HP StorageWorks 1606 HP StorageWorks Fabric OS 6.3.0c Release Notes (5697-0361 - Page 27

For HP StorageWorks DC SAN or DC04 SAN Directors with one or more SAN Director Switch

Page 27 highlights

• Hot-plugging a CP with a firmware level earlier than Fabric OS 6.3.0 into a DC SAN Backbone Director or DC04 SAN Director with an active DC SAN Director Switch 10/24 FCoE Blade will result in the new standby CP not coming up. • HP recommends that Converged Mode be enabled on all interfaces connected to CNAs. • When operating in Converged Mode, tagged traffic on the native VLAN of the switch interface is processed normally. The host should be configured not to send VLAN tagged traffic on the switch's native VLAN. • The CNA may lose connectivity to the 2408 FCoE Converged Network Switch/DC SAN Director Switch 10/24 FCoE Blade if the CNA interface is toggled repeatedly over time. This issue is related to the CNA; rebooting the CNA restores connectivity. • 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 expires, regardless of the interface state. • The FCoE login group name should be unique in a fabric-wide FCoE Login Management Configuration. 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 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 fosconfig -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 HP StorageWorks Fabric OS 6.3.0c Release Notes 27

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Hot-plugging a CP with a firmware level earlier than Fabric OS 6.3.0 into a DC SAN Backbone
Director or DC04 SAN Director with an active DC SAN Director Switch 10/24 FCoE Blade will
result in the new standby CP not coming up.
HP recommends that Converged Mode be enabled on all interfaces connected to CNAs.
When operating in Converged Mode, tagged traffic on the native VLAN of the switch interface
is processed normally. The host should be configured not to send VLAN tagged traffic on the
switch
s native VLAN.
The CNA may lose connectivity to the 2408 FCoE Converged Network Switch/DC SAN Director
Switch 10/24 FCoE Blade if the CNA interface is toggled repeatedly over time. This issue is related
to the CNA; rebooting the CNA restores connectivity.
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 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 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
HP StorageWorks Fabric OS 6.3.0c Release Notes
27