HP 1606 HP StorageWorks Fabric OS 6.3.2b Release Notes (5697-0777, November 20 - Page 24

Remove and reinsert the optic cable to correct this indication. • Can't read serial data in sfpshow output. Reissue the sfpshow command to resolve this issue. FCoE/CEE (2408 FCoE Converged Network Switch and DC SAN Director Switch 10/24 FCoE Blade) • Configupload and configdownload operations attempted on the 2408 FCoE Converged Network Switch fail with an error message if that switch does not have an FCoE license installed and is running a firmware version earlier than Fabric OS 6.4.0c. • The 2408 FCoE Converged Network Switch balances the FCoE bandwidth across all six port groups (each port group contains four ports). To get optimum performance for FCoE traffic HP recommends that the user distribute server CNA connections across these six port groups. • 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 being HA synchronized. To avoid this scenario, upgrade the code on the standby CP directly to match the version on the active CP. • 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 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 24