HP Surestore 64 - Director Switch User Manual page 128

Configuring the Director
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Note: To identify port numbers for which you want to provide names, place the
cursor over the ports in the Hardware View. As you move over a port, a message
displays that identifies the slot number where the port is installed.
To name ports in FICON management style, use the Configure Addresses
dialog box.
Blocked (open systems management style only)—Placing a check mark in
the check boxes of this column blocks the operation of the port.
To block ports in FICON management style, use the Configure Addresses
dialog box.
10–100Km—This column is for extended distance buffering. You can enable
extended distance for a port even if it is not an extended distance port.
However, enabling extended distance buffering on a port disables the ability
for the port to send broadcast traffic. When you choose this option, the port
can support up to 60 buffer-to-buffer credits (BB_Credits) to handle link
distances up to 100 km. This enables the port to process 2K frames from
attached devices. If this option is not enabled, the port uses the BB_Credit
(1–60) configured through the Operating Parameters dialog box.
If a device is connected and logged in to the fabric when extended distance is
enabled or disabled on the corresponding port, the switch will send OLS for 5
ms to force the device to log in again and obtain the new BB_Credit value set
for the port.
LIN Alerts—A link incident (LIN) is a problem detected on a fiber optic link,
such as the loss of light or invalid sequences. When a problem occurs, a LIN
alert is sent to the Link Incident Log in the switch Product Manager. LIN
alerts warn you that there is a link incident being detected through a port
connection.
Place or remove check marks in the check boxes in this column to enable or
disable link incident alerts. The factory default is to enable LIN alerts.
A link incident causes a yellow attention indicator (triangle) to display for the
port in the Hardware View, Port Card View, and in the alert column of the
Port List View. Once a LIN occurs, you must acknowledge it by choosing the
Clear Link Incident Alert option from the right-click menu for the port
(Hardware View). A description of the alert displays in the Link Incident
field of the Port Properties dialog box (refer to Figure 23 on page 85).
Director Product Manager User Guide