HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 24

Viewing path information, Physical host connection specifications

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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 . Physical host connection specifications The following table lists the physical specifications associated with host connections. 24 FICON/zHPF and ESCON host attachment

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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
.
Physical host connection specifications
The following table lists the physical specifications associated with host connections.
FICON/zHPF and ESCON host attachment
24