3com 8807 Guia Do Utilizador

C

HAPTER

 14: L

INK

 A

GGREGATION

 C

ONFIGURATION

aggregation port is the same as the aggregation group ID. In a dynamic 
aggregation group, the member ports must have the same operation key. In 
manual and static aggregation groups, the active ports have the same operation 
key.

Port aggregation can be divided into manual aggregation, dynamic LACP 
aggregation and static LACP aggregation.

Both manual aggregation and static LACP aggregation are configured manually, 
and cannot be added or removed automatically by the system. A manual or static 
LACP aggregation group must contain a member port at least. In the case of one 
port in an aggregation group, the unique method for you to remove the port from 
the aggregation group is to delete the aggregation group. By default, the system 
disables the LACP for the manual aggregation port. You are prohibited to enable 
the LACP for the manual aggregation port. By default, the system enables the 
LACP for the static aggregation port. When a static aggregation group is removed, 
the member ports will form one or more dynamic LACP aggregation groups with 
LACP enabled. You are prohibited to disable the LACP for the static aggregation 
port.

In manual and static aggregation groups, ports can be in active or inactive state. 
The port in active state can transmit and receive user service packets, but the port 
in inactive state cannot. The active port with the minimum port number serves as 
the master port, while others as slave ports.

In a manual aggregation group, the system sets the ports to active or inactive state 
based on these rules:

■

Based on the descending order of priority levels from full duplex/high speed, to 
full duplex/low-speed, to half duplex/high speed and till half duplex/low speed, 
the system sets the port with the highest priority to active state, and others to 
inactive state.

■

The system sets to inactive state the ports which cannot aggregate with the 
master port, due to hardware limit (such as trans-module aggregation is 
forbidden).

■

The system sets to inactive state the ports with basic configurations different 
from the active port.

In a static aggregation group, the system sets the ports to active or inactive state 
based on these rules:

■

Based on the descending order of priority levels from full duplex/high speed, to 
full duplex/low-speed, to half duplex/high speed and till half duplex/low speed, 
the system sets the port with the highest priority to active state, and others to 
inactive state.

■

The system sets to inactive state the active port connecting to the different 
peer devices, or the port connecting to the same peer device but locating in the 
different aggregation group.