Quick Reference Guide

324 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Dynamic link aggregation
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Dynamic link aggregation
The device software supports the IEEE 802.3ad standard for link aggregation. This standard
describes the Link Aggregation Control Protocol (LACP), a mechanism for allowing ports on both
sides of a redundant link to form a trunk link (aggregate link), without the need for manual
configuration of the ports into trunk groups.
When you enable link aggregation on a group of ports, the ports can negotiate with the ports at the
remote ends of the links to establish trunk groups.
The link aggregation feature automates trunk configuration but can coexist with the trunk group
feature. Link aggregation parameters do not interfere with trunk group parameters.
NOTE
Use the link aggregation feature only if the device at the other end of the link you want to aggregate
also supports IEEE 802.3ad link aggregation. Otherwise, you need to manually configure the trunk
links.
Duplex The mode of the port, which can be one of the following:
• None – The link on the primary trunk port is down.
• Full – The primary port is running in full-duplex.
• Half – The primary port is running in half-duplex.
NOTE: This field and the following fields apply only to operational trunk groups.
Speed The speed set for the port. The value can be one of the following:
• None – The link on the primary trunk port is down.
• 10 – The port speed is 10 Mbps.
• 100 – The port speed is 100 Mbps.
• IG – The port speed is 1000 Mbps.
Tag Indicates whether the ports have 802.1Q VLAN tagging. The value can be Yes or No.
Priority Indicates the Quality of Service (QoS) priority of the ports. The priority can be a value
from 0 – 7.
Active Ports The number of ports in the trunk group that are currently active.
Ports The ports in the trunk group.
Link_Status The link status or each port in the trunk group.
LACP_Status For more information about this feature, refer to the section “Displaying and
determining the status of aggregate links” on page 335:
• Ready - The port is functioning normally in the trunk group and is able to transmit
and receive LACP packets.
• Expired - The time has expired (as determined by timeout values) and the port has
shut down because the port on the other side of the link has stopped transmitting
packets.
• Down - The port physical link is down.
Load Sharing The number of traffic flows currently being load balanced on the trunk ports. All traffic
exchanged within the flow is forwarded on the same trunk port. For information about
trunk load sharing, refer to “Trunk group load sharing” on page 314.
TABLE 45 CLI trunk group information (Continued)
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