EMULEX MODEL 355 SAN STORAGE SWITCH | CHAPTER 3: SWITCH MANAGEMENT |
USER’S GUIDE |
Diagnostics
The following settings are available.
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. |
|
|
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.
Figure 3-11: Switch Files page
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