HP 9304m Installation And Getting Started Manual page 102

Disabling or Re-Enabling Flow Control
You can configure full-duplex ports on a system to operate with or without flow control (802.3x). Flow control is
enabled by default.
USING THE CLI
To disable flow control on full-duplex ports on a system, enter the following:
HP9300(config)# no flow-control
To turn the feature back on:
HP9300(config)# flow-control
Syntax: [no] flow-control
USING THE WEB MANAGEMENT INTERFACE
To disable or enable flow control on full-duplex ports on a system:
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to display the configuration options.
3. Select the Port link to display the Port table.
4. Click on the Modify button next to the row of information for the port you want to reconfigure.
5. Select either Enable or Disable next to Flow Control.
6. Click Apply to save the changes to the device's running-config file.
7. 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 802.3x Gigabit Negotiation Mode
The globally configured Gigabit negotiation mode for 802.3x flow control is the default mode for all Gigabit ports.
You can override the globally configured default and set individual ports to 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.
USING THE CLI
To change the mode for individual ports, enter commands such as the following:
HP9300(config)# int ethernet 4/1 to 4/4
HP9300(config-mif-4/1-4/4)# gig-default auto-gig
This command overrides the global setting and sets the negotiation mode to auto-Gigabit for ports 4/1 – 4/4.
Syntax: gig-default neg-full-auto | auto-gig | neg-off
USING THE WEB MANAGEMENT INTERFACE
To override the global 802.3x negotiation mode for an Gigabit individual port:
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to display the configuration options.
Configuring Basic Features
4 - 23