Link Aggregation Modes - HP 1910 User Manual

Class-two configurations
The contents of class-two configurations are listed in
different from the aggregate interface in the class-two configurations cannot be a Selected port.
Table 65 Class-two configurations
Type
Port isolation
VLAN
MAC address learning
NOTE:
• Some configurations are called class-one configurations. Such configurations, for example, MSTP, can
be configured on aggregate interfaces and member ports but are not considered during operational
key calculation.
The change of a class-two configuration setting may affect the select state of link aggregation member
•
ports and the ongoing service. To prevent unconsidered change, a message warning of the hazard will
be displayed when you attempt to change a class-two setting, upon which you can decide whether to
continue your change operation.

Link aggregation modes

Depending on the link aggregation procedure, link aggregation operates in one of the following modes:
Static aggregation mode
•
Dynamic aggregation mode
•
Static aggregation mode
LACP is disabled on the member ports in a static aggregation group. In a static aggregation group, the
system sets a port to Selected or Unselected state by the following rules:
Select a port as the reference port from the ports that are in up state and with the same class-two
•
configurations as the corresponding aggregate interface. These ports are selected in the order of
full duplex/high speed, full duplex/low speed, half duplex/high speed, and half duplex/low
speed, with full duplex/high speed being the most preferred. If two ports with the same duplex
mode/speed pair are present, the one with the lower port number wins.
• Consider the ports in up state with the same port attributes and class-two configurations as the
reference port as candidate selected ports, and set all others in Unselected state.
Static aggregation limits the number of Selected ports in an aggregation group. When the number
•
of the candidate selected ports is under the limit, all the candidate selected ports become Selected
ports. When the limit is exceeded, set the candidate selected ports with smaller port numbers in
Selected state and those with greater port numbers in Unselected state.
• If all the member ports are down, set their states to Unselected.
Set the ports that cannot aggregate with the reference port to the Unselected state, for example, as
•
a result of the inter-board aggregation restriction.
Considerations
Whether a port has joined an isolation group, and the isolation group that the port
belongs to
Permitted VLAN IDs, default VLAN, link type (trunk, hybrid, or access), IP
subnet-based VLAN configuration, protocol-based VLAN configuration, tag mode
MAC address learning capability, MAC address learning limit, forwarding of frames
with unknown destination MAC addresses after the upper limit of the MAC address
table is reached
171
Table 65. In an aggregation group, a member port