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HP StorageWorks 1606 - Extension SAN Switch Release Note page 27

Hp storageworks fos 6.3.0b release notes (5697-0360, april 2010)
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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 current Organizationally
Unique Identifier (OUI) of 00051E is 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 FOS 6.3. LAN switching is disabled by default in FOS 6.3.
The user must explicitly enable Ethernet switch service using the command fosconfig –enable
ethsw to prevent FC traffic interruption.
Upgrading from FOS 6.x to 6.3 is nondisruptive. You can enable ethsw after upgrading without
interrupting FC traffic. Upgrading the 2408 FCoE Converged Network Switch from FOS 6.1.2_cee1
to 6.3 will disrupt 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 FOS 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 FOS 6.3 to future releases will be nondisruptive to data traffic and will have beha-
vior similar to a CP failover; ethsw remains unchanged.
Downgrade from FOS 6.3 to 6.1.2_cee1 is disruptive if ethsw is enabled on FOS 6.3.
Downgrade from FOS 6.3 to 6.1.2_cee1 is nondisruptive if ethsw has never been enabled with
FOS 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.
HP StorageWorks FOS 6.3.0b Release Notes
27

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Storageworks fos 6.3.0b