What are link aggregation groups?

A link aggregation group (LAG) is a logical interface that uses the Link Aggregation Control Protocol (LACP) to aggregate multiple connections at a single AWS Direct Connect endpoint, allowing you to treat them as a single, managed connection.

How many link aggregation groups are there?

You can put a maximum of eight individual links in a LAG group, although some devices will restrict you to a smaller number.

What is a requirement for link aggregation?

All the datalinks in the aggregation must run at the same speed and in full-duplex mode. For DLMP aggregations, you must have at least one switch to connect the aggregation to the ports in the other systems. You cannot use a back-to-back setup when configuring DLMP aggregations.

What is the purpose of link aggregation?

Link aggregation allows you to combine multiple Ethernet links into a single logical link between two networked devices. Link aggregation is sometimes called by other names: Ethernet bonding.

What is dynamic link aggregation?

IEEE 802.3ad Dynamic link aggregation (802.3ad, LACP) Creates aggregation groups that share the same speed and duplex settings. Utilizes all slave network interfaces in the active aggregator group according to the 802.3ad specification.

Which two protocols are link aggregation protocols?

Both LACP and PAGP protocols are used for link aggregation. They are aimed at bundling the links and balancing traffic across the member links to provide aggregated throughput. PAGP provides the same negotiation benefits as LACP. Both LACP and PAGP packets are exchanged between switches over Etherchannel capable ports.

What is static link aggregation?

Static link aggregation is a method of combining or bundling of multiple switch ports or nics to form a single etherchannel. It increases throughput and redundancy for the two connecting devices. A static link aggregation means that you manually configure the links you wish to use as part of your etherchannel.

What is static link aggregation lag?

Link Aggregation Control Protocol (LACP) is part of the IEEE specification (802.3az) that enables you to bundle several physical ports together to form a single logical channel (LAG). A LAG is static if LACP is disabled on it. The group of ports assigned to a static LAG are always active members.

What is a link aggregation group identifier (lag)?

A globally unique local system identifier An identifier (operational key) for the bundle of which the link is a member An identifier (port ID) for the link The current aggregation status of the link This information is used to form the link aggregation group identifier (LAG ID). Links that share a common LAG ID can be aggregated.

What is linklink aggregation and how does it work?

Link aggregation is a way of bundling a bunch of individual (Ethernet) links together so they act like a single logical link. If you have a switch with a whole lot of Gigabit Ethernet ports, you can connect all of them to another device that also has a bunch of ports and balance the traffic among these links to improve performance.

How does link aggregation Control Protocol (LACP) work?

The active monitoring protocol that allows devices to include or remove individual links from the LAG is called Link Aggregation Control Protocol (LACP). So how does link aggregation work? The first important thing to know is that all links in a LAG must be a type of Ethernet (10/100/1000/10G, etc) and they must all be identical.

What is the IEEE standard for link aggregation?

The official IEEE standard for link aggregation used to be called 802.3ad, but is now 802.1AX, as I will explain later. However, several vendors have also developed their own proprietary variants.