Link Aggregation provides protocols, procedures, and managed objects that allow the following: One or more parallel instances of full-duplex point-to-point links to be aggregated together to form a Link Aggregation Group (LAG), such that a MAC Client can treat the LAG as if it were a single link. A resilient interconnect using multiple full-duplex point-to-point links among one to three nodes in a network and one to three nodes in another, separately administered, network, along with a means to ensure that frames belonging to any given service will use the same physical path in both directions between the two networks. This standard defines the MAC-independent Link Aggregation capability and general information relevant to specific MAC types that support Link Aggregation. The capabilities defined are compatible with previous versions of this standard.
Link Aggregation allows the establishment of full-duplex point-to-point links that have a higher aggregate bandwidth than the individual links that form the aggregation, and the use of multiple systems at each end of the aggregation. This allows improved utilization of available links in bridged local area network (LAN) environments, along with improved resilience in the face of failure of individual links or systems. In applications connecting separately administered networks, the networks are isolated from each other’s fault recovery events.
There is a need to correct and clarify Link Aggregation specifications and in particular the Distributed Resilient Network Interface specifications, in the light of implementation experience to ensure interoperability and ensure proper operation. Furthermore there is a need to correct some known problems identified in the maintenance process. The scope of these changes is most appropriately handled as a revision.
|Draft||P802.1AX-REV, Draft 0.3 (23 March 2018)|
|Status||Second Task Group ballot on draft 0.3
Prior drafts and dispositions of comments
|PAR||PAR approved 12 May 2016|
|Editors||Stephen Haddock, Jessy Rouyer|
Presentations and contributions
|19 May 2018|
|18 May 2018|
|11 May 2018|
|8 Mar 2018|
|25 Jan 2018|
|24 Jan 2018|
|9 Nov 2017|
|7 Sep 2017|
|13 Jul 2017||802.1AX — Link Aggregation: Editor’s Report: July 2017
|6 Jul 2017||The LACP MUX machine
|18 May 2017||802.1AX Link Aggregation: Conversation Sensitive Collection and Distribution (CSCD)
|17 May 2017||802.1AX Link Aggregation 802.1AX-Rev2-d0.1 Editor’s Report
|16 Mar 2017||Link Aggregation Simulator
|19 Jan 2017||Plans for next Editor’s draft
|11 Jan 2017||LACP Wait To Restore specification
|16 Mar 2016||Standard for Local and metropolitan area networks — Link Aggregation PAR
The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft (see filenames beginning “ax-” or “ax-rev” in the 2016, 2017 and 2018 802.1 public directories for a complete list). The dates listed are the website file dates and often differ from creation dates in the documents.