4-10
Compaq StorageWorks SAN Switch 16 Installation and Hardware Guide
Compaq Confidential – Need to Know Required
Writer: Hilary Stead Project: Compaq StorageWorks SAN Switch 16 Installation and Hardware Guide Comments:
Part Number: EK-BCP28-IA / 161356-001 File Name: E-CH4 FRONT PANEL SWITCH MANAGEMENT.DOC Last Saved On: 9/30/99 11:27 AM
VC-Encoded Address Mode
When set, frame source and destination addresses use an address format
compatible with some first-generation switches.
Per-Frame Route Priority
In addition to the eight virtual channels used in frame routing priority, support
is also available for per-frame based prioritization when this value is set.
When set, the virtual channel ID is used in conjunction with a frame header to
form the final virtual channel ID.
Virtual Channels
You can tune the switch for a specific application. The first two channels are
not available because the switch reserves them for its internal functions.
NOTE:
The default virtual channel settings are already optimized for switch performance.
Changing the default values, if properly selected, can improve switch performance
somewhat, but can also severely degrade switch performance. Do not change these
settings without fully understanding the effects.
VC Priorities
To view the priorities assigned to each virtual channel, press <Enter> while
VC
Priorities
displays on the front panel. The first two numbers are fixed, and
display a 0 and a 1, respectively. The 0 in the first position indicates that this
virtual channel, assigned to handle internal switch traffic, has the highest
priority. The 1 in the second position shows the priority assigned by the virtual
channel link control. Positions three through eight can only be a 2 or 3,
indicating that the channel gives priority to Class 2 and Class 3 frame traffic.
Disable Fan Frames
This command specifies whether fabric address notification (FAN) frames are
sent to notify public loop devices of their node ID and address. To disable
FAN frames, press <Enter> while
Disable Fan Frames
displays on the front panel.
Set the value to 1 and FAN frames will not be sent. Set the value to 0 to enable
FAN frames.
