Configure the LAG on each of the two devices.Make sure that both devices support link aggregation.To set up link aggregation between two devices in your network: To find your product’s support page, visit and enter your product model number in the search box. For more information about setting up link aggregation on specific NETGEAR devices, see the NETGEAR product support page for your product. The following instructions describe in general terms how to set up link aggregation between two devices in your network. How do I set up link aggregation in my network? We recommend using LACP instead of a static LAG whenever both devices support LACP. This helps to minimize packet loss.īoth devices must support LACP for you to set up a dynamic LAG between those devices. If the devices detect that they cannot establish a link aggregation connection, they do not try to establish it, and the link shows as “down” in the admin interface.Īnother useful feature of LACP is that when one member link stops sending LACPDUs (if the cable is unplugged, for example), it is removed from the LAG. You still need to configure the LAG on each device, but LACP helps prevent one of the most common problems that can occur during the process of setting up link aggregation: misconfigured LAG settings. LACP lets devices send Link Aggregation Control Protocol Data Units (LACPDUs) to each other to establish a link aggregation connection. Link Aggregation Control Protocol is an IEEE standard defined in IEEE 802.3ad. What is Link Aggregation Control Protocol (LACP)? Linux-based devices, such as NETGEAR ReadyNAS storage devices, often offer several additional types of link aggregation that provide increased fault tolerance or load balancing instead of increased bandwidth. Refer to your product’s user manual to see whether your device supports LACP. Some devices support static LAGs, but do not support dynamic LAGs with LACP. Dynamic LAGs use Link Aggregation Control Protocol (LACP) to negotiate settings between the two connected devices. The two primary types of LAGs are static (also known as manual) and dynamic. Link aggregation increases bandwidth without requiring new equipment. A physical network upgrade can be expensive, especially if it requires new cable runs. The aggregated physical links deliver higher bandwidth than each individual link. Traffic can be load-balanced across the physical links. If one of the physical links in the LAG goes down, traffic is dynamically and transparently reassigned to one of the other physical links. Increased reliability and availability.Link aggregation offers the following benefits: What are the benefits of link aggregation? Unmanaged switches do not support link aggregation. Some network devices support Link Aggregation Control Protocol (LACP), which helps to prevent errors in the link aggregation setup process. You can also configure more than one LAG on the same switch, or add more than two Ethernet links to the same LAG (the maximum number of links per LAG depends on your device). For example, you can include a LAG in a virtual local area network (VLAN). Network devices and management functions treat the link aggregation group (LAG) of multiple Ethernet connections as a single link. The most common device combinations involve connecting a switch to another switch, a server, a network attached storage (NAS) device, or a multi-port access point.
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