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Differences in LACP support in vSphere Distributed Switch 5.5 and 5.1 (2051316)

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Purpose

This article lists the differences in Link Aggregation Control Protocol (LACP) support between vSphere 5.1 and vSphere 5.5 Distributed Switches.

Resolution

vSphere 5.1 introduced support for Link Aggregation Control Protocol (LACP) for Distributed Switches. vSphere 5.5 provides enhanced support for LACP and includes additional functionality that are not supported in vSphere 5.1.
 
This table lists the features and the corresponding support in vSphere 4.x, 5.0, 5.1, and 5.5:
Feature vSphere 4.x/5.0 vSphere 5.1 vSphere 5.5
LACP Support No Yes Yes
Multiple LAGs per uplink port group N/A No Yes
Multiple LACP load balancing algorithms N/A No Yes







vSphere 5.5 Distributed Switches support multiple link aggregation groups (LAGs) per uplink port group, whereas vSphere 5.1 supports only a single LAG. This provides improved flexibility and eliminates the need to have multiple distributed switches to support more than one LAG.

Note: A maximum of 64 LAGs can be created per Distributed Switch in vSphere 5.5. However, the underlying physical network infrastructure may impose additional limitations that limit the number of LAGs.

vSphere 5.5 Distributed Switches support all load balancing algorithms associated with LACP,where as vSphere 5.1 supports only the IP Hash load balancing algorithm.

For information on enabling enhanced LACP features, see Converting to Enhanced LACP Support on a vSphere Distributed Switch in the vSphere Web Client (2051311).

Additional Information

Though vSphere 5.5 supports enhanced LACP capabilities, the Distributed Switch must be upgraded to a version 5.5 to take advantage of these features. This requires that all ESXi hosts connected to the distributed switch are also upgraded to ESXi 5.5, which removes the backward compatibility with older versions.

See Also

Request a Product Feature

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