HP 1606 HP B-series Fabric OS 6.4.1b Release Notes (5697-0886, March 2011-incl - Page 27

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

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• 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 - tagged frames coming with a VLAN tag equal to the configured native VLAN are dropped. • 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 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 fosconfig -enable ethsw command before powering on a DC SAN Director Switch 10/24 FCoE Blade. Failure to do so causes the blade to be faulted (fault 9). Users can enable ethsw after upgrading firmware without FC traffic interruption. • Upgrading firmware on the 2408 FCoE Converged Network Switch to Fabric OS 6.4.x, or downgrading from Fabric OS 6.4.x, disrupts the FC traffic through the switch. • 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 6.4 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. • 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. • When rebooting a DC SAN director or DC04 SAN director with DC SAN 10/24 FCoE blade, Qlogic CNA and LSAN zoning, the switch becomes unresponsive for a period of time. This is due to the CNA sending excessive MS queries to the switch. Important notes and recommendations 27

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•
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 - tagged frames coming with a VLAN tag equal to the configured native
VLAN are dropped.
•
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
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
fosconfig
–
enable ethsw
command before powering on a DC SAN Director Switch 10/24 FCoE Blade. Failure to do
so causes the blade to be faulted (fault 9). Users can enable
ethsw
after upgrading firmware
without FC traffic interruption.
•
Upgrading firmware on the 2408 FCoE Converged Network Switch to Fabric OS 6.4.x, or
downgrading from Fabric OS 6.4.x, disrupts the FC traffic through the switch.
•
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 6.4 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.
•
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
.
•
When rebooting a DC SAN director or DC04 SAN director with DC SAN 10/24 FCoE blade,
Qlogic CNA and LSAN zoning, the switch becomes unresponsive for a period of time. This
is due to the CNA sending excessive MS queries to the switch.
Important notes and recommendations
27