Emulex 355 - Manual (Page 36)

E MULEX M ODEL 355 SAN S TORAGE S WITCH
U SER ’ S G UIDE C HAPTER 3: S WITCH M ANAGEMENT
E MULEX C ORPORATION 33
P ART N UMBER 00041411-002 R EV . B
Diagnostics
The following settings are available.
Managing Firmware and Configuration Files
The Switch Files page displays information on the switch’s firmware and configuration files.
To view the firmware and configuration files, click Switch > Files.
The Switch Files page appears.
Setting Description
Port Control The method for controlling a port. Options include:
• auto – the default setting. The switch will automatically insert a
port based on policy settings. This prevents the insertion of
incompatible ports, which may cause disruption.
• bypass – removes a port from the network. Use this mode to
keep a device out of an initialization cycle when troubleshooting.
• extLoopback – removes a port from the network and routes the
port's receive signal back through the port's transmitter. Use this
mode to isolate a specific zone for troubleshooting or to test a
transceiver’s circuitry and attached media from the node end.
• insert – allows ports whose transceivers cannot derive a valid
clock or "K" character (Ordered Set) to join a zone. Use this
mode cautiously – devices without valid characters may put bad
data into a zone, causing the zone to go down.
Bypass on Clock Delta The switch determines the relative frequency of the signal being
received by a port to the internal switch clock. The result of this
test allows the determination of how far apart in frequency the
switch’s clock is in relation to the clock of the received signal – the
clock delta. If the clock delta exceeds a set threshold, the switch is
notified and the port may be bypassed if necessary. Typically,
clock drift is slow enough to allow the removal and replacement of
a defective part before the defective part begins to affect system
performance.
Figure 3-11: Switch Files page