HP StorageWorks 2.32 Edge Switch - Manual (Page 85)

Edge Switch Element Manager user guide 85
Configuring ports parameters
Configure data in the following columns of the Configure Ports dialog box:
• Port #—You cannot change this box. This column identifies the port number. The port numbers
range from 0 through 23 for the Edge Switch 2/24 and 0 through 31 for the Edge Switch
2/32.
• Name—Enter a name of up to 8 characters for the port. The port names display in the Port
Properties dialog box, and elsewhere in the Element Manager, to identify the port.
NOTE: To identify port numbers for which you want to provide names, place the mouse pointer
over the ports in the
Hardware View
. As you move over a port, a label displays that identifies the
slot number where the port is installed.
• 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 select
this option, the port can support up to 60 buffer-to-buffer credits (BB_Credits) to handle link
distances up to 100 km. If this option is not enabled, the port uses the BB_Credit (1–60)
configured through the Configure Fabric 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.
Click Activate to display the 10-100Km confirmation dialog box.
NOTE: If a switch supports BB credits by port, an RX BB Credits column replaces the 10-100Km
column.
• RX BB Credit— Minimum and maximum allowable port BB credit values vary by switch. If an
invalid value is entered, an Invalid RX BB Credit error message displays. The BB credit value
cannot be changed unless the port is offline. The BB Credit value is validated as entered. Click
Activate to display the RX-BB Credit Confirmation box.
In addition to the maximum BB credit limit per port, the total BB credits allocated to all ports
cannot exceed the buffer pool size.
NOTE: Only 24-Port switches have a switch-wide buffer pool. The Configure Ports dialog box
displays the total and available buffers at the bottom of the dialog box. When information is
changed in the RX BB Credit column, this information also updates. If information is entered that
exceeds the buffer pool and Activate is clicked, an error message displays. Also, ports for the
24-Port switches can be individually configured between 2-12, with a total number of port credits
of 150.