408 FCoE Converged Network Switches, DC SAN
Backbone Directors, and DC04 SAN Directors, which would make only the last three bytes different
for any two 2408 FCoE Converged Network Switches, DC SAN Backbone Directors, or DC04
SAN Directors. Considering this assignment method, the merge logic would rename the login
group by including the last three bytes of the WWN in the login group name, so that they are
unique in the merged configuration.
• For switches having different OUI indexes from the eight assigned to Brocade (for example, 00051E
and 006069), WWNs can differ in more than three bytes. In this case, after a normal merge and
a rename, per the logic described above, login group names can be the same for WWNs differing
only in OUIs. The merge logic would drop one of the login groups to satisfy the requirement to
keep the login group name unique in the fabric-wide configuration.
• Ethernet switch services must be explicitly enabled using the command fosconfig –enable
ethsw before powering on a DC SAN Director Switch 10/24 FCoE Blade. Failure to do so causes
the blade to be faulted (fault 9).
• To support nondisruptive firmware upgrades on the DC SAN Backbone Director/DC04 SAN
Director, a new service, ethsw, is being introduced to enable Ethernet switching on the DC SAN
Director Switch 10/24 FCoE Blade in Fabric OS 6.3. LAN switching is disabled by default in
Fabric OS 6.3. The user must explicitly enable Ethernet switch service using the command foscon-
fig –enable ethsw to prevent FC traffic interruption.
• Upgrading DC SAN Backbone Director/DC04 SAN Director with DC SAN Director 10/24 FCoE
blade from Fabric OS 6.x to 6.3 is nondisruptive. You can enable ethsw after upgrading without
interrupting FC traffic. Upgrading firmware on the 2408 FCoE Converged Network Switch disrupts
the FC traffic.
• For HP StorageWorks DC SAN or DC04 SAN Directors with one or more SAN Director Switch
10/24 FCoE blades installed, downgrading or upgrading the Fabric OS 6.3 firmware to another
version disrupts traffic through the blades. HA Failover of CP blades in either of these directors
disrupts traffic through the 10/24 FCoE blades.
• Upgrades from Fabric OS 6.3 to future releases will be nondisruptive to data traffic and will have
behavior similar to a CP failover; ethsw remains unchanged.
• Downgrade from Fabric OS 6.3 to 6.1.2_cee1 is disruptive if ethsw is enabled on Fabric OS
6.3.
• Downgrade from Fabric OS 6.3 to 6.1.2_cee1 is nondisruptive if ethsw has never been enabled
with Fabric OS 6.3.
• Connecting a 2408 FCoE Converged Network Switch to an FCR-capable switch with fcrbcast
config enabled will cause a storm of broadcast traffic, resulting in termination of iswitchd.
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