HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.2 administrator guide (5697-0 - Page 405

Physical chassis 1 Physical chassis 2 IFL E Logical switch 1 E ISL E Logical switch 5 F B (Default logical switch) (Default logical switch) Fabric ID 128 Fabric ID 128 Logical switch 2 Fabric ID 1 Logical switch 6 Fabric ID 1 Edge fabric FID 20 Allows XISL use Allows XISL use C ISL E F Logical switch 3 E E Logical switch 7 Fabric ID 15 E Fabric ID 15 IFL IFL EX Logical switch 4 EX Logical switch 8 EX A (Base switch) Fabric ID 8 E (Base switch) E Fabric ID 8 XISL E E ISL FC router Fabric ID 4 Figure 70 Backbone-to-edge routing across base switch using FC router in legacy mode Upgrade and downgrade considerations for FC-FC routing When you upgrade to Fabric OS 6.2.0 or later, EX_Ports remain functional and you can continue to perform all FC router operations on the switch. HP recommends that you save your FC-FC routing configuration (using the configUpload command) before performing any downgrades. Fabric OS 6.0.x and earlier releases do not support EX_Ports on 8-Gb/s ports. Downgrades are not allowed on platforms with 8-Gb/s EX_Ports. For further instructions on downgrading, see Chapter 8, "Installing and maintaining firmware" on page 213. How replacing port blades affects EX_Port configuration If you replace a B-Series Multi-Protocol Router Blade with an 8-Gb/s port blade, the EX_Port configuration remains the same for the first 16 ports on the 8-Gb/s port blade. For all other ports on the blade, the EX_Port configuration is cleared. No ports are persistently disabled. If you replace an 8-Gb/s port blade with a B-Series Multi-Protocol Router Blade, the EX_Port configuration remains the same for all ports on the B-Series Multi-Protocol Router Blade. All ports are persistently disabled. If you replace an 8-Gb/s port blade with another 8-Gb/s port blade, the EX_Port configuration remains the same. Interoperability with legacy FCR switches A legacy FCR switch is a switch running Fabric OS 5.1.x or earlier or XPath OS. The following interoperability considerations apply when administering legacy FCR switches in the same backbone fabric as switches supporting Fabric OS 5.2.0 or later: • When a legacy switch is connected to the backbone fabric, a RASLog message is issued indicating that the capability of the backbone fabric is lower because legacy FCR switches support lower capability limits. • If an XPath OS switch joins the backbone fabric, a RASLog message is issued indicating that the backbone-to-edge fabric is not supported with the XPath OS switch. For further information on these RASLog messages, see the FCR chapter in the Fabric OS Message Reference. Fabric OS 6.2 administrator guide 403