D-Link DES-3326 manual Master Port, Members, State Disabled, 242

DES-3326 Layer 3 Fast Ethernet Switch User’s Guide

aggregation group may not cross an 8-port boundary, starting with port 1 (a group may not contain ports 8 and 9, for example) and all of the ports in the group must be members of the same VLAN. Further, the aggregated links must all be of the same speed and should be configured as full duplex.

The configuration of the lowest numbered port in the group becomes the configuration for all of the ports in the aggregation group. This port is called the Master Port of the group, and all configuration options – including the VLAN configuration – that can be applied to the Master Port are applied to the entire link aggregation group.

Load balancing is automatically applied to the ports in the aggregated group, and a link failure within the group causes the network traffic to be directed to the remaining links in the group.

The Spanning Tree Protocol will treat a link aggregation group as a single link, on the switch level. On the port level, the STP will use the port parameters of the Master Port in the calculation of port cost and in determining the state of the link aggregation group. If two redundant link aggregation groups are configured on the switch, STP will block one entire group – in the same way STP will block a single port that has a redundant link.

The following fields can be set:

Parameter	Description
Master Port <1>	The Master port of link aggregation
	group.
Number	of Allows the entry of the number of
Members <2>	contiguous ports that will make up
	the link aggregation group. These
	ports will be in sequential order from
	the Master Port.
State <Disabled>	This field can be toggled between
	Enabled and Disabled. This is used
	to turn a link aggregation group on
	or off. This is useful for diagnostics,
	to quickly isolate a bandwidth
	intensive network device or to have
	an absolute backup link aggregation
	group that is not under automatic
	control.

Utilities

Layer 2 Switch Utilities

Trivial File Transfer Protocol (TFTP) services allow the switch firmware to be upgraded by transferring a new firmware file from a TFTP server to the switch. A configuration file can also be loaded into the switch from a TFTP server, switch settings can be saved to the TFTP server, and a history log can be uploaded from the switch to the TFTP server.

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