Q-Logic 16HA user manual Mixing Public and Private Devices on the Same Loop, Switch Ports, Tuning

Cable Fibre Channel Devices to the Switch

Private devices connect to Segmented Loop Ports (SL_Ports) or Translated Loop Ports (TL_Ports). Use Switch Management to configure SL or TL_Ports. Refer to Section 1 General Description for a description of SL and TL_Ports. Refer to “Configure the Ports” on page 2-18.

Mixing Public and Private Devices on the Same Loop.

You may place a Private device on a Public loop but the Private device will not be able to communicate outside the loop.

You may place a Public device on a Private loop but the Public device functions as a Private device.

Switch Ports

Any Fibre Channel port on the Switch may be an FL_Port, SL_Port, TL_Port, or a T_Port. Refer to Section 5 Multi-Chassis Fabrics for a description of T_Ports. The type of media used (fiber optic cable or copper) depends on the type of Fibre Channel adapter in the attached device and the type of GBICs used in the Switch. You may populate the Switch with any assortment of approved GBICs appropriate for your interconnection media type.

Tuning

You can optimize the system performance by connecting devices which have the greatest amount of traffic to ports on the Switch which are most efficiently inter- connected.The most efficient performance is within a group of four ports on the same Application-Specific-Integrated-Circuit (ASIC). These groups are:

•Ports 1-4

•Ports 5-8

•Ports 9-12

•Ports 13-16

When a frame source-port and destination-port are within the same port group, you will realize:

•The lowest Class 2/Class 3 frame latency

•The highest Class 2/Class 3 point-to-point bandwidth

•The highest Class 2/Class 3 aggregate bandwidth

When a frame source-port and destination-port are not within the same port group the interconnection is slightly less efficient.

SANbox-16HA Fibre Channel Switch		Installation 2-9
Installer’s/User’s Manual	59005-03 Rev. A