R0106-HP MSR Router Series Layer 2 - LAN Switching Configuration Guide(V7)

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Figure 2 Setting the aggregation state of a member port in a static aggregation group
To ensure stable aggregation state and service continuity, do not change the operational key or attribute
configurations on any member port. If you need to make this change, make sure you understand its
impact on the live network. Any operational key or attribute configuration change might affect the
aggregation state of link aggregation member ports and ongoing traffic.
Aggregating links in dynamic mode
Dynamic aggregation mode 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
Selected state.