Optimizing Traffic Flow with Port Controls, Port Trunking, and Filters

Viewing Port Status and Configuring Port Parameters

Status or

Description

Parameter

 

 

 

100/1000Base-T ports:

•Auto (default): Senses speed and negotiates with the port at the other end of the link for port operation (MDI-X or MDI).

To see what the switch negotiates for the Auto setting, use the CLI show interfaces brief command or the “3. Port Status” option under “1. Status and Counters” in the menu interface.

•Auto-100: Uses 100 Mbps and negotiates with the port at the other end of the link for other port operation features.

•Auto-1000: Uses 1000 Mbps and negotiates with the port at the other end of the link for other port operation features.

•100Hdx: Uses 100 Mbps, half-duplex.

•100Fdx: Uses 100 Mbps, Full-Duplex

Notes:

•Changing the port speed on a transceiver port requires a reboot of the switch.

•Ensure that the device attached to the port is configured for the same setting that you select here. Also, if “Auto” is used, the device to which the port is connected must also be configured to “Auto” and operate in compliance with the IEEE 802.3ab “Auto Negotiation” standard for 1000Base-T networks.

Gigabit fiber-optic ports (Gigabit-SX and Gigabit-LX):

•1000FDx: 1000 Mbps (1 Gbps), Full Duplex only

•Auto (default): The port operates at 1000FDx and auto-negotiates flow control with the device connected to the port.

Flow Control • Disabled (default): The port will not generate flow control packets, and drops any flow control packets it receives.

•Enabled: The port uses 802.3x Link Layer Flow Control, generates flow control packets, and processes received flow control packets.

With the port mode set to Auto (the default) and Flow Control enabled, the switch negotiates Flow Control on the indicated port. If the port mode is not set to Auto, or if Flow Control is disabled on the port, then Flow Control is not used.

Group (menu)

Menu Interface: Specifies the static trunk group, if any, to which a port belongs.

or

 

Trunk Group

CLI: Appears in the show lacp command output to show the LACP trunk, if any, to which a port belongs.

(CLI)

Note: An LACP trunk requires a full-duplex link. In most cases, HP recommends that you leave the

 

 

port Mode setting at Auto (the default). See the LACP Note on page 9-12.

 

For more on port trunking, see “Port Trunking” on page 9-10.

 

 

Type

This parameter appears in the CLI show trunk listing and, for a port in a trunk group, specifies the type

 

of trunk group. The default Type is passive LACP, which can be displayed by using the CLI show lacp

 

command.

 

For more on port trunking, see “Port Trunking” on page 9-10.

 

 

Broadcast

Reduces the bandwidth available for broadcast and multicast traffic on all ports on the switch. Any

Limit

broadcast or multicast traffic overload will be dropped. This feature is not appropriate for networks that

 

require high levels of IPX or RIP broadcast traffic.

 

 

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