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Figure 6 Setting the aggregation state of a member port in a static aggregation group
After the limit on Selected ports is reached in a static aggregation group, new member ports in the
group are placed in the Unselected state. This mechanism prevents traffic interruption on the
existing Selected ports. However, a device reboot can cause the aggregation state of member ports
to change.
Any operational key or attribute configuration change might affect the aggregation states of link
aggregation member ports.
Aggregating links in dynamic mode
Dynamic aggregation is implemented through IEEE 802.3ad Link Aggregation Control Protocol
(LACP).
LACP
LACP uses LACPDUs to exchange aggregation information between LACP-enabled devices.
Each member port in an LACP-enabled aggregation group exchanges information with its peer.
When a member port receives an LACPDU, it compares the received information with information
received on the other member ports. In this way, the two systems reach an agreement on which ports
are placed in the Selected state.
Summary of Contents for H3C S7500E-X
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