Multilink Trunking With Lacp; Ieee 802.3Ad Overview - Avaya 8600 Configuration Manual

Link aggregation fundamentals
• Ports in a LAG can exist on different modules.
• Support a maximum of 128 link aggregation groups.
• A LAG can be configured with up to 16 ports (8 active and 8 standby ports). Even if you
have less than 16 ports configured, you still cannot have an aggregation group with more
than 8 active (or 8 standby ) ports at any one time.
• After a MultiLink trunk is configured with LACP, you cannot add or delete ports manually
without first disabling LACP.

MultiLink Trunking with LACP

MultiLink Trunking (MLT) with Link Aggregation Control Protocol (LACP) manages switch ports
and port memberships to form a link aggregation group (LAG). LACP allows you to gather one
or more links to form a LAG, which a Media Access Control (MAC) client treats as a single link.
LACP can dynamically add or remove LAG ports, depending on availability and state.

IEEE 802.3ad overview

The IEEE 802.3ad standard comprises service interfaces, the LACP, the Marker Protocol, link
aggregation selection logic, a parser/multiplexer, frame distribution, and frame collection
functions.
Figure 4: Link aggregation sublayer (according to IEEE 802.3ad)
functions of IEEE 802.3ad defined as multiple link aggregation.
20 Configuration — Link Aggregation, MLT, and SMLT
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on page 21shows the major
January 2012