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XG2000 series User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2009
4.4.4 Notes on Link Aggregation
The smallest port number in an aggregation group serves as the master port.
Port settings established after defining an aggregation group inherit the same settings as those of the master port, with some
exceptions. The settings that are not inherited from the master port are.
z "link-pass-through"
Settings for these ports are cleared.
z The information registered in MAC address table
All addresses related to ports configured are cleared.
z "spanning-tree port-path-cost"
Port-path-cost will be re-adjusted to match the new configuration.
When changing the port settings for aggregation groups that have already been created, the aggregation group changes to a
linkdown state, and then to a linkup state if one of the following conditions are satisfied.
z A master port was removed
z A master port changed
z The "protocol" or "lacp-mode" parameter changed