Viewing Path Information; Physical Host Connection Specifications; Example Of Link Values For Non-Cascaded And Cascaded Topologies; Example Of Cascaded And Non-Cascaded Topologies - HP XP20000/XP24000 Operation Manual

Hp storageworks xp disk array mainframe host attachment and operations guide (a5951-96154, september 2010)

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Viewing path information

Depending on the microcode version installed on the storage system, the Link values displayed on

the service processor (SVP) Logical Path Status screen may appear as 3-byte values for cascaded

topologies:

The first byte corresponds to the switch address.

The second byte corresponds to the port address.

The third byte corresponds to the FC-AL port (this is a constant value in FICON).

The following figure shows how the link information is displayed in non-cascaded and cascaded

topologies.

Figure 13 Example of link values for non-cascaded and cascaded topologies

Figure 14

shows an example of cascaded and non-cascaded topologies. To confirm the logical path

of a FICON cascade connection in the SVP Maintenance − Mainframe Path − Physical Path Status

screen and Logical Path Status screen, note that:

The first byte in the 3-byte Link value on the Logical Path Status screen is the address of the switch

address at the channel site.

The first byte in the 3-byte LINK Self value on Physical Path Status screen is the address of the

switch at the disk controller (DKC) site.

To confirm the cascade path, compare these two values.

Figure 14 Example of cascaded and non-cascaded topologies

The following table lists the physical specifications associated with host connections.

FICON/zHPF and ESCON host attachment

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