User Manual

Table Of Contents
79
III-5-5. L2 SWITCHING PORT TRUNK
Port Trunk is also known as Link Aggregation, and it is a protocol to group links to a trunk. A total of 8
trunk groups are provided. It is a good method to reach load balance and link backup. For example,
when port 1 to port 4 are combined to trunk 1 and all ports support 100Tx and set to full-duplex, the
bandwidth of the trunk will be 800Mbps. The traffic transmitting on the trunk is distributed to one of
the link by the source MAC address to reach the load balance. When the trunk mode is set to LACP and
when one of the link is broken, the traffic will transmit on another link on the group.
Configure Port Trunk Information
Group
Eight trunk groups from Trunk 1 to Trunk 8 are supported.
Trunking Mode
Two trunking modes are available: “LACP” and “Static”.
Static: The traffic is transmitted on one of the links in the group. The link is determined by the MAC
Address in the frame header. If the link is broken, the traffic cannot transmit on the other links in
the group.
LACP: It is also known as “Dynamic” trunking. If the current transmitting link is broken, the traffic
can be transmitted on another link in the group.