HP StorageWorks 4/16 HP StorageWorks Fabric OS 5.3.1a release notes (AA-RWEYJ- - Page 15

Topic Access Gateway Mode Port State portcfgdefault command function change for the Brocade 4Gb SAN Switch for HP c-Class BladeSystem Update to Brocade 4Gb SAN Switch for HP c-Class BladeSystem instructions. Zoning considerations with FC4-48 Blade Description When a disabled port on a switch in Access Gateway mode is connected to a configured loop HBA, the port state alternates between Nosync and Insync. The switchShow command displays the state of the remote HBA port that is continuously attempting to reconnect to the disabled port. Access Gateway mode is not supported in the p-Class BladeSystem if there are two half-height servers (BL3xp) in the same sleeve (Server Slot 1 and 9, or 2 and 10, etc). That configuration requires Fibre Channel Arbitrated Loop operation, which conflicts with Access Gateway mode. There is no such restriction with c-Class, since no servers require Fibre Channel Arbitrated Loop. Access Gateway supports only FCP initiator connections on the F_Ports. Note that cascading Access Gateway devices or connecting FCP targets, loop devices, or FICON channel/control units on the F_Ports are not supported. Beginning with Fabric OS 5.2.1b, the portcfgdefault command now resets the configuration to HP factory default port settings. After connecting to the Brocade 4Gb SAN Switch via the Onboard Administrator (OA) connect command, you will be in the switch CLI prompt. To return to the OA serial prompt: • Type Exit to log out of the switch. • Press Shift-Ctrl-underscore (escape sequence) to return to the OA prompt. B-Series switches running pre-5.2.0 firmware do not accept zone databases with Domain, Port Index, references to ports higher than 255. Zoning in Fabric OS 5.2.0 and later, therefore, do not allow a Domain, Port Index entry for ports above 255 to be created unless all switches in the fabric are at Fabric OS 5.2.0 or later versions. Once such an entry has been put into the zone database, an attempt to connect a pre-Fabric OS 5.2.0 switch to the fabric results in that switch being segmented with a Zone Mismatch segmentation reason. Any zoning that is already in use can continue to be used. However, in Fabrics containing pre-Fabric OS 5.2.0 switches, if new devices are added on the upper 16 ports (ports 32-47) of the FC4-48 port Blade, then World Wide Name (WWN) zoning has to be used for those devices. If there is an existing Domain Port Index zone that connects to ports 32-47, HP recommends that you transform just that zone to WWN zoning. This would minimize the likelihood of rebuilding the entire fabric. Fabrics containing only Fabric OS 5.2.0 and later switches have no zoning limitation. HP StorageWorks Fabric OS 5.3.1a release notes 15