3com 5500 用户手册

1 In manual aggregation mode

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link-aggregation group 1 mode manual

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interface Ethernet1/0/1

port link-aggregation group 1

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interface Ethernet1/0/2

port link-aggregation group 1

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interface Ethernet1/0/3

port link-aggregation group 1

# 

2 In static LACP aggregation mode

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link-aggregation group 1 mode static

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interface Ethernet1/0/1

port link-aggregation group 1

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interface Ethernet1/0/2

port link-aggregation group 1

#

interface Ethernet1/0/3

port link-aggregation group 1

# 

3 In dynamic LACP aggregation mode

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interface Ethernet1/0/1

lacp enable

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interface Ethernet1/0/2

lacp enable

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interface Ethernet1/0/3

lacp enable

# 

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If static LACP aggregation or manual aggregation is adopted, you are 
recommended not to cross-connect the aggregation member ports at the two 
ends to avoid packet loss. For example, if local port 1 is connected to remote 
port 2, do not connect local port 2 to remote port 1.

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Dynamic LACP aggregation mode is not recommended in actual networking 
scenarios.

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The implementation of static aggregation varies by platform software version. 
This may result in problems when products using different platform software 
versions are interconnected through static aggregation groups. Use the 
display version command to view the platform software version.

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The Switch 4210 supports only the manual aggregation mode.