Allied Telesis AT-S62 - Manual (Page 129)

AT-S62 Menus Interface User’s Guide
Section I: Basic Operations 129
Load Distribution Methods
The load distribution method determines the manner in which the
switch distributes the traffic across the active ports of an aggregate
trunk. The method is assigned to an aggregator and applies to all
aggregate trunks within it. If you want to assign different load
distribution methods to different aggregate trunks, you must create a
separate aggregator for each trunk. For further information, refer to
Load Distribution Methods on page 130.
LACP Trunk Guidelines
Here are the guidelines to follow when creating aggregators:
❑ LACP must be activated on both the switch and the other device.
❑ The other device must be 802.3ad-compliant.
❑ An aggregator can consist of any number of ports.
❑ The AT-8500 Series switch supports up to eight active ports in an
aggregate trunk at a time.
❑ The switch supports a maximum of three aggregate trunks.
❑ The ports of an aggregate trunk must be of the same medium
type. They can be all twisted pair ports or all fiber optic ports.
❑ The ports of a trunk can be consecutive (for example Ports 5-9) or
nonconsecutive (for example, Ports 4, 8, 11, 20).
❑ A port can belong to only one aggregator at a time.
❑ A port cannot be a member of an aggregator and a static trunk at
the same time.
❑ The ports of an aggregate trunk must be untagged members of
the same VLAN. (The switch’s management software does not
display an error message if you create an aggregator with ports
from different untagged VLANs. However, the ports are not added
to the aggregate trunk when the trunk is established.)
❑ 10/100Base-TX twisted pair ports must be set to Auto-Negotiation
or 100 Mbps, full-duplex mode. LACP trunking is not supported in
half-duplex mode.
❑ 100Base-FX fiber optic ports must be set to full-duplex mode.
❑ You can create an aggregate trunk of expansion modules or GBIC
modules with 1000Base-X fiber optic ports.