HP Brocade 4Gb SAN Switch for HP BladeSystem c-Class - Manual (Page 66)

66 Managing your fabrics, switches, and ports
3. Perform of the following, depending on the type of switch:
• For Core Switch 2/64 and SAN Director 2/128, select the slot subtab that corresponds to the
correct slot for the logical switch.
• For HP StorageWorks SAN Switch 2/8V, SAN Switch 2/16V, SAN Switch 2/32, and SAN Switch
4/32, proceed directly to the next step.
4. To enable trunking mode on a port, select the check box in the Enable Trunking column that
corresponds to the port you want to trunk.
To disable trunking mode on a port, un-select the box.
5. Click Apply.
Managing trace dumps
A trace dump is a snapshot of the running behavior within the HP StorageWorks switch. The dump can be
used by developers and troubleshooters at HP to help understand what might be contributing to a specific
switch behavior when certain internal events are seen. For example, a trace dump can be created each
time a certain error message is logged to the system error log. Developers can then examine what led up
to the message event by studying the traces.
Tracing is always on. As software on the switch executes, the trace information is placed into a circular
buffer in system RAM. Periodically, the trace buffer is frozen and saved. This saved information is a trace
dump.
A trace dump is generated when:
• It is triggered manually (use the
traceDump
command)
• A critical-level log message occurs
• A particular log message occurs (use the
traceTrig
command to set up the conditions for this)
• A kernel panic occurs
• The hardware watchdog timer expires
(For information about the
traceDump
and
traceTrig
commands, refer to the HP StorageWorks Fabric
OS 4.x command reference guide.)
The trace dump is maintained on the switch until either it is uploaded to the FTP host or another trace
dump is generated. If another trace dump is generated before the previous one is uploaded, the previous
dump is overwritten.
When a trace dump is generated, it is automatically uploaded to an FTP host, if automatic FTP uploading
is enabled.
Using the Trace tab of the Switch Admin module, you can view and configure the trace FTP host target,
enable or disable automatic trace uploads, and manually upload a trace dump (see Figure 16 ).