Link Aggregation Modes; Aggregating Links In Static Mode; Choosing A Reference Port; Setting The Aggregation State Of Each Member Port - H3C S7500E-X Configuration Manual

Link aggregation modes

An aggregation group operates in one of the following modes:
•
Static—Static aggregation is stable. An aggregation group in static mode is called a static
aggregation group. The aggregation states of the member ports in a static aggregation group
are not affected by the peer ports.
•
Dynamic—An aggregation group in dynamic mode is called a dynamic aggregation group. The
local system and the peer system automatically maintain the aggregation states of the member
ports, which reduces the administrators' workload.

Aggregating links in static mode

Choosing a reference port

When setting the aggregation states of the ports in an aggregation group, the system automatically
chooses a member port as the reference port. A Selected port must have the same operational key
and attribute configurations as the reference port.
The system chooses a reference port from the member ports that are in up state and have the same
attribute configurations as the aggregate interface.
The candidate ports are sorted in the following order:
Highest port priority
1.
Full duplex/high speed
2.
Full duplex/low speed
3.
Half duplex/high speed
4.
Half duplex/low speed
5.
The candidate port at the top is chosen as the reference port.
•
If multiple ports have the same port priority, duplex mode, and speed, the port that has been a
Selected port (if any) is chosen. If multiple ports have been Selected ports, the one with the
smallest port number is chosen.
•
If multiple ports have the same port priority, duplex mode, and speed and none of them has
been a Selected port, the port with the smallest port number is chosen.

Setting the aggregation state of each member port

After the reference port is chosen, the system sets the aggregation state of each member port in the
static aggregation group.
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