HP E8206 ZL Quick Setup Manual page 3

Installation Notes
Transceiver Operation Notes
Revision "B" or later SFP transceivers only. This product requires revision "B" or later mini-GBICs or SFP transceivers
(product number ends with the letter "B" or later, for example J4858B or J4859C). These switches do not support revision "A"
mini-GBIC or SFP transceivers. This applies only to SFP transceivers and not SFP+ transceivers.
Use only genuine HP transceivers. Non-HP transceivers are not supported. Use of genuine products ensures your network
maintains optimal performance and reliability. Should you require additional HP transceivers, please contact an HP sales
representative or an authorized reseller. For a complete list of supported transceivers, visit the HP networking Web site at
www.hp.com/networking/support. Locate FAQs, and under Mini-GBICs and Transceivers, select one of the following:
■ HP 10-GbE Transceivers and Cables
■ HP Mini-GBICs and SFPs
Click on the first question in the "General product information" category.
Hot Swapping transceivers . The transceivers that you can install in your HP switch can be "hot swapped" — removed and
installed after the switch is receiving power. You should disconnect the network cables from the transceivers before hot
swapping them.
Best practice tip: After inserting a transceiver into a switch, the Mode LED will be on for two seconds while the transceiver
is initialized. Do not remove the transceiver until the Mode LED has turned off.
When you replace a transceiver with another transceiver of a different type and then execute the write memory command in
the switch console, the switch configures the port on the new transceiver with the default mode (speed and duplex) settings
used for the new transceiver type. The default mode for the transceivers is Auto. Note that the switch retains other port-specific
configuration settings, such as trunking, Spanning Tree Protocol (STP), and VLAN values that were configured for the previous
transceiver.
Connecting the transceivers to Devices with Fixed Configurations. For some older network devices, including some
older HP devices, the default for the Gigabit-SX, Gigabit-LX, and Gigabit-LH ports is a fixed configuration, for example 1000
Mbps/Full Duplex, or is otherwise different from these default configurations for the transceivers, which is Auto. As a result,
those devices may not connect properly to your transceiver port; you will not get a link. Because of these default configuration
and full-duplex considerations, for best operation, you should make sure that the devices connected to the transceiver ports
are also configured to Auto. At a minimum, make sure the configurations match.
Module Installation Notes
The following cases automatically result in a change to the running-configuration on your switch.
■ Replacing a module with another module of a different type and then rebooting the switch
Installing a module in a slot that has not previously been used (including when you install a module and apply power to
■
the switch for the first time)
If you want to save such changes to the startup-configuration file, use the write memory command in the switch's command
line interface. This causes the switch to use the current new hardware configuration for subsequent reboots. (The switch
always reboots from the startup-configuration file.)
One of the features of your E8200 zl switch is the ability to "hot swap" the switch modules. You can install, exchange, or remove
modules after the switch has been powered on. Whenever a module is installed during this process, it is initialized and tested
for correct operation. During this process, the switch Self Test LED is on. If you hot swap another module while the switch
is initializing and testing the first module, it is possible to cause the first module or the entire switch to be reset.
To prevent the modules or switch from being reset when you must hot swap multiple modules, follow these simple precautions:
Before removing or installing any modules, make sure that all network cables are disconnected from the module.
■
■ Do not remove any modules from the switch while the switch Self Test LED is lit.
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