Changing The Default Gigabit Negotiation Mode - HP ProCurve 9304M Installation And Configuration Manual

NOTE: You do not need to adjust for Daylight Savings Time. You enable or disable Daylight Savings Time
separately in the following step.
4. Select Disable or Enable next to Daylight Saving Time to enable or disable it.
5. Enter the month, day, and year in the Date fields. You must enter the year as four digits.
6. Enter the hour, minute, and seconds in the Time fields.
7. Select AM or PM.
8. Click Apply to save the changes to the device's running-config file.
9. Select the Save link at the bottom of the dialog. Select Yes when prompted to save the configuration change
to the startup-config file on the device's flash memory.

Changing the Default Gigabit Negotiation Mode

You can configure the default Gigabit negotiation mode to be one of the following:
• Negotiate-full-auto – The port first tries to perform a handshake with the other port to exchange capability
information. If the other port does not respond to the handshake attempt, the port uses the manually
configured configuration information (or the defaults if an administrator has not set the information). This is
the default.
• Auto-Gigabit – The port tries to perform a handshake with the other port to exchange capability information.
• Negotiation-off – The port does not try to perform a handshake. Instead, the port uses configuration
information manually configured by an administrator.
Although the standard for 100BaseTX ports provides an option for a negotiating port to link with a non-negotiating
port, the 802.3x standard for Gigabit ports does not provide this option. As a result, unless the ports at both ends
of a Gigabit Ethernet link use the same mode (either auto-Gigabit or negotiation-off), the ports cannot establish a
link. An administrator must intervene to manually configure one or both sides of the link to enable the ports to
establish the link.
HP Chassis software provides a solution by changing the default negotiation behavior for Gigabit Ethernet ports.
The new default behavior allows a port to establish a link with another port whether the other port is configured for
auto-Gigabit or negotiation-off. By default, Gigabit Ethernet ports first attempt auto-Gigabit. If auto-Gigabit does
not succeed (typically because the port at the other end is not configured for auto-Gigabit), the port switches to
negotiation-off.
Backward Compatibility
When you upgrade a Chassis device that is running software older than 05.2.00, the new software makes
modifications to the running-config and startup-config files to ensure that the negotiation settings remain
unchanged for the installed device. For new devices running 05.2.00, the default for all Gigabit Ethernet ports is
negotiate-full-auto.
To provide the backward compatibility, the software places a line in the running-config file to identify the software
version that generated the file. For software release 05.2.00, the version line is as follows: "version 05.2.00".
When you save configuration changes to the startup-config file, the software assumes, based on the presence of
the version line in the running-config file, that the device is running software release 05.2.00 or later, which
contains the change to the Gigabit Ethernet negotiation default.
If the device already has a startup-config file when you update to software release 05.2.00, the software adds the
following command to the startup-config file: gig-default neg-off. This command sets the global negotiation
mode to negotiation-off, the default behavior in software releases earlier than 05.2.00. By setting the default
mode to negotiation-off, the new software ensures that the device's Gigabit Ethernet links continue to operate as
before. (Although you cannot set a global default for Gigabit Ethernet negotiation in software releases earlier than
05.2.00, the implicit default behavior is negotiation-off.)
If the startup-config file contains the auto-gig command to configure individual ports for auto-Gigabit, the
command is changed to the new format, gig-default auto-gig. Thus, the ports continue to use the auto-Gigabit
setting.
Configuring Basic Features
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