Loop Management Software
13
Automatic Loop Reconfiguration
AutoLIP (Originate LIP F7 on insertion) automatically reconfigures the loop when a hub
port becomes active.
Any change in loop membership requires loop reconfiguration. Normally, loop
reconfiguration is triggered when a device transmitting an LIP F7 F7 sequence is inserted
into a loop.
When a port comes out of bypass, it automatically inserts LIP F7 F7 into the loop until
the device attached to the port sends a LIP sequence other than LIP F8.
When two hubs are cascaded, there is no “device” to sense insertion. The Fibre Channel
Hub uses the AutoLIP option, so that it can insert the necessary LIP F7 sequence when it
is connected to another hub.
Also, after a port comes out of bypass and before the port is reinserted into the loop, the
hub port automatically inserts LIP F7 into the loop until a LIP sequence (other than LIP
F8) is received.
Loop Management Software
The Fibre Channel Hub software provides statistics for each port detailing the number of
invalid transmission words, comparative error rates, and port down counts. You can use
the management tools to reconfigure the loop remotely to optimize performance or to
diagnose and isolate failures. You can view port operation statistics, force-bypass a port,
join two loops or separate a loop into two loops, change passwords, or perform other
management tasks.
Included with the Fibre Channel Hub are these interfaces for managing loops:
•
HTML interface, compatible with most standard Web browsers
•
command-line interface for use via a local console or Telnet connection
•
SNMP agent interface
For complete information on software configuration and management of the hub, see
Chapter 4, “Setting Up Local or Remote Hub Management,” and Chapter 5, “Fibre
Channel Hub Operation and Management.”
