What are the different LACP modes?

Link Aggregation Control Protocol (LACP) has two Channel modes and they are “Active” and “Passive”.

How does LACP work Cisco?

LACP packets are exchanged only between ports in passive and active modes. The protocol “learns” the capabilities of LAN port groups dynamically and informs the other LAN ports. After LACP identifies correctly matched Ethernet links, it facilitates grouping the links into an EtherChannel.

What is LACP hot standby?

LACP allows for up to 16 ports to be configure to be part of a port channel but only 8 are active at any point in time and the others are in a hot standby state. When one port fails the switch will choose a replacement from the hot standby pool.

What is LACP protocol and how it works?

LACP provides a standard negotiation mechanism that a Huawei switch can use to create and enable the aggregated link based on its configuration. After an aggregated link is formed, LACP is responsible for maintaining the link. LACP adjusts the link if an aggregated link’s status changes.

Does LACP load balance?

LACP mode is also called M:N mode, where M refers to the number of active links and N refers to the number of backup links. This mode guarantees high reliability and allows traffic to be load balanced among M active links.

What is LACP mode in Cisco switch?

LACP allows Cisco switches to manage Ethernet channels between switches that conform the 802.3ad protocol. You can configure maximum 16 ports to form a channel depending on IOS version and platform. Eight of the ports are in active mode and the other eight are in hot-standby mode. There are few LACP modes: “active”, “passive” and “on”.

What is active and passive mode in LACP protocol?

The physical switch ports running LACP protocol can be either in active or passive mode. In active mode, the port actively tries to form LACP EtherChannel with remote switch port. Whereas, in passive mode, the port just waits for remote switch port to initiate LACP negotiation.

Do I have to run LACP as active/active?

You don’t have to run active/passive. There is no issue with running LACP as active/active. As a matter of fact, when you connect Nexus 2ks to 5ks or 7ks active/active should be configured. In active/passive active side negotiate and the passive side minimizes transmission of LACP packets (less noise).

How to configure link aggregation Control Protocol (LACP) in switch-a?

The switches are connected with two switch ports Fa0/1 and Fa0/2. We can bundle these two switch ports into one logical EtherChannel using Link Aggregation Control Protocol (LACP) protocol. The links between the switches are TRUNKS so we have to configure TRUNK in the LACP bundled port as well. Let’s start configuring LACP in Switch-A.