Transceiver Operation Notes
There are five different kinds of transceivers, including the Gigabit Stacking Transceiver that comes
in the Gigabit Stacking Kit (J4116A), that can be installed in the HP ProCurve Switch Gigabit
Transceiver gl Module (J4864A). This module can be used with your Series 4100gl Switch.
The transceivers can be “hot swapped”. That is, they can be installed, removed, and exchanged after
the Gigabit Transceiver gl Module is already installed in the switch and powered on. The details on
installing the transceivers can be found in the
Installation Guide
that comes with the transceivers
or the Gigabit Stacking Kit.
The following table lists some specifics about the way your Series 4100gl Switch handles the
configuration of the transceiver port when first installing a transceiver, and when replacing or
exchanging the transceiver.
Table 1. Considerations When Installing, Replacing, and Exchanging Transceivers
Action
Replacing a
Exchanging a
Installing a
Transceiver with
Transceiver with
Transceiver in a
Another of the
Another of a
Previously
Same Type
Different Type
Unused Slot
6
1. Verify that port configuration is satisfactory for the new
transceiver.
No
1
Yes
2
Yes
4
2. Execute
write memory
3
Not necessary for
this option.
1
Yes
Yes
1
Uses the same configuration as the previous transceiver.
2
See “Verifying a Satisfactory Port Configuration”, below.
3
See “Transceiver Changes and Switch Memory” on page 5.
4
Uses the default port settings. You should verify that these are the settings you want in the port configuration.
5
A “previously unused slot” means an empty transceiver (or module) slot that is in the factory default configuration. After
a slot has been used and
write memory
executed, you can return a slot to “unused” status by removing the transceiver
(or module) and returning the switch to its factory default configuration (by using the
erase startup-config
command
or the Clear/Reset button combination described in the switch’s
Installation and Getting Started Guide
).
Verifying a Satisfactory Port Configuration
When you replace a transceiver with another transceiver of a different type and then execute the
write memory
command, the switch configures the port on the new transceiver with the default mode
(speed and duplex) settings used for new transceiver type. However, the switch also retains other
port-specific configuration settings, such as trunking, Spanning Tree Protocol (STP), and VLAN
values. For this reason you should verify that the current configuration for a port affected by a change
in transceiver type does not create potential network problems. For example:
4
