Operation Manual – Link Aggregation
H3C S9500 Series Routing Switches
Chapter 1 Link Aggregation Overview
1-3
Category
Considerations
QinQ
z
State of QinQ (enabled or disabled)
z
Added outer VLAN tag
BPDU tunnel
z
BPDU tunnel state on ports (enabled or disabled)
z
BPDU tunnel state for STP on ports (enabled or disabled)
VLAN
z
VLANs permitted to pass through the port
z
Default VLAN ID of the port
z
Link type of the port, which can be trunk, hybrid, or access
z
Protocol VLAN configuration
z
Whether packets of a VLAN carry the VLAN tag
Port attribute
z
Port rate
z
Duplex mode
z
Up/down state of the link
z
Isolation group membership of the port
MAC
address
learning
z
MAC address learning capability
z
Setting of maximum number of MAC addresses that can be
learned on the port
z
Forwarding of frames with unknown destination MAC addresses
after the upper limit of the MAC address table is reached
1.2 Approaches to Link Aggregation
Two ways are available for implementing link aggregation, as described in
Manual Link
Aggregation
, and
Static LACP link aggregation
.
1.2.1 Manual Link Aggregation
I. Overview
You can configure manual link aggregation by manually assigning ports to a
LACP-disabled aggregation group. LACP is disabled on all ports in a manual
aggregation group.
II. Port states in a manual aggregation group
In a manual aggregation group, ports are either selected or unselected. Selected ports
can receive and transmit data frames whereas unselected ones cannot. Among all
selected ports, the one with the lowest port number is the master port and others are
member ports.
When setting the state of ports in a manual aggregation group, the system considers
the following:
z
Select a port from the ports in up state, if any, in the order of full duplex/high speed,
full duplex/low speed, half duplex/high speed, and half duplex/low speed, with the
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 out. Then,
