HP StorageWorks 1606 HP StorageWorks Fabric OS 6.3.0 release notes (5697-0358, - Page 29

• A VE/VEX tunnel and E/EX FC port cannot connect to the same domain at the same time. • The recommended Keep Alive Timeout must be the same on the tunnel and circuits on the switches on both sides of a link. • The 1606 Extension SAN Switch and DC SAN Director Multi-protocol Extension Blade cannot receive a ping from an external device (for example, a Windows PC). • Latency measurements supported on FCIP tunnels (tested limit under Fabric OS 6.3.0): • 1 GbE with 200 ms round-trip time and 1% loss • 10 GbE with 50 ms round-trip time and 0.1% loss • The 1606 Extension SAN Switch supports optical and copper media types on GE0 and GE1 interfaces. Copper media is the default on GE0/GE1 ports and does not support autosense functions. FCoE/CEE (2408 FCoE Converged Network Switch and DC SAN Director Switch 10/24 FCoE Blade) • 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 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 HP StorageWorks Fabric OS 6.3.0 release notes 29