Planet WSW-2401A [40/95] Link aggregation

to connect to other bridges. Under RSTP, all ports operating in full-duplex mode are considered to be P2P ports,

unless manually overridden through configuration.

The link type attached to this port could be selected as following:

。 Auto - The switch automatically determines if the interface is attached to a point-to-point link or to shared

media

。 True – A connection to exactly one other bridge.

。 False - A connection to two or more bridges.

Port Priority: Defines if this port is more or less likely to become the root port. The range is from 0 to 255, the

default setting is 128.The lower number has the highest priority.

Path Cost: Specifies the path cost of the port. The switch uses this parameter to help determine which port will

become a forwarding port. Lower numbers will be used as forwarding ports first. The range is from 0 to 65535. The

default values based on IEEE802.1D are: 10Mb/s = 50-600, 100Mb/s = 10-60, 1000Mb/s = 3-10

4.6.3 Link Aggregation

The Link Aggregation Control Protocol (LACP) provides a standardized means for exchanging information

between Partner Systems that require high speed redundant links. Link aggregation lets you group up to eight

consecutive ports into a single dedicated connection. This feature can expand bandwidth to a device on the

network. LACP operation requires full-duplex mode, more detail information refer to the IEEE 802.3ad standard.

Port link aggregations can be used to increase the bandwidth of a network connection or to ensure fault recovery.

Link aggregation lets you group up to 4 consecutive ports into a single dedicated connection between any two the

Switch or other Layer 2 switches. However, before making any physical connections between devices, use the

Link Aggregation Configuration menu to specify the link aggregation on the devices at both ends. When using a

port link aggregation, note that:

。 The ports used in a link aggregation must all be of the same media type (RJ-45, 100 Mbps fiber).

。 The ports that can be assigned to the same link aggregation have certain other restrictions (see below).

。 Ports can only be assigned to one link aggregation.

。 The ports at both ends of a connection must be configured as link aggregation ports.

。 None of the ports in a link aggregation can be configured as a mirror source port or a mirror target port.

。 All of the ports in a link aggregation have to be treated as a whole when moved from/to, added or deleted

from a VLAN.

。 The Spanning Tree Protocol will treat all the ports in a link aggregation as a whole.

。 Enable the link aggregation prior to connecting any cable between the switches to avoid creating a data

loop.